Re: [OT] Request an app test (free beer!)
Subir Sengupta wrote:
mandrake 10.1
Linux
RH Linux v9:
Linux
-Original Message-
From: Frank W. Zammetti [mailto:[EMAIL PROTECTED]
Sent: Monday, December 20, 2004 2:26 PM
To: Commons User; Struts User; Tomcat User
Subject: [OT] Request an app test (free beer!)
I was informed last OT post I made that the subject should always
include the word "beer". I added the "free" to get your attention :)
I'm working on something for which I need to know what the os.name
property on various OS's is. I would greatly appreciate it if some
folks could try the following:
public class test {
public static void main(String[] args) {
System.out.println(System.getProperty("os.name"));
}
}
I'm particularly interested in various *nix variants, Linux, Mac and
such. Windows I already have answers for (although some verification to
be sure nothing fishy is going on wouldn't hurt).
If you could just post your OS and what the result was, I would greatly
appreciate it. Thanks in advance!
-
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[OT] Java developer friendly Linux distro
Hi all, Which distro (free) is most friendly for Java development. I need J2SE 1.4.2 to work on it plus Eclipse 3.x(Linux dont have a good text editor in which I can run Ant builds). I also need a good GUI so that others will be attracted to it. rgds Antony Paul - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: [OT] Java developer friendly Linux distro
I would recommend Mandrake then, or Fedora Core I run Eclipse on both, with great success. /Søren -Original Message- From: Antony Paul [mailto:[EMAIL PROTECTED] Sent: 21. december 2004 10:10 To: Tomcat Users List Subject: [OT] Java developer friendly Linux distro Hi all, Which distro (free) is most friendly for Java development. I need J2SE 1.4.2 to work on it plus Eclipse 3.x(Linux dont have a good text editor in which I can run Ant builds). I also need a good GUI so that others will be attracted to it. rgds Antony Paul - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Adding withOUT server restart?
HEy Robert, I think you have also a jk2.properties at conf dir with channelSocket.port=8009 ! You are right you can also use the jk2.properties, but I preferred the direct server.xml configuration (Default 5.5). The example configured the RMI JMX Adaptor: mx.enabled=true mx.jrmpPort=1099 mx.jrmpHost=localhost This RMI Adaptor is only included at MX4J 1.1.1 and deprecated for MX4j 2.x. Only chance to get this adaptor to work, is compiling the complete mx4j 2.x or get a old mx4j release. The MX4J Http JMX Adaptor can be configured with: (delete conf(jk2.properties) Regards Peter Robert Hunt schrieb: Peter, I added the mx4j-tools.jar to the classpath and node as noted. I had to add 'port="9050"' to the node to skew it away from the 8009 default. But now I'm stuck; what front-end should be used? You instructions conflict with what's found here: http://mc4j.sourceforge.net/usageTomcat.html - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] Java developer friendly Linux distro
Hi! Linux dont have a good text editor in which I can run Ant builds That's where you are wrong my friend. Try jEdit from www.jedit.org. It is made in Java and runs on any platform, and it has several plugins capable of running Ant builds. A great editor in my opinion. Trond - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] Java developer friendly Linux distro
Trond G. Ziarkowski wrote: Hi! Linux dont have a good text editor in which I can run Ant builds That's where you are wrong my friend. Try jEdit from www.jedit.org. It is made in Java and runs on any platform, and it has several plugins capable of running Ant builds. A great editor in my opinion. Trond - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] i agree, jedit = :-) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
performance issue with JK und IIS6
Hi, We have a strange performance issue with Tomcat 4.1.30, JK1, IIS6 (Windows 2003 Server). I placed a big file (20 MB) into a Tomcat web-app root and downloaded it on some clients with "save link as". On certain clients the download rate is about 50 KB/s if the file is accessed via IIS and the JK connector, although there is a 100 MB network connection. If these clients download the file directly from IIS root, it's fast. On other clients the download is fast for both access methods. The client OSs are Windows 2000 and XP. I also tried to use a new JK connector (1.2.6). Do you have any ideas? Michael - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Admin for TC 5.5.4 on Linux SUSE 9
Hi, Admin is broken in 5.5.4. Download a later version of Tomcat for a fix. You may even be able to get the 5.5.6 version going in 5.5.4, but may be worth just getting 5.5.6 Allistair. > -Original Message- > From: Lars Ohlén [mailto:[EMAIL PROTECTED] > Sent: 18 December 2004 18:45 > To: [EMAIL PROTECTED] > Subject: Admin for TC 5.5.4 on Linux SUSE 9 > > > Hi, > > The Admin application behavious strange for TC 5.5.4 (or > perhaps my browsers) > > I cannot expand or fold any of the leavs in the left hand pane. > > I'm not sure if this is a JavaScript problem or on the server side. > > Any ideas? > > /Lars > > > > > > --- QAS Ltd. Developers of QuickAddress Software http://www.qas.com";>www.qas.com Registered in England: No 2582055 Registered in Australia: No 082 851 474 --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
performance issue with JK und IIS6
Hi, I found this link which confirms a IIS6 problem for ISAPI filters that use the WriteClient API. http://support.microsoft.com/default.aspx?scid=kb;EN-US;840875 Does this apply to the JK connector? The workarounds described there show no difference for us, however. Michael - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: performance issue with JK und IIS6
Michael Südkamp wrote: I found this link which confirms a IIS6 problem for ISAPI filters that use the WriteClient API. http://support.microsoft.com/default.aspx?scid=kb;EN-US;840875 You just must love Microsoft engineers just for that statement. One has to make something like that, and then dare to say it's a better product then before :). Does this apply to the JK connector? Frankly have no idea! You a using IIS5 compatibility mode correct? Mladen. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: performance issue with JK und IIS6
Check the archives. There was a similar issue less than a couple of month ago. I think it involved a problem with ack. Doug - Original Message - From: "Michael Südkamp" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, December 21, 2004 5:32 AM Subject: performance issue with JK und IIS6 Hi, We have a strange performance issue with Tomcat 4.1.30, JK1, IIS6 (Windows 2003 Server). I placed a big file (20 MB) into a Tomcat web-app root and downloaded it on some clients with "save link as". On certain clients the download rate is about 50 KB/s if the file is accessed via IIS and the JK connector, although there is a 100 MB network connection. If these clients download the file directly from IIS root, it's fast. On other clients the download is fast for both access methods. The client OSs are Windows 2000 and XP. I also tried to use a new JK connector (1.2.6). Do you have any ideas? Michael - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat/JVM crashes on Linux
Well, turns out the RAM is fine in the server. Our hosting provider tested it last night and said it checked out fine. Is there any other reason that the JVM/Tomcat would just exit like this? Could System.exit() be called somewhere? Isn't there a way to prevent System.exit() from being called? I know I'm grasping at straws, but what else is there to do in this situation? Greg On Dec 20, 2004, at 1:57 PM, Eric Rotick wrote: I had a similar problem with an almost identical setup to yours which turned out to be bad memory. An extra 1GB stick was added which had a bad section in the top of the memory map. This memory only got used when things got busy so everyone suspected some threading issue. We got lucky and spotted something totally absurd in the logs which prompted a memtest86 run and hey presto we got our answer. On Mon, 20 Dec 2004 13:28:56 -0500, Wade Chandler <[EMAIL PROTECTED]> wrote: Greg Lappen wrote: Hello- Has anyone had a problem with Tomcat 5.0.28 crashing on Linux with no error messages? My production server running with JDK 1.4.2_06, RedHat EL 3.0 just crashes, no core dump, no errors in catalina.out, no clues. Sometimes it goes for days, sometimes it happens several times in one day. I am running the tomcat process behind Apache 2 with mod_proxy. Setting "ulimit -c unlimited" in the catalina.sh startup file still did not produce a core file. If nobody else has experienced this, do you have any suggestions on how to debug it further? Thanks, Greg - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I'm using the same setup as you less Apache2. I use tomcat as the web server. Using TC5.0.28 and JDK1.4.2_06, and I have yet to have the server crash once. Not much help, but might give you some clues where to look. Connector log (mod_proxyassuming you mean you're using the new connector code)is there anything in the Apache2 log? I assume from your post you mean that the java process just completely goes away. You might find (depending on the running directory of the java process running tomcat) a pid dump log file or something...not sure if the vm produces one of these or not. You also might check in /var/log/messages file to see if for some reason the kernel or some lib got some error it logged. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
FORM based authentication config
Hi I'm having trouble getting form based authentication to work. Any help much appreciated. I'm missing something simple I'm sure. (TC 5.0.19, W2K, Mysql4) I am using a JDBC Realm which works fine with BASIC auth. After changing to FORM and try http://127.0.0.1:8080/MyApp/security/protected/login.jsp I get: The requested resource (/MyApp/security/protected/login.jsp) is not available. To set this up I copied the files from the JSP examples - login.jsp, error.jsp in folders \security\protected to \MyApp\security\protected\ I copied web.xml parts: org.apache.jsp.security.protected_.error_jsp org.apache.jsp.security.protected_.error_jsp org.apache.jsp.security.protected_.index_jsp org.apache.jsp.security.protected_.index_jsp org.apache.jsp.security.protected_.login_jsp org.apache.jsp.security.protected_.login_jsp and mappings org.apache.jsp.security.protected_.error_jsp /security/protected/error.jsp org.apache.jsp.security.protected_.index_jsp /security/protected/index.jsp org.apache.jsp.security.protected_.login_jsp /security/protected/login.jsp with Calendar /Calendar user admin sysadmin and configured FORM MyApp /security/protected/login.jsp /security/protected/error.jsp Chris
Re: Tomcat/JVM crashes on Linux
I've not tried this myself but you could add a Runtime.addShutdownHook and get it to print out anything which will give you a clue. On Tue, 21 Dec 2004 08:47:49 -0500, Greg Lappen <[EMAIL PROTECTED]> wrote: > Well, turns out the RAM is fine in the server. Our hosting provider > tested it last night and said it checked out fine. Is there any other > reason that the JVM/Tomcat would just exit like this? Could > System.exit() be called somewhere? Isn't there a way to prevent > System.exit() from being called? I know I'm grasping at straws, but > what else is there to do in this situation? > > Greg > On Dec 20, 2004, at 1:57 PM, Eric Rotick wrote: > > > I had a similar problem with an almost identical setup to yours which > > turned out to be bad memory. An extra 1GB stick was added which had a > > bad section in the top of the memory map. This memory only got used > > when things got busy so everyone suspected some threading issue. We > > got lucky and spotted something totally absurd in the logs which > > prompted a memtest86 run and hey presto we got our answer. > > > > > > On Mon, 20 Dec 2004 13:28:56 -0500, Wade Chandler > > <[EMAIL PROTECTED]> wrote: > >> Greg Lappen wrote: > >>> Hello- > >>> > >>> Has anyone had a problem with Tomcat 5.0.28 crashing on Linux with no > >>> error messages? > >>> > >>> My production server running with JDK 1.4.2_06, RedHat EL 3.0 just > >>> crashes, no core dump, no errors in catalina.out, no clues. > >>> Sometimes > >>> it goes for days, sometimes it happens several times in one day. I > >>> am > >>> running the tomcat process behind Apache 2 with mod_proxy. Setting > >>> "ulimit -c unlimited" in the catalina.sh startup file still did not > >>> produce a core file. > >>> > >>> If nobody else has experienced this, do you have any suggestions on > >>> how > >>> to debug it further? > >>> > >>> Thanks, > >>> > >>> Greg > >>> > >>> > >>> - > >>> To unsubscribe, e-mail: [EMAIL PROTECTED] > >>> For additional commands, e-mail: [EMAIL PROTECTED] > >>> > >>> > >>> > >> > >> I'm using the same setup as you less Apache2. I use tomcat as the web > >> server. Using TC5.0.28 and JDK1.4.2_06, and I have yet to have the > >> server crash once. Not much help, but might give you some clues where > >> to look. > >> > >> Connector log (mod_proxyassuming you mean you're using the new > >> connector code)is there anything in the Apache2 log? I assume > >> from > >> your post you mean that the java process just completely goes away. > >> You > >> might find (depending on the running directory of the java process > >> running tomcat) a pid dump log file or something...not sure if the vm > >> produces one of these or not. You also might check in > >> /var/log/messages > >> file to see if for some reason the kernel or some lib got some error > >> it > >> logged. > >> > >> Wade > >> > >> > >> - > >> To unsubscribe, e-mail: [EMAIL PROTECTED] > >> For additional commands, e-mail: [EMAIL PROTECTED] > >> > >> > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: FORM based authentication config
Hi, see this this might help you http://www.webservertalk.com/message633890.html cheers Manish -Original Message- From: Chris Chappell [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 21, 2004 7:45 PM To: Tomcat Users List Subject: FORM based authentication config Hi I'm having trouble getting form based authentication to work. Any help much appreciated. I'm missing something simple I'm sure. (TC 5.0.19, W2K, Mysql4) I am using a JDBC Realm which works fine with BASIC auth. After changing to FORM and try http://127.0.0.1:8080/MyApp/security/protected/login.jsp I get: The requested resource (/MyApp/security/protected/login.jsp) is not available. To set this up I copied the files from the JSP examples - login.jsp, error.jsp in folders \security\protected to \MyApp\security\protected\ I copied web.xml parts: org.apache.jsp.security.protected_.error_jsp org.apache.jsp.security.protected_.error_jsp org.apache.jsp.security.protected_.index_jsp org.apache.jsp.security.protected_.index_jsp org.apache.jsp.security.protected_.login_jsp org.apache.jsp.security.protected_.login_jsp and mappings org.apache.jsp.security.protected_.error_jsp /security/protected/error.jsp org.apache.jsp.security.protected_.index_jsp /security/protected/index.jsp org.apache.jsp.security.protected_.login_jsp /security/protected/login.jsp with Calendar /Calendar user admin sysadmin and configured FORM MyApp /security/protected/login.jsp /security/protected/error.jsp Chris *** Information contained in this email message is intended only for use of the individual or entity named above. If the reader of this message is not the intended recipient, or the employee or agent responsible to deliver it to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please immediately notify the [EMAIL PROTECTED] and destroy the original message. ** - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: filterStart error on Tomcat but not on Sun 8
QM wrote: As no one else has jumped on this yet, I'll take a stab at it: Thank you. 1/ any reason you're running 5.0.30? Unless I've missed a list post (a possibility) that's still in beta. Because I had the same error under 5.0.19 and figured I get the latest. 2/ could you crank up the log verbosity to see what else is going on as the filter's being loaded? What if the filter's init() method is throwing an exception/error/etc? How do I crank up the verbosity level. 3/ identical environments, other than the OS difference? i.e. same classpath and JAR versions all around, same JDK version, same Tomcat, same webapp version, etc? No. Not an os difference at all. Oh, I see people might have assumed Sun 8 as Solaris 8. Sheesh. I should have specified the Sun Application Server version 8 (8.01). Both, the Sun Appserver (which uses embedded Tomcat!) and Tomcat are running on WinXP SP1. ALL the settings are the same, launched from the same IDE. -QM Thanks again. -nat - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat/JVM crashes on Linux
That's a good idea, I'm going to try that. Its a cheap way to confirm or deny my suspicions. Thanks! On Dec 21, 2004, at 9:20 AM, Eric Rotick wrote: I've not tried this myself but you could add a Runtime.addShutdownHook and get it to print out anything which will give you a clue. On Tue, 21 Dec 2004 08:47:49 -0500, Greg Lappen <[EMAIL PROTECTED]> wrote: Well, turns out the RAM is fine in the server. Our hosting provider tested it last night and said it checked out fine. Is there any other reason that the JVM/Tomcat would just exit like this? Could System.exit() be called somewhere? Isn't there a way to prevent System.exit() from being called? I know I'm grasping at straws, but what else is there to do in this situation? Greg On Dec 20, 2004, at 1:57 PM, Eric Rotick wrote: I had a similar problem with an almost identical setup to yours which turned out to be bad memory. An extra 1GB stick was added which had a bad section in the top of the memory map. This memory only got used when things got busy so everyone suspected some threading issue. We got lucky and spotted something totally absurd in the logs which prompted a memtest86 run and hey presto we got our answer. On Mon, 20 Dec 2004 13:28:56 -0500, Wade Chandler <[EMAIL PROTECTED]> wrote: Greg Lappen wrote: Hello- Has anyone had a problem with Tomcat 5.0.28 crashing on Linux with no error messages? My production server running with JDK 1.4.2_06, RedHat EL 3.0 just crashes, no core dump, no errors in catalina.out, no clues. Sometimes it goes for days, sometimes it happens several times in one day. I am running the tomcat process behind Apache 2 with mod_proxy. Setting "ulimit -c unlimited" in the catalina.sh startup file still did not produce a core file. If nobody else has experienced this, do you have any suggestions on how to debug it further? Thanks, Greg --- -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I'm using the same setup as you less Apache2. I use tomcat as the web server. Using TC5.0.28 and JDK1.4.2_06, and I have yet to have the server crash once. Not much help, but might give you some clues where to look. Connector log (mod_proxyassuming you mean you're using the new connector code)is there anything in the Apache2 log? I assume from your post you mean that the java process just completely goes away. You might find (depending on the running directory of the java process running tomcat) a pid dump log file or something...not sure if the vm produces one of these or not. You also might check in /var/log/messages file to see if for some reason the kernel or some lib got some error it logged. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] Java developer friendly Linux distro
Antony Paul wrote: Hi all, Which distro (free) is most friendly for Java development. I need J2SE 1.4.2 to work on it plus Eclipse 3.x(Linux dont have a good text editor in which I can run Ant builds). I use JEDIT for quick simple editing of files, and Eclipse for the real stuff. A great combination. I would not advise using JEDIT instead of Eclipse but I don't want to start a war now. Although I am currently using Fedora Core 2, I am looking to upgrade, and the folks in various Linux/Unix newsgroups are pushing me towards the new Solaris 10, free from Sun. (My main Eclipse work though, for now, is still on a WinXP machine.) fwiw, -nat - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat/JVM crashes on Linux
I'd be interested to know the outcome of this one when you crack it. On Tue, 21 Dec 2004 09:32:42 -0500, Greg Lappen <[EMAIL PROTECTED]> wrote: > That's a good idea, I'm going to try that. Its a cheap way to confirm > or deny my suspicions. > > Thanks! > On Dec 21, 2004, at 9:20 AM, Eric Rotick wrote: > > > I've not tried this myself but you could add a Runtime.addShutdownHook > > and get it to print out anything which will give you a clue. > > > > > > On Tue, 21 Dec 2004 08:47:49 -0500, Greg Lappen <[EMAIL PROTECTED]> > > wrote: > >> Well, turns out the RAM is fine in the server. Our hosting provider > >> tested it last night and said it checked out fine. Is there any other > >> reason that the JVM/Tomcat would just exit like this? Could > >> System.exit() be called somewhere? Isn't there a way to prevent > >> System.exit() from being called? I know I'm grasping at straws, but > >> what else is there to do in this situation? > >> > >> Greg > >> On Dec 20, 2004, at 1:57 PM, Eric Rotick wrote: > >> > >>> I had a similar problem with an almost identical setup to yours which > >>> turned out to be bad memory. An extra 1GB stick was added which had a > >>> bad section in the top of the memory map. This memory only got used > >>> when things got busy so everyone suspected some threading issue. We > >>> got lucky and spotted something totally absurd in the logs which > >>> prompted a memtest86 run and hey presto we got our answer. > >>> > >>> > >>> On Mon, 20 Dec 2004 13:28:56 -0500, Wade Chandler > >>> <[EMAIL PROTECTED]> wrote: > Greg Lappen wrote: > > Hello- > > > > Has anyone had a problem with Tomcat 5.0.28 crashing on Linux with > > no > > error messages? > > > > My production server running with JDK 1.4.2_06, RedHat EL 3.0 just > > crashes, no core dump, no errors in catalina.out, no clues. > > Sometimes > > it goes for days, sometimes it happens several times in one day. I > > am > > running the tomcat process behind Apache 2 with mod_proxy. Setting > > "ulimit -c unlimited" in the catalina.sh startup file still did not > > produce a core file. > > > > If nobody else has experienced this, do you have any suggestions on > > how > > to debug it further? > > > > Thanks, > > > > Greg > > > > > > --- > > -- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: > > [EMAIL PROTECTED] > > > > > > > > I'm using the same setup as you less Apache2. I use tomcat as the > web > server. Using TC5.0.28 and JDK1.4.2_06, and I have yet to have the > server crash once. Not much help, but might give you some clues > where > to look. > > Connector log (mod_proxyassuming you mean you're using the new > connector code)is there anything in the Apache2 log? I assume > from > your post you mean that the java process just completely goes away. > You > might find (depending on the running directory of the java process > running tomcat) a pid dump log file or something...not sure if the > vm > produces one of these or not. You also might check in > /var/log/messages > file to see if for some reason the kernel or some lib got some error > it > logged. > > Wade > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > >>> > >>> - > >>> To unsubscribe, e-mail: [EMAIL PROTECTED] > >>> For additional commands, e-mail: [EMAIL PROTECTED] > >>> > >>> > >>> > >> > >> > >> - > >> To unsubscribe, e-mail: [EMAIL PROTECTED] > >> For additional commands, e-mail: [EMAIL PROTECTED] > >> > >> > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Why is tomcat (java) so memory intensive?
I am using Tomcat 5.0.19 on Windows XP SP2, J2SDK 1.4.2_03. I have a serious memory problem with Tomcat, it just EAT memory without explanation, until OOM error occurs. The Java.exe process in the windows task manager reports using between 95Mb and 105Mb after the startup of the webapp. I do not use Xms Xmx options in dev mode. It just grows until it runs out of memory. There is not much memory available (around 150Mb), yet it should be enough for a few classes, JSP and almost not data in the database. Like a big boy, I decided to use Jprofiler demo to figure out where the memory leak was, to see that there is only 20 Mb allocated by the VM!!! So where does the rest of the memory goes? I do not use any non-java library (dll), I don't think I'm doing anything special. The app use a the Versant JDO implementation (instead of direct JDBC) using MS SQL server. But hey, the app is still in dev mode, with only the developpers using it, the DB is (almost) empty, so the amount data is not in cause. Anyways using 20Mb of heap is very reasonable (there will be at least 1gb available in production), but why is the java.exe process eating memory like a pig an the profiler is not showing where the mem goes? (by the way, I did deleted ALL the filters from Jprofiler). If the app would take 2Gb in memory I would not care, as long as I know what is using the memory. I did profile an app running on 5.0.18, and the same magic happens, the memory used by the java.exe is far from close to what the total heap size of the VM reports to be. Am I going crazy? Any ideas? Thanks Filip:) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Why is tomcat (java) so memory intensive?
you will need to dig deeper into jprobe or whatever profiler you are using. after that you will see where the memory goes. also, try the latest version of tomcat 5.0 Filip -Original Message- From: Philippe Deslauriers [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 21, 2004 8:53 AM To: [EMAIL PROTECTED] Subject: Why is tomcat (java) so memory intensive? I am using Tomcat 5.0.19 on Windows XP SP2, J2SDK 1.4.2_03. I have a serious memory problem with Tomcat, it just EAT memory without explanation, until OOM error occurs. The Java.exe process in the windows task manager reports using between 95Mb and 105Mb after the startup of the webapp. I do not use Xms Xmx options in dev mode. It just grows until it runs out of memory. There is not much memory available (around 150Mb), yet it should be enough for a few classes, JSP and almost not data in the database. Like a big boy, I decided to use Jprofiler demo to figure out where the memory leak was, to see that there is only 20 Mb allocated by the VM!!! So where does the rest of the memory goes? I do not use any non-java library (dll), I don't think I'm doing anything special. The app use a the Versant JDO implementation (instead of direct JDBC) using MS SQL server. But hey, the app is still in dev mode, with only the developpers using it, the DB is (almost) empty, so the amount data is not in cause. Anyways using 20Mb of heap is very reasonable (there will be at least 1gb available in production), but why is the java.exe process eating memory like a pig an the profiler is not showing where the mem goes? (by the way, I did deleted ALL the filters from Jprofiler). If the app would take 2Gb in memory I would not care, as long as I know what is using the memory. I did profile an app running on 5.0.18, and the same magic happens, the memory used by the java.exe is far from close to what the total heap size of the VM reports to be. Am I going crazy? Any ideas? Thanks Filip:) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Why is tomcat (java) so memory intensive?
I would also be interested in some memory/performance tuning possibilities. Ok, if you do not run it standalone but with Apache the web response times should be faster, my profiling gives me the following: CPU SAMPLES BEGIN (total = 8628) Tue Dec 21 16:10:18 2004 rank self accum count trace method 1 33.68% 33.68%2906 300647 java.net.SocketInputStream.socketRead0 2 20.70% 54.38%1786 300557 java.net.PlainSocketImpl.socketAccept 3 20.17% 74.55%1740 300542 java.net.PlainSocketImpl.socketAccept 4 20.12% 94.67%1736 300551 java.net.PlainSocketImpl.socketAccept 5 1.36% 96.02% 117 300669 java.net.SocketInputStream.socketRead0 I think everybody can reproduce profiling with e.g. set JAVA_OPTS=-server -Xms500M -Xmx1000M -Xrunhprof:cpu=samples,interval=20,dept=5 in startup.bat /sh I run tapestry and castor with my web-apps and would assume that they eat most cpu, not the http transfer. You see I give enough memory to avoid Out of memory Exceptions ... - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Why is tomcat (java) so memory intensive?
Philippe Deslauriers wrote: I am using Tomcat 5.0.19 on Windows XP SP2, J2SDK 1.4.2_03. I have a serious memory problem with Tomcat, it just EAT memory without explanation, until OOM error occurs. The Java.exe process in the windows task manager reports using between 95Mb and 105Mb after the startup of the webapp. I do not use Xms Xmx options in dev mode. You do know that the VM will only allocate 64 mb for heap if you don't use the Xmx option, do you? After the 64 mb are used up the vm will throw an oom error. How much memory does the taskmanager report before the oom error happens? Christoph - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Why is tomcat (java) so memory intensive?
and get jvmstat from sun, it will allow you to see which area in the heap runs out of space. Ta Matt -Original Message- From: Filip Hanik (lists) [mailto:[EMAIL PROTECTED] Sent: 21 December 2004 15:12 To: Tomcat Users List Subject: RE: Why is tomcat (java) so memory intensive? you will need to dig deeper into jprobe or whatever profiler you are using. after that you will see where the memory goes. also, try the latest version of tomcat 5.0 Filip -Original Message- From: Philippe Deslauriers [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 21, 2004 8:53 AM To: [EMAIL PROTECTED] Subject: Why is tomcat (java) so memory intensive? I am using Tomcat 5.0.19 on Windows XP SP2, J2SDK 1.4.2_03. I have a serious memory problem with Tomcat, it just EAT memory without explanation, until OOM error occurs. The Java.exe process in the windows task manager reports using between 95Mb and 105Mb after the startup of the webapp. I do not use Xms Xmx options in dev mode. It just grows until it runs out of memory. There is not much memory available (around 150Mb), yet it should be enough for a few classes, JSP and almost not data in the database. Like a big boy, I decided to use Jprofiler demo to figure out where the memory leak was, to see that there is only 20 Mb allocated by the VM!!! So where does the rest of the memory goes? I do not use any non-java library (dll), I don't think I'm doing anything special. The app use a the Versant JDO implementation (instead of direct JDBC) using MS SQL server. But hey, the app is still in dev mode, with only the developpers using it, the DB is (almost) empty, so the amount data is not in cause. Anyways using 20Mb of heap is very reasonable (there will be at least 1gb available in production), but why is the java.exe process eating memory like a pig an the profiler is not showing where the mem goes? (by the way, I did deleted ALL the filters from Jprofiler). If the app would take 2Gb in memory I would not care, as long as I know what is using the memory. I did profile an app running on 5.0.18, and the same magic happens, the memory used by the java.exe is far from close to what the total heap size of the VM reports to be. Am I going crazy? Any ideas? Thanks Filip:) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Any opinions expressed in this E-mail may be those of the individual and not necessarily the company. This E-mail and any files transmitted with it are confidential and solely for the use of the intended recipient. If you are not the intended recipient or the person responsible for delivering to the intended recipient, be advised that you have received this E-mail in error and that any use or copying is strictly prohibited. If you have received this E-mail in error please notify the beCogent postmaster at [EMAIL PROTECTED] Unless expressly stated, opinions in this email are those of the individual sender and not beCogent Ltd. You must take full responsibility for virus checking this email and any attachments. Please note that the content of this email or any of its attachments may contain data that falls within the scope of the Data Protection Acts and that you must ensure that any handling or processing of such data by you is fully compliant with the terms and provisions of the Data Protection Act 1984 and 1998. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat/JVM crashes on Linux
Greg Lappen wrote: That's a good idea, I'm going to try that. Its a cheap way to confirm or deny my suspicions. Thanks! On Dec 21, 2004, at 9:20 AM, Eric Rotick wrote: I've not tried this myself but you could add a Runtime.addShutdownHook and get it to print out anything which will give you a clue. On Tue, 21 Dec 2004 08:47:49 -0500, Greg Lappen <[EMAIL PROTECTED]> wrote: Well, turns out the RAM is fine in the server. Our hosting provider tested it last night and said it checked out fine. Is there any other reason that the JVM/Tomcat would just exit like this? Could System.exit() be called somewhere? Isn't there a way to prevent System.exit() from being called? I know I'm grasping at straws, but what else is there to do in this situation? Greg On Dec 20, 2004, at 1:57 PM, Eric Rotick wrote: I had a similar problem with an almost identical setup to yours which turned out to be bad memory. An extra 1GB stick was added which had a bad section in the top of the memory map. This memory only got used when things got busy so everyone suspected some threading issue. We got lucky and spotted something totally absurd in the logs which prompted a memtest86 run and hey presto we got our answer. On Mon, 20 Dec 2004 13:28:56 -0500, Wade Chandler <[EMAIL PROTECTED]> wrote: Greg Lappen wrote: Hello- Has anyone had a problem with Tomcat 5.0.28 crashing on Linux with no error messages? My production server running with JDK 1.4.2_06, RedHat EL 3.0 just crashes, no core dump, no errors in catalina.out, no clues. Sometimes it goes for days, sometimes it happens several times in one day. I am running the tomcat process behind Apache 2 with mod_proxy. Setting "ulimit -c unlimited" in the catalina.sh startup file still did not produce a core file. If nobody else has experienced this, do you have any suggestions on how to debug it further? Thanks, Greg --- -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I'm using the same setup as you less Apache2. I use tomcat as the web server. Using TC5.0.28 and JDK1.4.2_06, and I have yet to have the server crash once. Not much help, but might give you some clues where to look. Connector log (mod_proxyassuming you mean you're using the new connector code)is there anything in the Apache2 log? I assume from your post you mean that the java process just completely goes away. You might find (depending on the running directory of the java process running tomcat) a pid dump log file or something...not sure if the vm produces one of these or not. You also might check in /var/log/messages file to see if for some reason the kernel or some lib got some error it logged. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Yoav would be able to answer this much better than I, but you should be able to modify the security settings of Tomcat to not allow that call from any of the web apps. I think tomcat has it's own policy file, and you can also add your own policies to only allow the call from certain code bases. In the java docs for the jdk 1.4.x look up "Policy file" and from there you'll find all kinds of information on permissions and code security. You can limit only certain jar files specifically to be able to call this method. Which Tomcat 5.0.x might already do thisI haven't actually tried to tell you the truth. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Why is tomcat (java) so memory intensive?
if you are using the windows service, the default is Xms 128 Xmx 256. > -Original Message- > From: Christoph Kutzinski [mailto:[EMAIL PROTECTED] > Sent: 21 December 2004 15:22 > To: Tomcat Users List > Subject: Re: Why is tomcat (java) so memory intensive? > > > Philippe Deslauriers wrote: > > I am using Tomcat 5.0.19 on Windows XP SP2, J2SDK 1.4.2_03. > > > > I have a serious memory problem with Tomcat, it just EAT > memory without > > explanation, until OOM error occurs. > > > > The Java.exe process in the windows task manager reports > using between 95Mb > > and 105Mb after the startup of the webapp. I do not use Xms > Xmx options in > > dev mode. > > You do know that the VM will only allocate 64 mb for heap if > you don't > use the Xmx option, do you? > After the 64 mb are used up the vm will throw an oom error. > How much memory does the taskmanager report before the oom > error happens? > > > Christoph > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --- QAS Ltd. Developers of QuickAddress Software http://www.qas.com";>www.qas.com Registered in England: No 2582055 Registered in Australia: No 082 851 474 --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] Java developer friendly Linux distro
Nat Gross wrote: Antony Paul wrote: Hi all, Which distro (free) is most friendly for Java development. I need J2SE 1.4.2 to work on it plus Eclipse 3.x(Linux dont have a good text editor in which I can run Ant builds). I use JEDIT for quick simple editing of files, and Eclipse for the real stuff. A great combination. I would not advise using JEDIT instead of Eclipse but I don't want to start a war now. Although I am currently using Fedora Core 2, I am looking to upgrade, and the folks in various Linux/Unix newsgroups are pushing me towards the new Solaris 10, free from Sun. (My main Eclipse work though, for now, is still on a WinXP machine.) fwiw, -nat - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I have tried Solaris on intel over the past recent years, and I love Sun, but my gripe with Solaris on intel is lack of drivers. Look at CentOS or White Box Linux (www.centos.org and www.whiteboxlinux.org respectfully) if you like Red Hat as they are free and use the Red Hat source SRPMs with only stripping out the RH branding, so they are Advanced and Enterprise RH for free using the same source code. SuSE is also very good. I am using 9.1 at the moment. You can purchase SuSE9.2 Professional for 90.00US and get like 7-8 cd's and a DVD with all kinds of nice applications. I've been happy with all the ones I've mentioned. I run Tomcat on all of them, I use Netbeans 4.0 without issue on all of them, and have been developing java on all of them for years. SuSE has been using the 2.6 kernel since their 9.1 release. I've been pleased with it. I've got some friends who like the Debian based distros. To install a VM on them download the non RPM version of the install. That's about it really. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: extra directory in WebDAV servlet listing
Mark, Mark Thomas wrote: I'll look at the arbitrary file system root next. Thanks! I'll get to it as soon as I get more pressing things out of the way, but that may be a week or two. I currently do a file store in another part of the project and make the results available via URIs. I have two variables: baseDirectory baseURI In essence, when a request for a URI comes in, I simply relativize the URI to baseURI, and then resolve it to baseDirectory. Getting the URI of a file in the filesystem requires the reverse process. For the WebDAV servlet, base URI is "configured" by the servlet mapping: "webdav/*" would essentially set the base URI to "http://example.com/webapp/webdav/";. As we've discussed, the base directory would need to be set in a configuration somewhere. Personally, I'd put the configuration in a context parameter, such as: I would *not* put it in the web.xml file, because I want to take the .war and simply drop it on my server. The WebDAV parameter is a system-specific variable, and if I develop on Windows but deploy on Linux, the WebDAV base directory is going to be different on each system. Let me know if I can provide more help or input. Garret - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Why is tomcat (java) so memory intensive?
Actually no, I tough it was 256Mb. Thanks. It will go out of memory around 125Mb 140Mb in the task manager. It depends. But your point just prove my problem to be even stanger: if 64 Mb shoulb be the limit where did the other 60Mb+ go? (the JVM itself never takes that much memory, not from my experience). What I did not mention in the orgininal post is that I have the same problem with an app running on 5.0.18 sam jdk, using -Xms256m -Xmx1024m, it will also run OOM, and again profiling the app did not show any leak, and a large gap between the total heap and whatever the task manger reports. My main issue here is where does the gap come from? -Original Message- From: Christoph Kutzinski [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 21, 2004 10:22 AM To: Tomcat Users List Subject: Re: Why is tomcat (java) so memory intensive? Philippe Deslauriers wrote: > I am using Tomcat 5.0.19 on Windows XP SP2, J2SDK 1.4.2_03. > > I have a serious memory problem with Tomcat, it just EAT memory without > explanation, until OOM error occurs. > > The Java.exe process in the windows task manager reports using between 95Mb > and 105Mb after the startup of the webapp. I do not use Xms Xmx options in > dev mode. You do know that the VM will only allocate 64 mb for heap if you don't use the Xmx option, do you? After the 64 mb are used up the vm will throw an oom error. How much memory does the taskmanager report before the oom error happens? Christoph - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: FORM based authentication config
Thanks for that - but what it describes is what I have done, I think. The problem is: If you have the servlet definitions and mappings, the page isn't found - Since they are JSPs above web-inf in the context folder I think they don't need them. If you don't have the mappings then you get: "HTTP Status 400 - Invalid direct reference to form login page" - with a correct pw/un org.apache.catalina.authenticator.FormAuthenticator authenticate WARNING: Unexpected error forwarding to error page java.lang.NullPointerException with incorrect un/pw i.e. FormAuthenticator cannot forward to say the error page Chris - Original Message - From: "Goel, Manish Kumar" <[EMAIL PROTECTED]> To: "Tomcat Users List" <[EMAIL PROTECTED]> Sent: Tuesday, December 21, 2004 2:26 PM Subject: RE: FORM based authentication config Hi, see this this might help you http://www.webservertalk.com/message633890.html cheers Manish -Original Message- From: Chris Chappell [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 21, 2004 7:45 PM To: Tomcat Users List Subject: FORM based authentication config Hi I'm having trouble getting form based authentication to work. Any help much appreciated. I'm missing something simple I'm sure. (TC 5.0.19, W2K, Mysql4) I am using a JDBC Realm which works fine with BASIC auth. After changing to FORM and try http://127.0.0.1:8080/MyApp/security/protected/login.jsp I get: The requested resource (/MyApp/security/protected/login.jsp) is not available. To set this up I copied the files from the JSP examples - login.jsp, error.jsp in folders \security\protected to \MyApp\security\protected\ I copied web.xml parts: org.apache.jsp.security.protected_.error_jsp org.apache.jsp.security.protected_.error_jsp org.apache.jsp.security.protected_.index_jsp org.apache.jsp.security.protected_.index_jsp org.apache.jsp.security.protected_.login_jsp org.apache.jsp.security.protected_.login_jsp and mappings org.apache.jsp.security.protected_.error_jsp /security/protected/error.jsp org.apache.jsp.security.protected_.index_jsp /security/protected/index.jsp org.apache.jsp.security.protected_.login_jsp /security/protected/login.jsp with Calendar /Calendar user admin sysadmin and configured FORM MyApp /security/protected/login.jsp /security/protected/error.jsp Chris *** Information contained in this email message is intended only for use of the individual or entity named above. If the reader of this message is not the intended recipient, or the employee or agent responsible to deliver it to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please immediately notify the [EMAIL PROTECTED] and destroy the original message. ** - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
How to run servlet for every 30 minutes in Tomcat 4.1.30
Hi, I am using Tomcat4.1.30 version. I have to develop a client application which looks in the database every 30 minutes, to retrieve the status of an order and send the status to the remote client. Again waits for the The client's response and insert the repsonse back to the database. I wanted to do this in a servlet, so is there any way that i could run this servlet automatically inside the Tomcat container, or is it configurable in servlet mapping? if so can someone please suggest me with examples... - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] Java developer friendly Linux distro
Wade Chandler wrote: Nat Gross wrote: Antony Paul wrote: Hi all, Which distro (free) is most friendly for Java development. I need J2SE 1.4.2 to work on it plus Eclipse 3.x(Linux dont have a good text editor in which I can run Ant builds). I use JEDIT for quick simple editing of files, and Eclipse for the real stuff. A great combination. I would not advise using JEDIT instead of Eclipse but I don't want to start a war now. Although I am currently using Fedora Core 2, I am looking to upgrade, and the folks in various Linux/Unix newsgroups are pushing me towards the new Solaris 10, free from Sun. (My main Eclipse work though, for now, is still on a WinXP machine.) fwiw, -nat - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I have tried Solaris on intel over the past recent years, and I love Sun, but my gripe with Solaris on intel is lack of drivers. Look at CentOS or White Box Linux (www.centos.org and www.whiteboxlinux.org respectfully) if you like Red Hat as they are free and use the Red Hat source SRPMs with only stripping out the RH branding, so they are Advanced and Enterprise RH for free using the same source code. SuSE is also very good. I am using 9.1 at the moment. You can purchase SuSE9.2 Professional for 90.00US and get like 7-8 cd's and a DVD with all kinds of nice applications. I've been happy with all the ones I've mentioned. I run Tomcat on all of them, I use Netbeans 4.0 without issue on all of them, and have been developing java on all of them for years. SuSE has been using the 2.6 kernel since their 9.1 release. I've been pleased with it. I've got some friends who like the Debian based distros. To install a VM on them download the non RPM version of the install. That's about it really. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I would say that the most friendly distro will be the one that you are comfortable with. If you are using mainstream tools such as Eclipse, the support on most distros will at least be adequate if not friendly. The best advice is to try a couple and see what works. -- Justin Crabtree Java Programmer Ozarks Technical Community College 447-7533 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Why is tomcat (java) so memory intensive?
you are right, tomcat 5.0.19 did have a memory leak. some dispute it, but it is there, i had it also and used a profiler to show it. you should upgrade to 5.0.28. Allistair. > -Original Message- > From: Philippe Deslauriers [mailto:[EMAIL PROTECTED] > Sent: 21 December 2004 15:47 > To: Tomcat Users List; [EMAIL PROTECTED] > Subject: RE: Why is tomcat (java) so memory intensive? > > > > Actually no, I tough it was 256Mb. Thanks. > It will go out of memory around 125Mb 140Mb in the task > manager. It depends. > > But your point just prove my problem to be even stanger: if > 64 Mb shoulb be > the limit > where did the other 60Mb+ go? (the JVM itself never takes > that much memory, > not from my experience). > > What I did not mention in the orgininal post is that I have > the same problem > with an app running on 5.0.18 sam jdk, using -Xms256m > -Xmx1024m, it will > also run OOM, and again profiling the app did not show any > leak, and a large > gap between the total heap and whatever the task manger reports. > > My main issue here is where does the gap come from? > > > -Original Message- > From: Christoph Kutzinski [mailto:[EMAIL PROTECTED] > Sent: Tuesday, December 21, 2004 10:22 AM > To: Tomcat Users List > Subject: Re: Why is tomcat (java) so memory intensive? > > > Philippe Deslauriers wrote: > > I am using Tomcat 5.0.19 on Windows XP SP2, J2SDK 1.4.2_03. > > > > I have a serious memory problem with Tomcat, it just EAT > memory without > > explanation, until OOM error occurs. > > > > The Java.exe process in the windows task manager reports > using between > 95Mb > > and 105Mb after the startup of the webapp. I do not use Xms > Xmx options in > > dev mode. > > You do know that the VM will only allocate 64 mb for heap if you don't > use the Xmx option, do you? > After the 64 mb are used up the vm will throw an oom error. > How much memory does the taskmanager report before the oom > error happens? > > > Christoph > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --- QAS Ltd. Developers of QuickAddress Software http://www.qas.com";>www.qas.com Registered in England: No 2582055 Registered in Australia: No 082 851 474 --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
Shilpa Nalgonda wrote: Hi, I am using Tomcat4.1.30 version. I have to develop a client application which looks in the database every 30 minutes, to retrieve the status of an order and send the status to the remote client. Again waits for the The client's response and insert the repsonse back to the database. I wanted to do this in a servlet, so is there any way that i could run this servlet automatically inside the Tomcat container, or is it configurable in servlet mapping? if so can someone please suggest me with examples... - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Wellit's kind of not extremely clear what you are asking, but why does the servlet need to do anything except listen for a client which is threaded to do this every 30 minutes, in other words...why not have the servlet do what it naturally does...sit there and get hit by client requestsget the infoand send it back? I mean...the servlet can't push to the client unless you want to use something besides http, or unless you are using servlets on both ends and http servers on both ends. You could use keep alives I guess.I wouldn't thoughonly so many tcp/ip connections. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
AW: How to run servlet for every 30 minutes in Tomcat 4.1.30
Hi, you can use something like HTTPUnit which just calls the web page with your servlet. Can can easiliy schedule the HTTPUnit Job, so it runs every 30mins. Cheers Bernhard -Ursprüngliche Nachricht- Von: Shilpa Nalgonda [mailto:[EMAIL PROTECTED] Gesendet: Dienstag, 21. Dezember 2004 16:44 An: Tomcat Users List Betreff: How to run servlet for every 30 minutes in Tomcat 4.1.30 Hi, I am using Tomcat4.1.30 version. I have to develop a client application which looks in the database every 30 minutes, to retrieve the status of an order and send the status to the remote client. Again waits for the The client's response and insert the repsonse back to the database. I wanted to do this in a servlet, so is there any way that i could run this servlet automatically inside the Tomcat container, or is it configurable in servlet mapping? if so can someone please suggest me with examples... - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Why is tomcat (java) so memory intensive?
i think (from memory) it had to do with registering requests with jk. anyway, like i say, upgrade and you'll see that leak go away i am pretty sure. > -Original Message- > From: Allistair Crossley > Sent: 21 December 2004 16:00 > To: Tomcat Users List; [EMAIL PROTECTED] > Subject: RE: Why is tomcat (java) so memory intensive? > > > you are right, tomcat 5.0.19 did have a memory leak. some > dispute it, but it is there, i had it also and used a > profiler to show it. you should upgrade to 5.0.28. > > Allistair. > > > -Original Message- > > From: Philippe Deslauriers [mailto:[EMAIL PROTECTED] > > Sent: 21 December 2004 15:47 > > To: Tomcat Users List; [EMAIL PROTECTED] > > Subject: RE: Why is tomcat (java) so memory intensive? > > > > > > > > Actually no, I tough it was 256Mb. Thanks. > > It will go out of memory around 125Mb 140Mb in the task > > manager. It depends. > > > > But your point just prove my problem to be even stanger: if > > 64 Mb shoulb be > > the limit > > where did the other 60Mb+ go? (the JVM itself never takes > > that much memory, > > not from my experience). > > > > What I did not mention in the orgininal post is that I have > > the same problem > > with an app running on 5.0.18 sam jdk, using -Xms256m > > -Xmx1024m, it will > > also run OOM, and again profiling the app did not show any > > leak, and a large > > gap between the total heap and whatever the task manger reports. > > > > My main issue here is where does the gap come from? > > > > > > -Original Message- > > From: Christoph Kutzinski [mailto:[EMAIL PROTECTED] > > Sent: Tuesday, December 21, 2004 10:22 AM > > To: Tomcat Users List > > Subject: Re: Why is tomcat (java) so memory intensive? > > > > > > Philippe Deslauriers wrote: > > > I am using Tomcat 5.0.19 on Windows XP SP2, J2SDK 1.4.2_03. > > > > > > I have a serious memory problem with Tomcat, it just EAT > > memory without > > > explanation, until OOM error occurs. > > > > > > The Java.exe process in the windows task manager reports > > using between > > 95Mb > > > and 105Mb after the startup of the webapp. I do not use Xms > > Xmx options in > > > dev mode. > > > > You do know that the VM will only allocate 64 mb for heap > if you don't > > use the Xmx option, do you? > > After the 64 mb are used up the vm will throw an oom error. > > How much memory does the taskmanager report before the oom > > error happens? > > > > > > Christoph > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > --- > QAS Ltd. > Developers of QuickAddress Software > http://www.qas.com";>www.qas.com > Registered in England: No 2582055 > Registered in Australia: No 082 851 474 > --- > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
New user Virtual host problem
Hi all, I have previously setup tomcat 5.x running on apache 1.3.x. Everything works fine and I'm learning lots as I go, although I have run into a problem with adding new domains to my apache. I have setup another site in the webapps directory however apache will only serve it using my primary machine ip, e.g. http://192.168.0.5/newsite which then gets redirected to my newsite on port 8080. I want to be able to have http://192.168.0.6 just go to that new site, however when I place that in my httpd.conf it does not work. Is there some docs which explain adding VirtualHosts to apache which point to the tomcat webapps directory? Thank you for any help, Rick - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Tomcat 5, jk2, Apache 2 and mixed name/IP virtual hosts
Hello, I've got a Tomcat 5 / Apache 2 / jk2 server which has been serving several different virtual hosts which share a common IP address. I now need to implement my first SSL-protected website on this machine, and I am working under the assumption that this site must have a dedicated IP address in order for SSL to work. First of all, is this assumption correct? But I haven't gotten to the part of setting up the SSL connector yet, I'm struggling with the IP address routing at the moment. Assuming that I do indeed need to have this site on a separate IP, how do I configure Apache, jk2 and Tomcat to work with the additional IP address without interrupting the existing name-based virtual hosts? Relevant sections of my configuration are below. name-based-client1.com and name-based-client2.com are working as desired already, but IP-ssl-client.com is not responding to requests. One thing that confuses me: I found instructions on how to setup Tomcat to work with another IP by creating another Connector in server.xml, but if I setup a new Connector, how can jk2 route the requests from Apache, rather than Tomcat handling it entirely? Do I need to modify workers2.properties instead and leave server.xml as is? It seems like this approach would lead to a standalone Tomcat intercepting requests to that IP, but I definitely need Apache to handle the requests before redirecting JSP requests to Tomcat. TIA, Troy server.xml: ... www.name-based-client1.com www.name-based-client2.com www.IP-ssl-client.com ... httpd.conf: ... DocumentRoot /usr/local/tomcat/webapps/name-based-client1.com ServerName name-based-client1.com ServerAlias www.name-based-client1.com DirectoryIndex index.jsp index.html index.cgi index.php CustomLog logs/name-based-client1.com_access_log combined ErrorLog logs/name-based-client1.com_error_log JkUriSet worker ajp13:localhost:8009 ScriptAlias /cgi-bin/ /usr/local/tomcat/webapps/name-based-client1.com/cgi-bin/ AllowOverride None Options None Order allow,deny Allow from all AllowOverride AuthConfig DocumentRoot /usr/local/tomcat/webapps/name-based-client2.com ServerName name-based-client2.com ServerAlias www.name-based-client2.com DirectoryIndex index.jsp index.html index.cgi index.php CustomLog logs/name-based-client2.com_access_log combined ErrorLog logs/name-based-client2.com_error_log JkUriSet worker ajp13:localhost:8009 ScriptAlias /cgi-bin/ /usr/local/tomcat/webapps/name-based-client2.com/web/cgi-bin/ AllowOverride None Options None Order allow,deny Allow from all AllowOverride AuthConfig Listen 192.168.1.2:80 DocumentRoot /usr/local/tomcat/webapps/IP-ssl-client.com ServerName IP-ssl-client.com DirectoryIndex index.jsp index.html index.cgi index.php CustomLog logs/IP-ssl-client.com_access_log combined ErrorLog logs/IP-ssl-client.com_error_log JkUriSet worker ajp13:localhost:8009 ScriptAlias /cgi-bin/ /usr/local/tomcat/webapps/IP-ssl-client.com/cgi-bin/ AllowOverride None Options None Order allow,deny Allow from all AllowOverride AuthConfig ... workers2.properties: [shm] info=Scoreboard. Requried for reconfiguration and status with multiprocess servers. file=anon # Defines a load balancer named lb. Use even if you only have one machine. [lb:lb] # Example socket channel, override port and host. [channel.socket:localhost:8009] port=8009 host=127.0.0.1 # define the worker [ajp13:localhost:8009] channel=channel.socket:localhost:8009 group=lb # Map the Tomcat examples webapp to the Web server uri space [uri:/examples/*] group=lb [status:] info=Status worker, displays runtime information [uri:/jkstatus/*] info=The Tomcat /jkstatus handler group=status: __ Troy Davis Technology Director Metaphor Studio 538 Reading Road Loft 200 Cincinnati, Ohio 45202 Tel: 513-723-0290 Fax: 513-723-0670 http://metaphorstudio.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] Java developer friendly Linux distro
... has somebody experience with gcj? On RHEL eclipse (but only 2.1.2) works with it and it looks faster than with Sun jdk. gcj could be also an option for tomcat, I'll try as soon I have time for it ... - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
+1. you aren't being clear the only reason I can think you have an application wishing to talk to a servlet is that you are then going on to request info from the servlet from a remote machine across the net?? .. in that case and most others you should have your application polling the servlet itself in a thread. you'll need to explain your scenario if this is inaccurate, i.e if the Java App is in fact also a web app. JAVA APPLICATION || TOMCAT + SERVLET || INTERNET || REMOTE MACHINE - POLL 30s -> REQUEST INFO > <--- RESPONSE <-- RESPONSE > -Original Message- > From: Wade Chandler [mailto:[EMAIL PROTECTED] > Sent: 21 December 2004 16:03 > To: Tomcat Users List > Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > Shilpa Nalgonda wrote: > > Hi, > > I am using Tomcat4.1.30 version. > > I have to develop a client application which looks in the > database every 30 > > minutes, > > to retrieve the status of an order and send the status to > the remote client. > > Again waits for the > > The client's response and insert the repsonse back to the database. > > > > I wanted to do this in a servlet, so is there any way that > i could run this > > servlet automatically inside the > > Tomcat container, or is it configurable in servlet mapping? > if so can > > someone please suggest me with examples... > > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > Wellit's kind of not extremely clear what you are asking, but why > does the servlet need to do anything except listen for a > client which is > threaded to do this every 30 minutes, in other words...why > not have the > servlet do what it naturally does...sit there and get hit by client > requestsget the infoand send it back? I mean...the servlet > can't push to the client unless you want to use something > besides http, > or unless you are using servlets on both ends and http > servers on both > ends. You could use keep alives I guess.I wouldn't > thoughonly > so many tcp/ip connections. > > Wade > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --- QAS Ltd. Developers of QuickAddress Software http://www.qas.com";>www.qas.com Registered in England: No 2582055 Registered in Australia: No 082 851 474 --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
Hello, Shilpa, With Wade, I wonder what you want. Apparently you have a client making and order and being informed about the status of the order. You say you have to develop a "client application" which looks to the database. Since this is a Tomcat list, that would seem to be a "server application"?Maybe by "client application" you mean a "server application" to help clients? If you are using a web, browser, based application, then you have to wait for the client to check with you rather than "send the status to the remote client". Blah, blah, blah. The point, I guess, is that you really need to say in more detail what you are doing. What does your client look like? Can you create a rich client? Etc. Jack -- "You can lead a horse to water but you cannot make it float on its back." ~Dakota Jack~ "You can't wake a person who is pretending to be asleep." ~Native Proverb~ "Each man is good in His sight. It is not necessary for eagles to be crows." ~Hunkesni (Sitting Bull), Hunkpapa Sioux~ --- "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
Thanks for the reply... The application which i am trying to write is a standalone utility.. Client does not hit this servlet. Instead my application which is a servlet, will make some database calls-- and if the required data is present in the database, then that data is sent to the client via xmlrpc call and the response from the xmlrpc call is updated back into the dataabse. So we want this utility preferably servlet in our Tomcat container to be run every 30 minutes like a cron job, to do the database updates.. There are so many other classes deployed on Tomcat and i want to use those classes to write this servlet utility. This is the reason why chose to use servlet, but is there any configurable parameter to run servlet for every 30 minutes... -Original Message- From: Wade Chandler [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 21, 2004 11:03 AM To: Tomcat Users List Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 Shilpa Nalgonda wrote: > Hi, > I am using Tomcat4.1.30 version. > I have to develop a client application which looks in the database every 30 > minutes, > to retrieve the status of an order and send the status to the remote client. > Again waits for the > The client's response and insert the repsonse back to the database. > > I wanted to do this in a servlet, so is there any way that i could run this > servlet automatically inside the > Tomcat container, or is it configurable in servlet mapping? if so can > someone please suggest me with examples... > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > Wellit's kind of not extremely clear what you are asking, but why does the servlet need to do anything except listen for a client which is threaded to do this every 30 minutes, in other words...why not have the servlet do what it naturally does...sit there and get hit by client requestsget the infoand send it back? I mean...the servlet can't push to the client unless you want to use something besides http, or unless you are using servlets on both ends and http servers on both ends. You could use keep alives I guess.I wouldn't thoughonly so many tcp/ip connections. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
AW: performance issue with JK und IIS6
Do you have some smart keywords for searching this issue? Michael > -Ursprüngliche Nachricht- > Von: Parsons Technical Services > [mailto:[EMAIL PROTECTED] > Gesendet: Dienstag, 21. Dezember 2004 13:21 > An: Tomcat Users List > Betreff: Re: performance issue with JK und IIS6 > > > Check the archives. There was a similar issue less than a > couple of month > ago. > > I think it involved a problem with ack. > > Doug - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
no, and I believe doing so it bad practice. use some OS controlled timer like cron to issue a HTTP call to your servlet. I once wrote a shell script that calls a http address on the local machine but cannot remember how ;) if you are using oracle then you can setup this timer thread inside the database itself. don't add a thread into your web application. > -Original Message- > From: Shilpa Nalgonda [mailto:[EMAIL PROTECTED] > Sent: 21 December 2004 16:14 > To: Tomcat Users List > Subject: RE: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > Thanks for the reply... > > The application which i am trying to write is a standalone > utility.. Client > does not hit this servlet. > > Instead my application which is a servlet, will make some > database calls-- > and if the required data is present in the database, then > that data is sent > to the client via xmlrpc call and the response from the xmlrpc call is > updated back into the dataabse. > > So we want this utility preferably servlet in our Tomcat > container to be run > every 30 minutes like a cron job, to do the database updates.. > > There are so many other classes deployed on Tomcat and i want > to use those > classes to write this servlet utility. > This is the reason why chose to use servlet, but is there any > configurable > parameter to run servlet for every 30 minutes... > > -Original Message- > From: Wade Chandler [mailto:[EMAIL PROTECTED] > Sent: Tuesday, December 21, 2004 11:03 AM > To: Tomcat Users List > Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > Shilpa Nalgonda wrote: > > Hi, > > I am using Tomcat4.1.30 version. > > I have to develop a client application which looks in the > database every > 30 > > minutes, > > to retrieve the status of an order and send the status to the remote > client. > > Again waits for the > > The client's response and insert the repsonse back to the database. > > > > I wanted to do this in a servlet, so is there any way that > i could run > this > > servlet automatically inside the > > Tomcat container, or is it configurable in servlet mapping? > if so can > > someone please suggest me with examples... > > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > Wellit's kind of not extremely clear what you are asking, but why > does the servlet need to do anything except listen for a > client which is > threaded to do this every 30 minutes, in other words...why > not have the > servlet do what it naturally does...sit there and get hit by client > requestsget the infoand send it back? I mean...the servlet > can't push to the client unless you want to use something > besides http, > or unless you are using servlets on both ends and http servers on both > ends. You could use keep alives I guess.I wouldn't thoughonly > so many tcp/ip connections. > > Wade > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --- QAS Ltd. Developers of QuickAddress Software http://www.qas.com";>www.qas.com Registered in England: No 2582055 Registered in Australia: No 082 851 474 --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Why is tomcat (java) so memory intensive?
Why, then, does the Tomcat 5.0 say in the RELEASE-NOTES "JAVAC leaking memory" is an issue? On Tue, 21 Dec 2004 16:06:13 -, Allistair Crossley <[EMAIL PROTECTED]> wrote: > i think (from memory) it had to do with registering requests with jk. anyway, > like i say, upgrade and you'll see that leak go away i am pretty sure. > > > -Original Message- > > From: Allistair Crossley > > Sent: 21 December 2004 16:00 > > To: Tomcat Users List; [EMAIL PROTECTED] > > Subject: RE: Why is tomcat (java) so memory intensive? > > > > > > you are right, tomcat 5.0.19 did have a memory leak. some > > dispute it, but it is there, i had it also and used a > > profiler to show it. you should upgrade to 5.0.28. > > Thanks, Jack -- "You can lead a horse to water but you cannot make it float on its back." ~Dakota Jack~ "You can't wake a person who is pretending to be asleep." ~Native Proverb~ "Each man is good in His sight. It is not necessary for eagles to be crows." ~Hunkesni (Sitting Bull), Hunkpapa Sioux~ --- "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
Why are you writing a servlet for this? If the application does not use any of the services confined to the Servlet API and Tomcat, just write a stand-alone application and setup up a cron job to run it. Seems like overkill to me. On Tue, 21 Dec 2004 16:28:49 -, Allistair Crossley <[EMAIL PROTECTED]> wrote: > no, and I believe doing so it bad practice. use some OS controlled timer like > cron to issue a HTTP call to your servlet. I once wrote a shell script that > calls a http address on the local machine but cannot remember how ;) if you > are using oracle then you can setup this timer thread inside the database > itself. don't add a thread into your web application. > > > -Original Message- > > From: Shilpa Nalgonda [mailto:[EMAIL PROTECTED] > > Sent: 21 December 2004 16:14 > > To: Tomcat Users List > > Subject: RE: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > > > > Thanks for the reply... > > > > The application which i am trying to write is a standalone > > utility.. Client > > does not hit this servlet. > > > > Instead my application which is a servlet, will make some > > database calls-- > > and if the required data is present in the database, then > > that data is sent > > to the client via xmlrpc call and the response from the xmlrpc call is > > updated back into the dataabse. > > > > So we want this utility preferably servlet in our Tomcat > > container to be run > > every 30 minutes like a cron job, to do the database updates.. > > > > There are so many other classes deployed on Tomcat and i want > > to use those > > classes to write this servlet utility. > > This is the reason why chose to use servlet, but is there any > > configurable > > parameter to run servlet for every 30 minutes... > > > > -Original Message- > > From: Wade Chandler [mailto:[EMAIL PROTECTED] > > Sent: Tuesday, December 21, 2004 11:03 AM > > To: Tomcat Users List > > Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > > > > Shilpa Nalgonda wrote: > > > Hi, > > > I am using Tomcat4.1.30 version. > > > I have to develop a client application which looks in the > > database every > > 30 > > > minutes, > > > to retrieve the status of an order and send the status to the remote > > client. > > > Again waits for the > > > The client's response and insert the repsonse back to the database. > > > > > > I wanted to do this in a servlet, so is there any way that > > i could run > > this > > > servlet automatically inside the > > > Tomcat container, or is it configurable in servlet mapping? > > if so can > > > someone please suggest me with examples... > > > > > > > > > > > - > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > > Wellit's kind of not extremely clear what you are asking, but why > > does the servlet need to do anything except listen for a > > client which is > > threaded to do this every 30 minutes, in other words...why > > not have the > > servlet do what it naturally does...sit there and get hit by client > > requestsget the infoand send it back? I mean...the servlet > > can't push to the client unless you want to use something > > besides http, > > or unless you are using servlets on both ends and http servers on both > > ends. You could use keep alives I guess.I wouldn't thoughonly > > so many tcp/ip connections. > > > > Wade > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > --- > QAS Ltd. > Developers of QuickAddress Software > http://www.qas.com";>www.qas.com > Registered in England: No 2582055 > Registered in Australia: No 082 851 474 > --- > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Why is tomcat (java) so memory intensive?
Sorry, misread what you said. Jack On Tue, 21 Dec 2004 08:40:01 -0800, Dakota Jack <[EMAIL PROTECTED]> wrote: > Why, then, does the Tomcat 5.0 say in the RELEASE-NOTES "JAVAC leaking > memory" is an issue? > > > On Tue, 21 Dec 2004 16:06:13 -, Allistair Crossley > <[EMAIL PROTECTED]> wrote: > > i think (from memory) it had to do with registering requests with jk. > > anyway, like i say, upgrade and you'll see that leak go away i am pretty > > sure. > > > > > -Original Message- > > > From: Allistair Crossley > > > Sent: 21 December 2004 16:00 > > > To: Tomcat Users List; [EMAIL PROTECTED] > > > Subject: RE: Why is tomcat (java) so memory intensive? > > > > > > > > > you are right, tomcat 5.0.19 did have a memory leak. some > > > dispute it, but it is there, i had it also and used a > > > profiler to show it. you should upgrade to 5.0.28. > > > > > > Thanks, > > Jack > > -- > "You can lead a horse to water but you cannot make it float on its back." > > ~Dakota Jack~ > > "You can't wake a person who is pretending to be asleep." > > ~Native Proverb~ > > "Each man is good in His sight. It is not necessary for eagles to be crows." > > ~Hunkesni (Sitting Bull), Hunkpapa Sioux~ > > --- > > "This message may contain confidential and/or privileged information. > If you are not the addressee or authorized to receive this for the > addressee, you must not use, copy, disclose, or take any action based > on this message or any information herein. If you have received this > message in error, please advise the sender immediately by reply e-mail > and delete this message. Thank you for your cooperation." > -- "You can lead a horse to water but you cannot make it float on its back." ~Dakota Jack~ "You can't wake a person who is pretending to be asleep." ~Native Proverb~ "Each man is good in His sight. It is not necessary for eagles to be crows." ~Hunkesni (Sitting Bull), Hunkpapa Sioux~ --- "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
On Tue, 2004-12-21 at 11:28, Allistair Crossley wrote: > no, and I believe doing so it bad practice. use some OS controlled timer like > cron to issue a HTTP call to your servlet. I once wrote a shell script that > calls a http address on the local machine but cannot remember how ;) if you > are using oracle then you can setup this timer thread inside the database > itself. don't add a thread into your web application. > I concur. It's certainly possible to write a treaded java object that fires a command every so often but there would be no point in making that object a servlet (servlets exist to answer client requests). It's also, IMHO, more aggravation than it's worth to manage your own daemon threads in a webapp. It would take all of 2 minutes to write a timer with crontab and wget that could call your servlet whenever you want. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
I agree. Also You could write a standalone java class which does nothing but makes a http call to your Servlet. This class can be scheduled to run as a task every 30 minutes or so. pandu From: "Allistair Crossley" <[EMAIL PROTECTED]> Reply-To: "Tomcat Users List" <[EMAIL PROTECTED]> To: "Tomcat Users List" <[EMAIL PROTECTED]> Subject: RE: How to run servlet for every 30 minutes in Tomcat 4.1.30 Date: Tue, 21 Dec 2004 16:28:49 - no, and I believe doing so it bad practice. use some OS controlled timer like cron to issue a HTTP call to your servlet. I once wrote a shell script that calls a http address on the local machine but cannot remember how ;) if you are using oracle then you can setup this timer thread inside the database itself. don't add a thread into your web application. > -Original Message- > From: Shilpa Nalgonda [mailto:[EMAIL PROTECTED] > Sent: 21 December 2004 16:14 > To: Tomcat Users List > Subject: RE: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > Thanks for the reply... > > The application which i am trying to write is a standalone > utility.. Client > does not hit this servlet. > > Instead my application which is a servlet, will make some > database calls-- > and if the required data is present in the database, then > that data is sent > to the client via xmlrpc call and the response from the xmlrpc call is > updated back into the dataabse. > > So we want this utility preferably servlet in our Tomcat > container to be run > every 30 minutes like a cron job, to do the database updates.. > > There are so many other classes deployed on Tomcat and i want > to use those > classes to write this servlet utility. > This is the reason why chose to use servlet, but is there any > configurable > parameter to run servlet for every 30 minutes... > > -Original Message- > From: Wade Chandler [mailto:[EMAIL PROTECTED] > Sent: Tuesday, December 21, 2004 11:03 AM > To: Tomcat Users List > Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > Shilpa Nalgonda wrote: > > Hi, > > I am using Tomcat4.1.30 version. > > I have to develop a client application which looks in the > database every > 30 > > minutes, > > to retrieve the status of an order and send the status to the remote > client. > > Again waits for the > > The client's response and insert the repsonse back to the database. > > > > I wanted to do this in a servlet, so is there any way that > i could run > this > > servlet automatically inside the > > Tomcat container, or is it configurable in servlet mapping? > if so can > > someone please suggest me with examples... > > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > Wellit's kind of not extremely clear what you are asking, but why > does the servlet need to do anything except listen for a > client which is > threaded to do this every 30 minutes, in other words...why > not have the > servlet do what it naturally does...sit there and get hit by client > requestsget the infoand send it back? I mean...the servlet > can't push to the client unless you want to use something > besides http, > or unless you are using servlets on both ends and http servers on both > ends. You could use keep alives I guess.I wouldn't thoughonly > so many tcp/ip connections. > > Wade > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --- QAS Ltd. Developers of QuickAddress Software http://www.qas.com";>www.qas.com Registered in England: No 2582055 Registered in Australia: No 082 851 474 --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Why is tomcat (java) so memory intensive?
Is there any reason not to upgrade to 5.5? Is that ready for prime time? Thanks. Jack On Tue, 21 Dec 2004 16:06:13 -, Allistair Crossley <[EMAIL PROTECTED]> wrote: > i think (from memory) it had to do with registering requests with jk. anyway, > like i say, upgrade and you'll see that leak go away i am pretty sure. > > > -Original Message- > > From: Allistair Crossley > > Sent: 21 December 2004 16:00 > > To: Tomcat Users List; [EMAIL PROTECTED] > > Subject: RE: Why is tomcat (java) so memory intensive? > > > > > > you are right, tomcat 5.0.19 did have a memory leak. some > > dispute it, but it is there, i had it also and used a > > profiler to show it. you should upgrade to 5.0.28. > > > > Allistair. > > > > > -Original Message- > > > From: Philippe Deslauriers [mailto:[EMAIL PROTECTED] > > > Sent: 21 December 2004 15:47 > > > To: Tomcat Users List; [EMAIL PROTECTED] > > > Subject: RE: Why is tomcat (java) so memory intensive? > > > > > > > > > > > > Actually no, I tough it was 256Mb. Thanks. > > > It will go out of memory around 125Mb 140Mb in the task > > > manager. It depends. > > > > > > But your point just prove my problem to be even stanger: if > > > 64 Mb shoulb be > > > the limit > > > where did the other 60Mb+ go? (the JVM itself never takes > > > that much memory, > > > not from my experience). > > > > > > What I did not mention in the orgininal post is that I have > > > the same problem > > > with an app running on 5.0.18 sam jdk, using -Xms256m > > > -Xmx1024m, it will > > > also run OOM, and again profiling the app did not show any > > > leak, and a large > > > gap between the total heap and whatever the task manger reports. > > > > > > My main issue here is where does the gap come from? > > > > > > > > > -Original Message- > > > From: Christoph Kutzinski [mailto:[EMAIL PROTECTED] > > > Sent: Tuesday, December 21, 2004 10:22 AM > > > To: Tomcat Users List > > > Subject: Re: Why is tomcat (java) so memory intensive? > > > > > > > > > Philippe Deslauriers wrote: > > > > I am using Tomcat 5.0.19 on Windows XP SP2, J2SDK 1.4.2_03. > > > > > > > > I have a serious memory problem with Tomcat, it just EAT > > > memory without > > > > explanation, until OOM error occurs. > > > > > > > > The Java.exe process in the windows task manager reports > > > using between > > > 95Mb > > > > and 105Mb after the startup of the webapp. I do not use Xms > > > Xmx options in > > > > dev mode. > > > > > > You do know that the VM will only allocate 64 mb for heap > > if you don't > > > use the Xmx option, do you? > > > After the 64 mb are used up the vm will throw an oom error. > > > How much memory does the taskmanager report before the oom > > > error happens? > > > > > > > > > Christoph > > > > > > > > - > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > > > - > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > > > --- > > QAS Ltd. > > Developers of QuickAddress Software > > http://www.qas.com";>www.qas.com > > Registered in England: No 2582055 > > Registered in Australia: No 082 851 474 > > --- > > > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > -- "You can lead a horse to water but you cannot make it float on its back." ~Dakota Jack~ "You can't wake a person who is pretending to be asleep." ~Native Proverb~ "Each man is good in His sight. It is not necessary for eagles to be crows." ~Hunkesni (Sitting Bull), Hunkpapa Sioux~ --- "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Why is tomcat (java) so memory intensive?
Sounds like you are running out of space in the permanent generation. Add -XX:MaxPermSize=128M to your JAVA_OPTS -Original Message- From: Philippe Deslauriers [mailto:[EMAIL PROTECTED] Sent: 21 December 2004 15:47 To: Tomcat Users List; [EMAIL PROTECTED] Subject: RE: Why is tomcat (java) so memory intensive? Actually no, I tough it was 256Mb. Thanks. It will go out of memory around 125Mb 140Mb in the task manager. It depends. But your point just prove my problem to be even stanger: if 64 Mb shoulb be the limit where did the other 60Mb+ go? (the JVM itself never takes that much memory, not from my experience). What I did not mention in the orgininal post is that I have the same problem with an app running on 5.0.18 sam jdk, using -Xms256m -Xmx1024m, it will also run OOM, and again profiling the app did not show any leak, and a large gap between the total heap and whatever the task manger reports. My main issue here is where does the gap come from? -Original Message- From: Christoph Kutzinski [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 21, 2004 10:22 AM To: Tomcat Users List Subject: Re: Why is tomcat (java) so memory intensive? Philippe Deslauriers wrote: > I am using Tomcat 5.0.19 on Windows XP SP2, J2SDK 1.4.2_03. > > I have a serious memory problem with Tomcat, it just EAT memory without > explanation, until OOM error occurs. > > The Java.exe process in the windows task manager reports using between 95Mb > and 105Mb after the startup of the webapp. I do not use Xms Xmx options in > dev mode. You do know that the VM will only allocate 64 mb for heap if you don't use the Xmx option, do you? After the 64 mb are used up the vm will throw an oom error. How much memory does the taskmanager report before the oom error happens? Christoph - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Any opinions expressed in this E-mail may be those of the individual and not necessarily the company. This E-mail and any files transmitted with it are confidential and solely for the use of the intended recipient. If you are not the intended recipient or the person responsible for delivering to the intended recipient, be advised that you have received this E-mail in error and that any use or copying is strictly prohibited. If you have received this E-mail in error please notify the beCogent postmaster at [EMAIL PROTECTED] Unless expressly stated, opinions in this email are those of the individual sender and not beCogent Ltd. You must take full responsibility for virus checking this email and any attachments. Please note that the content of this email or any of its attachments may contain data that falls within the scope of the Data Protection Acts and that you must ensure that any handling or processing of such data by you is fully compliant with the terms and provisions of the Data Protection Act 1984 and 1998. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat 5, jk2, Apache 2 and mixed name/IP virtual hosts
Troy Davis <[EMAIL PROTECTED]> wrote on 21/12/2004 17.07.40: > Hello, > > I've got a Tomcat 5 / Apache 2 / jk2 server which has been serving > several different virtual hosts which share a common IP address. I now > need to implement my first SSL-protected website on this machine, and I > am working under the assumption that this site must have a dedicated IP > address in order for SSL to work. First of all, is this assumption > correct? Yes, should be see http://httpd.apache.org/docs-2.0/vhosts/name-based.html "Name-based virtual hosting cannot be used with SSL secure servers because of the nature of the SSL protocol. " Gaël - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
Laba diena. Dėkojame, kad mums parašėte. Jūsų atsiųsta žinutė išsaugota mūsų duomenų bazėje. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
My application has to use the connection pooling of Tomcat to talk to the database... and all my Database access classes are deployed om Tomcat...so if i just write a java standalone command line program, can i access those connection pooling classes... -Original Message- From: Billy Talton [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 21, 2004 11:41 AM To: Tomcat Users List Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 Why are you writing a servlet for this? If the application does not use any of the services confined to the Servlet API and Tomcat, just write a stand-alone application and setup up a cron job to run it. Seems like overkill to me. On Tue, 21 Dec 2004 16:28:49 -, Allistair Crossley <[EMAIL PROTECTED]> wrote: > no, and I believe doing so it bad practice. use some OS controlled timer like cron to issue a HTTP call to your servlet. I once wrote a shell script that calls a http address on the local machine but cannot remember how ;) if you are using oracle then you can setup this timer thread inside the database itself. don't add a thread into your web application. > > > -Original Message- > > From: Shilpa Nalgonda [mailto:[EMAIL PROTECTED] > > Sent: 21 December 2004 16:14 > > To: Tomcat Users List > > Subject: RE: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > > > > Thanks for the reply... > > > > The application which i am trying to write is a standalone > > utility.. Client > > does not hit this servlet. > > > > Instead my application which is a servlet, will make some > > database calls-- > > and if the required data is present in the database, then > > that data is sent > > to the client via xmlrpc call and the response from the xmlrpc call is > > updated back into the dataabse. > > > > So we want this utility preferably servlet in our Tomcat > > container to be run > > every 30 minutes like a cron job, to do the database updates.. > > > > There are so many other classes deployed on Tomcat and i want > > to use those > > classes to write this servlet utility. > > This is the reason why chose to use servlet, but is there any > > configurable > > parameter to run servlet for every 30 minutes... > > > > -Original Message- > > From: Wade Chandler [mailto:[EMAIL PROTECTED] > > Sent: Tuesday, December 21, 2004 11:03 AM > > To: Tomcat Users List > > Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > > > > Shilpa Nalgonda wrote: > > > Hi, > > > I am using Tomcat4.1.30 version. > > > I have to develop a client application which looks in the > > database every > > 30 > > > minutes, > > > to retrieve the status of an order and send the status to the remote > > client. > > > Again waits for the > > > The client's response and insert the repsonse back to the database. > > > > > > I wanted to do this in a servlet, so is there any way that > > i could run > > this > > > servlet automatically inside the > > > Tomcat container, or is it configurable in servlet mapping? > > if so can > > > someone please suggest me with examples... > > > > > > > > > > > - > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > > Wellit's kind of not extremely clear what you are asking, but why > > does the servlet need to do anything except listen for a > > client which is > > threaded to do this every 30 minutes, in other words...why > > not have the > > servlet do what it naturally does...sit there and get hit by client > > requestsget the infoand send it back? I mean...the servlet > > can't push to the client unless you want to use something > > besides http, > > or unless you are using servlets on both ends and http servers on both > > ends. You could use keep alives I guess.I wouldn't thoughonly > > so many tcp/ip connections. > > > > Wade > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > --- > QAS Ltd. > Developers of QuickAddress Software > http://www.qas.com";>www.qas.com > Registered in England: No 2582055 > Registered in Australia: No 082 851 474 > --- > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --
RE: Why is tomcat (java) so memory intensive?
our production server has been on 5.5.4 for a few weeks and performing very nicely. 5.5.4 is the latest stable build for 5.5 series. give it a shot on your development server if you have one. > -Original Message- > From: Dakota Jack [mailto:[EMAIL PROTECTED] > Sent: 21 December 2004 16:45 > To: Tomcat Users List > Subject: Re: Why is tomcat (java) so memory intensive? > > > Is there any reason not to upgrade to 5.5? Is that ready for prime > time? Thanks. > > Jack > > > On Tue, 21 Dec 2004 16:06:13 -, Allistair Crossley > <[EMAIL PROTECTED]> wrote: > > i think (from memory) it had to do with registering > requests with jk. anyway, like i say, upgrade and you'll see > that leak go away i am pretty sure. > > > > > -Original Message- > > > From: Allistair Crossley > > > Sent: 21 December 2004 16:00 > > > To: Tomcat Users List; [EMAIL PROTECTED] > > > Subject: RE: Why is tomcat (java) so memory intensive? > > > > > > > > > you are right, tomcat 5.0.19 did have a memory leak. some > > > dispute it, but it is there, i had it also and used a > > > profiler to show it. you should upgrade to 5.0.28. > > > > > > Allistair. > > > > > > > -Original Message- > > > > From: Philippe Deslauriers [mailto:[EMAIL PROTECTED] > > > > Sent: 21 December 2004 15:47 > > > > To: Tomcat Users List; [EMAIL PROTECTED] > > > > Subject: RE: Why is tomcat (java) so memory intensive? > > > > > > > > > > > > > > > > Actually no, I tough it was 256Mb. Thanks. > > > > It will go out of memory around 125Mb 140Mb in the task > > > > manager. It depends. > > > > > > > > But your point just prove my problem to be even stanger: if > > > > 64 Mb shoulb be > > > > the limit > > > > where did the other 60Mb+ go? (the JVM itself never takes > > > > that much memory, > > > > not from my experience). > > > > > > > > What I did not mention in the orgininal post is that I have > > > > the same problem > > > > with an app running on 5.0.18 sam jdk, using -Xms256m > > > > -Xmx1024m, it will > > > > also run OOM, and again profiling the app did not show any > > > > leak, and a large > > > > gap between the total heap and whatever the task manger reports. > > > > > > > > My main issue here is where does the gap come from? > > > > > > > > > > > > -Original Message- > > > > From: Christoph Kutzinski [mailto:[EMAIL PROTECTED] > > > > Sent: Tuesday, December 21, 2004 10:22 AM > > > > To: Tomcat Users List > > > > Subject: Re: Why is tomcat (java) so memory intensive? > > > > > > > > > > > > Philippe Deslauriers wrote: > > > > > I am using Tomcat 5.0.19 on Windows XP SP2, J2SDK 1.4.2_03. > > > > > > > > > > I have a serious memory problem with Tomcat, it just EAT > > > > memory without > > > > > explanation, until OOM error occurs. > > > > > > > > > > The Java.exe process in the windows task manager reports > > > > using between > > > > 95Mb > > > > > and 105Mb after the startup of the webapp. I do not use Xms > > > > Xmx options in > > > > > dev mode. > > > > > > > > You do know that the VM will only allocate 64 mb for heap > > > if you don't > > > > use the Xmx option, do you? > > > > After the 64 mb are used up the vm will throw an oom error. > > > > How much memory does the taskmanager report before the oom > > > > error happens? > > > > > > > > > > > > Christoph > > > > > > > > > > > > - > > > > To unsubscribe, e-mail: > [EMAIL PROTECTED] > > > > For additional commands, e-mail: > [EMAIL PROTECTED] > > > > > > > > > > > > > > > > > > > > - > > > > To unsubscribe, e-mail: > [EMAIL PROTECTED] > > > > For additional commands, e-mail: > [EMAIL PROTECTED] > > > > > > > > > > > > > > > > > > > > --- > > > QAS Ltd. > > > Developers of QuickAddress Software > > > http://www.qas.com";>www.qas.com > > > Registered in England: No 2582055 > > > Registered in Australia: No 082 851 474 > > > --- > > > > > > > > > > > > > - > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: > [EMAIL PROTECTED] > > > > > > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > -- > "You can lead a horse to water but you cannot make it float > on its back." > > ~Dakota Jack~ > > "You can't wake a person who is pretending to be asleep." > > ~Native Proverb~ > > "Each man is good in His sight. It is not necessary for > eagles to be crows." > > ~Hunkesni (Sitting Bull), Hunkpapa Sioux~ > > --- > > "This message may contain confidential and/or privileged information. > If you are not the addressee or aut
Tomcat 5, jk2, Apache 2 and mixed name/IP virtual hosts
I just found the problem, my apologies, it turns out to be a firewall port block upstream from me. Thank You, Troy - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Tomcat 4.1 DBCP DB2 Problem
Hi;
this is my first post, and i apprecciate a lot your help.
We have a Tomcat Application Server 4.1.30, Sun JVM 1.4.2_05
in W2K server (512 ram) connected to a DB2 6.X resident in a IBM/390.
The web application performs several access to the DB2 for each user. We
have normally
200 connections to the database. The application acesses lots of BLOB
registries in those connections.
We use a connection pool of 400 connections at maximum.
It performs well most of the time. But sometimes when the load is heavy
(it is happening more or less each week),
like 20 users at a time, Tomcat does not show any error but leaves a
lock in the BLOB table without commit for
hours, we realize there is a problem when we see time out errors in the
logs of tomcat.
What happens next is that there is no way to release that lock on the
BLOB table, even
if we shutdown the w2k server the lock remains in the DB2.
The only way is to kill the DB2 thread in the DB2 server in the IBM/390
or bring down DDF. After that, the web application
can access the blob registry that was unaccessible without restarting
tomcat.
We have been unable to repeat the problem in the development site. Even
on the same machine.
The server is not full in cpu processor, nor the database has any
problem (apparently). Some
other applications use the database without problem.
I would greatly appreciatte somebody here can give me a hint about any
of this. This is a critical application for us.
My manager is even thinking of replacing Tomcat with WAS 5.0 from IBM.
But i dont think that would solve the problem.
this is my server.xml: (PSDRS7B is production, DB2TEST is development)
thank you for reading, i know is too long.
-
factory
org.apache.catalina.users.MemoryUserDatabaseFactory
pathname
conf/tomcat-users.xml
factory
org.apache.commons.dbcp.BasicDataSourceFactory
url
jdbc:odbc:PSDRS7B
validationQuery
SELECT CODIGOSOLUCION FROM PSDRS7B.RESPUEST
maxIdle
200
maxActive
500
driverClassName
sun.jdbc.odbc.JdbcOdbcDriver
maxWait
-1
removeAbandoned
true
username
VM6GSR2
logAbandoned
true
removeAbandonedTimeout
10
password
WEBF1RE
factory
org.apache.commons.dbcp.BasicDataSourceFactory
validationQuery
SELECT CODIGOSOLUCION FROM TSDRS7B.RESPUEST
maxWait
-1
maxActive
500
password
ESTH3R
url
jdbc:odbc:DB2TEST
driverClassName
sun.jdbc.odbc.JdbcOdbcDriver
maxIdle
200
username
VM6GLC1
removeAbandoned
true
logAbandoned
true
removeAbandonedTimeout
10
directory="logs" prefix="localhost_access_log."
suffix=".txt"
pattern="common"/>
-
this is my web.xml:
-
http://java.sun.com/dtd/web-app_2_3.dtd";>
ConsultaS7B
ConsultaS7B
ConsultaS7B
rservlets.ConsultaS7B
(like 100 servlets)
ConsultaS7B
/servlet/rservlets.ConsultaS7B
(the same 100 servlets ...)
3600
snp
www/unknown
login.html
-
this the java file that access the database:
-
package rhost;
/**
* Clase que contiene la lógica para la conexión y solicitud de información
* al IBM/390 y JDBC
*/
import javax.naming.*;
import javax.sql.*;
import java.io.*;
import java.util.*;
import java.sql.*;
public class ConectaBD{
//Conexión a la Base de Datos
private String fieldContextDB = null;
private Connection fieldConexionDB = null;
private String fieldDriverDB = null;
private String fieldUrlDB = null;
private String fieldUsuarioDB = null;
private String fieldClaveDB = null;
p
RE: Why is tomcat (java) so memory intensive?
I think that's only with JDK 1.3 though -Original Message- From: Dakota Jack [mailto:[EMAIL PROTECTED] Sent: 21 December 2004 16:40 To: Tomcat Users List Subject: Re: Why is tomcat (java) so memory intensive? Why, then, does the Tomcat 5.0 say in the RELEASE-NOTES "JAVAC leaking memory" is an issue? On Tue, 21 Dec 2004 16:06:13 -, Allistair Crossley <[EMAIL PROTECTED]> wrote: > i think (from memory) it had to do with registering requests with jk. anyway, > like i say, upgrade and you'll see that leak go away i am pretty sure. > > > -Original Message- > > From: Allistair Crossley > > Sent: 21 December 2004 16:00 > > To: Tomcat Users List; [EMAIL PROTECTED] > > Subject: RE: Why is tomcat (java) so memory intensive? > > > > > > you are right, tomcat 5.0.19 did have a memory leak. some > > dispute it, but it is there, i had it also and used a > > profiler to show it. you should upgrade to 5.0.28. > > Thanks, Jack -- "You can lead a horse to water but you cannot make it float on its back." ~Dakota Jack~ "You can't wake a person who is pretending to be asleep." ~Native Proverb~ "Each man is good in His sight. It is not necessary for eagles to be crows." ~Hunkesni (Sitting Bull), Hunkpapa Sioux~ --- "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Any opinions expressed in this E-mail may be those of the individual and not necessarily the company. This E-mail and any files transmitted with it are confidential and solely for the use of the intended recipient. If you are not the intended recipient or the person responsible for delivering to the intended recipient, be advised that you have received this E-mail in error and that any use or copying is strictly prohibited. If you have received this E-mail in error please notify the beCogent postmaster at [EMAIL PROTECTED] Unless expressly stated, opinions in this email are those of the individual sender and not beCogent Ltd. You must take full responsibility for virus checking this email and any attachments. Please note that the content of this email or any of its attachments may contain data that falls within the scope of the Data Protection Acts and that you must ensure that any handling or processing of such data by you is fully compliant with the terms and provisions of the Data Protection Act 1984 and 1998. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
of course you can ... look up http://jakarta.apache.org/commons/dbcp/ and commons-pool or your database's driver may even have an implementation that supports pooling that you can instantiate directly with the javax.sql or java.sql api. cron(30s) --> socket call --> your app (ServerSocket) --> spawn some new handler thread call database (dbcp e.g) --> get reply call client via xmlrpc get reply call database delete handler thread or put back into a pool ServerSocket wait > -Original Message- > From: Shilpa Nalgonda [mailto:[EMAIL PROTECTED] > Sent: 21 December 2004 16:41 > To: Tomcat Users List; Billy Talton > Subject: RE: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > My application has to use the connection pooling of Tomcat to > talk to the > database... > and all my Database access classes are deployed om > Tomcat...so if i just > write a java standalone command line program, > can i access those connection pooling classes... > > -Original Message- > From: Billy Talton [mailto:[EMAIL PROTECTED] > Sent: Tuesday, December 21, 2004 11:41 AM > To: Tomcat Users List > Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > Why are you writing a servlet for this? If the application does not > use any of the services confined to the Servlet API and Tomcat, just > write a stand-alone application and setup up a cron job to run it. > Seems like overkill to me. > > > On Tue, 21 Dec 2004 16:28:49 -, Allistair Crossley > <[EMAIL PROTECTED]> wrote: > > no, and I believe doing so it bad practice. use some OS > controlled timer > like cron to issue a HTTP call to your servlet. I once wrote > a shell script > that calls a http address on the local machine but cannot > remember how ;) if > you are using oracle then you can setup this timer thread inside the > database itself. don't add a thread into your web application. > > > > > -Original Message- > > > From: Shilpa Nalgonda [mailto:[EMAIL PROTECTED] > > > Sent: 21 December 2004 16:14 > > > To: Tomcat Users List > > > Subject: RE: How to run servlet for every 30 minutes in > Tomcat 4.1.30 > > > > > > > > > Thanks for the reply... > > > > > > The application which i am trying to write is a standalone > > > utility.. Client > > > does not hit this servlet. > > > > > > Instead my application which is a servlet, will make some > > > database calls-- > > > and if the required data is present in the database, then > > > that data is sent > > > to the client via xmlrpc call and the response from the > xmlrpc call is > > > updated back into the dataabse. > > > > > > So we want this utility preferably servlet in our Tomcat > > > container to be run > > > every 30 minutes like a cron job, to do the database updates.. > > > > > > There are so many other classes deployed on Tomcat and i want > > > to use those > > > classes to write this servlet utility. > > > This is the reason why chose to use servlet, but is there any > > > configurable > > > parameter to run servlet for every 30 minutes... > > > > > > -Original Message- > > > From: Wade Chandler [mailto:[EMAIL PROTECTED] > > > Sent: Tuesday, December 21, 2004 11:03 AM > > > To: Tomcat Users List > > > Subject: Re: How to run servlet for every 30 minutes in > Tomcat 4.1.30 > > > > > > > > > Shilpa Nalgonda wrote: > > > > Hi, > > > > I am using Tomcat4.1.30 version. > > > > I have to develop a client application which looks in the > > > database every > > > 30 > > > > minutes, > > > > to retrieve the status of an order and send the status > to the remote > > > client. > > > > Again waits for the > > > > The client's response and insert the repsonse back to > the database. > > > > > > > > I wanted to do this in a servlet, so is there any way that > > > i could run > > > this > > > > servlet automatically inside the > > > > Tomcat container, or is it configurable in servlet mapping? > > > if so can > > > > someone please suggest me with examples... > > > > > > > > > > > > > > > > - > > > > To unsubscribe, e-mail: > [EMAIL PROTECTED] > > > > For additional commands, e-mail: > [EMAIL PROTECTED] > > > > > > > > > > > > > > > > > > Wellit's kind of not extremely clear what you are > asking, but why > > > does the servlet need to do anything except listen for a > > > client which is > > > threaded to do this every 30 minutes, in other words...why > > > not have the > > > servlet do what it naturally does...sit there and get hit > by client > > > requestsget the infoand send it back? I > mean...the servlet > > > can't push to the client unless you want to use something > > > besides http, > > > or unless you are using servlets on both ends and http > servers on both > > > ends. You could use keep alives I guess.I wouldn't > thoughonly > > > so many tcp/ip connections. > > > > > >
HTTP Status 404 - /admin && HTTP Status 404 - /manager/html
Configured tomcat.5.0.27/apache2.x/mod_jk2.so After configuration my "admin" and "manager" application stoped working. -- Dwayne A. Ghant Application Developer Temple University 215.204. [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
Hi, I'm having a similar problem in my application. I've got several servlets called by the users. Every requets save some information in DB, that has to be sent to another server later and in a compress format. So I need sth similar toShilpa is asking, a process which runs every X minutes to recover the information and send it to the Server. My solution to this problem was to implement a "ServletContextListener" inside Tomcat. When Tomcat starts my application the "contextInitialized" method is called, and then a thread is started to do the task explained above. I use "Thread.sleep(step)" to wait for the next execution. I didn't find anyway to set a timer for a servlet, and I didn't like the option of creating an external script . Any other suggestions to solver this problem? Thanks Jorge Ben Souther wrote: On Tue, 2004-12-21 at 11:28, Allistair Crossley wrote: no, and I believe doing so it bad practice. use some OS controlled timer like cron to issue a HTTP call to your servlet. I once wrote a shell script that calls a http address on the local machine but cannot remember how ;) if you are using oracle then you can setup this timer thread inside the database itself. don't add a thread into your web application. I concur. It's certainly possible to write a treaded java object that fires a command every so often but there would be no point in making that object a servlet (servlets exist to answer client requests). It's also, IMHO, more aggravation than it's worth to manage your own daemon threads in a webapp. It would take all of 2 minutes to write a timer with crontab and wget that could call your servlet whenever you want. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
AW: performance issue with JK und IIS6
> You just must love Microsoft engineers just for that statement. > One has to make something like that, and then dare to say it's > a better product then before :). I neither love nor hate MS or any other company or product. I was just looking for a solution to my issue. > You a using IIS5 compatibility mode correct? Does compatibility mode mean checking the option "Execute WWW service in IIS5 isolation mode" in the IIS console? I tried this option but that changed anything. Michael - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Tomcat 4 + JK
Hi, i have a (perhaps stupid) question. In my server.xml i defined for the Coyote/JK2 AJP 1.3 Connector minProcessors="100" maxProcessors="200" Simple question: I don't understand the meaning for these parameters: they do not what i expect. I thought these were the minimum and maximum number of processors/processes used by the jk-connector But when i execute ps -auwx | grep 'tomcat' i see 260 processes (all pretty identical) What is going on, what are these parameters actually doing? kind regards -- Pieter Vandepitte Toledo KULeuven / LUDIT De Croylaan 52 A 3001 Heverlee 016 32 22 51 [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] Java developer friendly Linux distro
On Tuesday 21 December 2004 16:13, Andreas Vombach wrote: > .. has somebody experience with gcj? On RHEL eclipse (but only 2.1.2) > works with it and it looks faster than with Sun jdk. gcj could be also > an option for tomcat, I'll try as soon I have time for it ... There was a note that the most recent version of SableVM runs Eclipse and Tomcat. Given that most of the problems were not in the JVM but in the class library, that bodes well for gcj running both shortly. David - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
myself and ben have suggested the most appropriate methods for doing this. Ben mentions WGET http://www.gnu.org/software/wget/wget.html which can be added to a *basic* script hooked up to a cron with an interval of whatever you like. you really ought to get rid of threads and thread sleeps inside web application code. Allistair. > -Original Message- > From: Jorge Sopena [mailto:[EMAIL PROTECTED] > Sent: 21 December 2004 17:15 > To: Tomcat Users List > Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > Hi, > I'm having a similar problem in my application. > I've got several servlets called by the users. Every requets > save some > information in DB, that has to be sent to another server > later and in a > compress format. > So I need sth similar toShilpa is asking, a process which > runs every X > minutes to recover the information and send it to the Server. > > My solution to this problem was to implement a > "ServletContextListener" > inside Tomcat. > When Tomcat starts my application the "contextInitialized" method is > called, and then a thread is started to do the task explained above. > I use "Thread.sleep(step)" to wait for the next execution. > > I didn't find anyway to set a timer for a servlet, and I > didn't like the > option of creating an external script . > > Any other suggestions to solver this problem? > > Thanks > > Jorge > > > Ben Souther wrote: > > >On Tue, 2004-12-21 at 11:28, Allistair Crossley wrote: > > > > > >>no, and I believe doing so it bad practice. use some OS > controlled timer like cron to issue a HTTP call to your > servlet. I once wrote a shell script that calls a http > address on the local machine but cannot remember how ;) if > you are using oracle then you can setup this timer thread > inside the database itself. don't add a thread into your web > application. > >> > >> > >> > > > >I concur. It's certainly possible to write a treaded java object that > >fires a command every so often but there would be no point in making > >that object a servlet (servlets exist to answer client requests). > >It's also, IMHO, more aggravation than it's worth to manage your own > >daemon threads in a webapp. > > > >It would take all of 2 minutes to write a timer with crontab and wget > >that could call your servlet whenever you want. > > > > > >- > >To unsubscribe, e-mail: [EMAIL PROTECTED] > >For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > --- QAS Ltd. Developers of QuickAddress Software http://www.qas.com";>www.qas.com Registered in England: No 2582055 Registered in Australia: No 082 851 474 --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
No matter what i do, the JNDI lookup is returning null. What causes a
JNDI lookup to return null when the resource is defined in the
section of server.xml? Should I put the
resources into in my context.xml?
On Mon, 20 Dec 2004 13:52:29 -0500, David Uctaa <[EMAIL PROTECTED]> wrote:
> I am running Tomcat 5.0.28 on Win XP SP1. We have DB2 running on 2
> iSeries servers. When I attempt to look up a DataSource from JNDI to
> get a connection from it, the JNDI lookup is returning null.
>
> I am using IBM's JTOpen library for the JDBC drivers, and I am
> attempting to use Tomcat to manage the connection pooling. I am
> following the instructions I saw listed here:
> http://www.itjungle.com/fhg/fhg060204-story01.html . I am trying the
> first option, using the Commons DBCP connection pool.
>
> I have attached copies of my server.xml and the context configuration
> file webappname.xml. The code I am using to access the data source is
> pretty generic:
>
> Context initCtx = new InitialContext();
> Context ctx = (Context) initCtx.lookup("java:comp/env");
> DataSource ds = (DataSource) ctx.lookup("jdbc/myFirstDataSource");
> Connection conn = ds.getConnection();
>
> It turns out the that ctx.lookup call is returning null, as if it
> can't find the JNDI resource, and I can't figure out what I have
> misconfigured.
>
> Any and all help will be greatly appreciated.
>
>
>
-
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Re: AW: performance issue with JK und IIS6
Michael Südkamp wrote: You just must love Microsoft engineers just for that statement. One has to make something like that, and then dare to say it's a better product then before :). I neither love nor hate MS or any other company or product. I was just looking for a solution to my issue. Me neither. But they could at least drop a note from that KB into MSDN. You a using IIS5 compatibility mode correct? Does compatibility mode mean checking the option "Execute WWW service in IIS5 isolation mode" in the IIS console? I tried this option but that changed anything. Yes. Seems that you'll have to tweak the Registry then. Let me know if you found a solution, and I'll put it inside the docs. BTW, I hope we'll have a native IIS6 connector around February next year. Mladen. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
Use cron in Unix/Linux or task scheduler in Windows. >>> [EMAIL PROTECTED] 12-21-2004 08:44 >>> Hi, I am using Tomcat4.1.30 version. I have to develop a client application which looks in the database every 30 minutes, to retrieve the status of an order and send the status to the remote client. Again waits for the The client's response and insert the repsonse back to the database. I wanted to do this in a servlet, so is there any way that i could run this servlet automatically inside the Tomcat container, or is it configurable in servlet mapping? if so can someone please suggest me with examples... - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
External scripts really are the best answer for this. It is not possible to 'PUSH' information like this without a dedicated client! >>> [EMAIL PROTECTED] 12-21-2004 10:14 >>> Hi, I'm having a similar problem in my application. I've got several servlets called by the users. Every requets save some information in DB, that has to be sent to another server later and in a compress format. So I need sth similar toShilpa is asking, a process which runs every X minutes to recover the information and send it to the Server. My solution to this problem was to implement a "ServletContextListener" inside Tomcat. When Tomcat starts my application the "contextInitialized" method is called, and then a thread is started to do the task explained above. I use "Thread.sleep(step)" to wait for the next execution. I didn't find anyway to set a timer for a servlet, and I didn't like the option of creating an external script . Any other suggestions to solver this problem? Thanks Jorge Ben Souther wrote: >On Tue, 2004-12-21 at 11:28, Allistair Crossley wrote: > > >>no, and I believe doing so it bad practice. use some OS controlled timer like cron to issue a HTTP call to your servlet. I once wrote a shell script that calls a http address on the local machine but cannot remember how ;) if you are using oracle then you can setup this timer thread inside the database itself. don't add a thread into your web application. >> >> >> > >I concur. It's certainly possible to write a treaded java object that >fires a command every so often but there would be no point in making >that object a servlet (servlets exist to answer client requests). >It's also, IMHO, more aggravation than it's worth to manage your own >daemon threads in a webapp. > >It would take all of 2 minutes to write a timer with crontab and wget >that could call your servlet whenever you want. > > >- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] > > > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
Why is bad using own threads inside web application? Aren't all the servlet request actually a thread in Tomcat? I can't find a reason why it's so bad solution. In that way, you manage to have a single and independent application. Maybe I don't know some thread behaviour in Tomcat... Jorge. Allistair Crossley wrote: myself and ben have suggested the most appropriate methods for doing this. Ben mentions WGET http://www.gnu.org/software/wget/wget.html which can be added to a *basic* script hooked up to a cron with an interval of whatever you like. you really ought to get rid of threads and thread sleeps inside web application code. Allistair. -Original Message- From: Jorge Sopena [mailto:[EMAIL PROTECTED] Sent: 21 December 2004 17:15 To: Tomcat Users List Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 Hi, I'm having a similar problem in my application. I've got several servlets called by the users. Every requets save some information in DB, that has to be sent to another server later and in a compress format. So I need sth similar toShilpa is asking, a process which runs every X minutes to recover the information and send it to the Server. My solution to this problem was to implement a "ServletContextListener" inside Tomcat. When Tomcat starts my application the "contextInitialized" method is called, and then a thread is started to do the task explained above. I use "Thread.sleep(step)" to wait for the next execution. I didn't find anyway to set a timer for a servlet, and I didn't like the option of creating an external script . Any other suggestions to solver this problem? Thanks Jorge Ben Souther wrote: On Tue, 2004-12-21 at 11:28, Allistair Crossley wrote: no, and I believe doing so it bad practice. use some OS controlled timer like cron to issue a HTTP call to your servlet. I once wrote a shell script that calls a http address on the local machine but cannot remember how ;) if you are using oracle then you can setup this timer thread inside the database itself. don't add a thread into your web application. I concur. It's certainly possible to write a treaded java object that fires a command every so often but there would be no point in making that object a servlet (servlets exist to answer client requests). It's also, IMHO, more aggravation than it's worth to manage your own daemon threads in a webapp. It would take all of 2 minutes to write a timer with crontab and wget that could call your servlet whenever you want. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --- QAS Ltd. Developers of QuickAddress Software http://www.qas.com";>www.qas.com Registered in England: No 2582055 Registered in Australia: No 082 851 474 --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- == Jorge Sopena Torres SIDSA (Semiconductores Investigación y Diseño, S.A.) Parque Tecnológico de Madrid c/ Torres Quevedo, nº 1 28760 TRES CANTOS (Madrid) (SPAIN) Phone : +34 91 803 5052 Fax:+34 91 803 9557 e-mail: [EMAIL PROTECTED] URL: http://www.sidsa.com ==
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
I would say it should be avoided at all if possible using threads. Since as we know in case of threads, there is not much management you can do. Also in my experience i have seen it is very easy for them to get out of control . So if there are any other alternatives, They should be explored first before threads. I am not sure if Tomcat supports MBeans, But I remeber in JBOss, you could create MBeans and schedule them in the container. Pandu From: Jorge Sopena <[EMAIL PROTECTED]> Reply-To: "Tomcat Users List" <[EMAIL PROTECTED]> To: Tomcat Users List <[EMAIL PROTECTED]> Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 Date: Tue, 21 Dec 2004 18:58:23 +0100 Why is bad using own threads inside web application? Aren't all the servlet request actually a thread in Tomcat? I can't find a reason why it's so bad solution. In that way, you manage to have a single and independent application. Maybe I don't know some thread behaviour in Tomcat... Jorge. Allistair Crossley wrote: myself and ben have suggested the most appropriate methods for doing this. Ben mentions WGET http://www.gnu.org/software/wget/wget.html which can be added to a *basic* script hooked up to a cron with an interval of whatever you like. you really ought to get rid of threads and thread sleeps inside web application code. Allistair. -Original Message- From: Jorge Sopena [mailto:[EMAIL PROTECTED] Sent: 21 December 2004 17:15 To: Tomcat Users List Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 Hi, I'm having a similar problem in my application. I've got several servlets called by the users. Every requets save some information in DB, that has to be sent to another server later and in a compress format. So I need sth similar toShilpa is asking, a process which runs every X minutes to recover the information and send it to the Server. My solution to this problem was to implement a "ServletContextListener" inside Tomcat. When Tomcat starts my application the "contextInitialized" method is called, and then a thread is started to do the task explained above. I use "Thread.sleep(step)" to wait for the next execution. I didn't find anyway to set a timer for a servlet, and I didn't like the option of creating an external script . Any other suggestions to solver this problem? Thanks Jorge Ben Souther wrote: On Tue, 2004-12-21 at 11:28, Allistair Crossley wrote: no, and I believe doing so it bad practice. use some OS controlled timer like cron to issue a HTTP call to your servlet. I once wrote a shell script that calls a http address on the local machine but cannot remember how ;) if you are using oracle then you can setup this timer thread inside the database itself. don't add a thread into your web application. I concur. It's certainly possible to write a treaded java object that fires a command every so often but there would be no point in making that object a servlet (servlets exist to answer client requests). It's also, IMHO, more aggravation than it's worth to manage your own daemon threads in a webapp. It would take all of 2 minutes to write a timer with crontab and wget that could call your servlet whenever you want. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --- QAS Ltd. Developers of QuickAddress Software http://www.qas.com";>www.qas.com Registered in England: No 2582055 Registered in Australia: No 082 851 474 --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- == Jorge Sopena Torres SIDSA (Semiconductores Investigación y Diseño, S.A.) Parque Tecnológico de Madrid c/ Torres Quevedo, nº 1 28760 TRES CANTOS (Madrid) (SPAIN) Phone : +34 91 803 5052 Fax:+34 91 803 9557 e-mail: [EMAIL PROTECTED] URL: http://www.sidsa.com == - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
Check out QuartzScheduler from Open Symphony it's easy to configure within Tomcat. Fredrik -Original Message- From: pandu yelamanchili [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 21, 2004 9:58 AM To: [EMAIL PROTECTED] Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 I would say it should be avoided at all if possible using threads. Since as we know in case of threads, there is not much management you can do. Also in my experience i have seen it is very easy for them to get out of control . So if there are any other alternatives, They should be explored first before threads. I am not sure if Tomcat supports MBeans, But I remeber in JBOss, you could create MBeans and schedule them in the container. Pandu >From: Jorge Sopena <[EMAIL PROTECTED]> >Reply-To: "Tomcat Users List" <[EMAIL PROTECTED]> >To: Tomcat Users List <[EMAIL PROTECTED]> >Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 >Date: Tue, 21 Dec 2004 18:58:23 +0100 > >Why is bad using own threads inside web application? >Aren't all the servlet request actually a thread in Tomcat? >I can't find a reason why it's so bad solution. >In that way, you manage to have a single and independent application. > >Maybe I don't know some thread behaviour in Tomcat... > >Jorge. > > >Allistair Crossley wrote: > >>myself and ben have suggested the most appropriate methods for doing >>this. >>Ben mentions WGET http://www.gnu.org/software/wget/wget.html which can be >>added to a *basic* script hooked up to a cron with an interval of whatever >>you like. >> >>you really ought to get rid of threads and thread sleeps inside web >>application code. >> >>Allistair. >> >> >> >>>-Original Message- >>>From: Jorge Sopena [mailto:[EMAIL PROTECTED] >>>Sent: 21 December 2004 17:15 >>>To: Tomcat Users List >>>Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 >>> >>> >>>Hi, >>>I'm having a similar problem in my application. >>>I've got several servlets called by the users. Every requets save >>>some >>>information in DB, that has to be sent to another server later and in a >>>compress format. >>>So I need sth similar toShilpa is asking, a process which runs every X >>>minutes to recover the information and send it to the Server. >>> >>>My solution to this problem was to implement a >>>"ServletContextListener" >>>inside Tomcat. >>>When Tomcat starts my application the "contextInitialized" method is >>>called, and then a thread is started to do the task explained above. >>>I use "Thread.sleep(step)" to wait for the next execution. >>> >>>I didn't find anyway to set a timer for a servlet, and I didn't like >>>the >>>option of creating an external script . >>> >>>Any other suggestions to solver this problem? >>> >>>Thanks >>> >>>Jorge >>> >>> >>>Ben Souther wrote: >>> >>> >>> On Tue, 2004-12-21 at 11:28, Allistair Crossley wrote: >no, and I believe doing so it bad practice. use some OS > >>>controlled timer like cron to issue a HTTP call to your servlet. I >>>once >>>wrote a shell script that calls a http address on the local machine but >>>cannot remember how ;) if you are using oracle then you can setup this >>>timer thread inside the database itself. don't add a thread into your web >>>application. >>> >>> > > > > I concur. It's certainly possible to write a treaded java object that fires a command every so often but there would be no point in making that object a servlet (servlets exist to answer client requests). It's also, IMHO, more aggravation than it's worth to manage your own daemon threads in a webapp. It would take all of 2 minutes to write a timer with crontab and wget that could call your servlet whenever you want. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] >>> >>> >> >> >> >>--- >>QAS Ltd. >>Developers of QuickAddress Software >>http://www.qas.com";>www.qas.com >>Registered in England: No 2582055 >>Registered in Australia: No 082 851 474 >>--- >> >> >> >>- >>To unsubscribe, e-mail: [EMAIL PROTECTED] >>For additional commands, e-mail: [EMAIL PROTECTED] >> >> >> >> > >-- == >Jorge Sopena Torres >SIDSA >(Semiconductores Investigación y Diseño, S.A.) > >Parque Tecnológico de Madrid >c/ Torres Quevedo, nº 1 >28760 TRES CANTOS (Madrid) (SPAIN) > >Phone : +34 91 803 5052 >Fax:+34 91 803 9557 > >e-mail: [EMAIL PROTECTED] >URL: http://www.sidsa.com > >== > --
RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
You may user a scheduler to schedule your tasks to run every 30 minutes. http://www.theserverside.com/blogs/printfriendly.tss?id=QuartzSchedulerInJ2E E http://www.quartzscheduler.org/quartz/. Peiyun -Original Message- From: Wade Chandler [mailto:[EMAIL PROTECTED] Sent: December 21, 2004 11:03 AM To: Tomcat Users List Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 Shilpa Nalgonda wrote: > Hi, > I am using Tomcat4.1.30 version. > I have to develop a client application which looks in the database every 30 > minutes, > to retrieve the status of an order and send the status to the remote client. > Again waits for the > The client's response and insert the repsonse back to the database. > > I wanted to do this in a servlet, so is there any way that i could run this > servlet automatically inside the > Tomcat container, or is it configurable in servlet mapping? if so can > someone please suggest me with examples... > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > Wellit's kind of not extremely clear what you are asking, but why does the servlet need to do anything except listen for a client which is threaded to do this every 30 minutes, in other words...why not have the servlet do what it naturally does...sit there and get hit by client requestsget the infoand send it back? I mean...the servlet can't push to the client unless you want to use something besides http, or unless you are using servlets on both ends and http servers on both ends. You could use keep alives I guess.I wouldn't thoughonly so many tcp/ip connections. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
What is the resourcelink in your context.xml?
-Original Message-
From: David Uctaa [mailto:[EMAIL PROTECTED]
Sent: December 21, 2004 12:27 PM
To: [EMAIL PROTECTED]
Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
No matter what i do, the JNDI lookup is returning null. What causes a JNDI
lookup to return null when the resource is defined in the
section of server.xml? Should I put the resources
into in my context.xml?
On Mon, 20 Dec 2004 13:52:29 -0500, David Uctaa <[EMAIL PROTECTED]> wrote:
> I am running Tomcat 5.0.28 on Win XP SP1. We have DB2 running on 2
> iSeries servers. When I attempt to look up a DataSource from JNDI to
> get a connection from it, the JNDI lookup is returning null.
>
> I am using IBM's JTOpen library for the JDBC drivers, and I am
> attempting to use Tomcat to manage the connection pooling. I am
> following the instructions I saw listed here:
> http://www.itjungle.com/fhg/fhg060204-story01.html . I am trying the
> first option, using the Commons DBCP connection pool.
>
> I have attached copies of my server.xml and the context configuration
> file webappname.xml. The code I am using to access the data source is
> pretty generic:
>
> Context initCtx = new InitialContext();
> Context ctx = (Context) initCtx.lookup("java:comp/env"); DataSource ds
> = (DataSource) ctx.lookup("jdbc/myFirstDataSource");
> Connection conn = ds.getConnection();
>
> It turns out the that ctx.lookup call is returning null, as if it
> can't find the JNDI resource, and I can't figure out what I have
> misconfigured.
>
> Any and all help will be greatly appreciated.
>
>
>
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Re: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
If the name of the global resource in server.xml is defined as
...
then the resourcelink in context.xml is
(not sure if listing the exact datasource specification would be a
security breach, so I'm munging the actual datasource name, but
everything else is the same, including upper/lower case)
On Tue, 21 Dec 2004 13:39:07 -0500, Phillip Qin
<[EMAIL PROTECTED]> wrote:
> What is the resourcelink in your context.xml?
>
>
> -Original Message-
> From: David Uctaa [mailto:[EMAIL PROTECTED]
> Sent: December 21, 2004 12:27 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
>
> No matter what i do, the JNDI lookup is returning null. What causes a JNDI
> lookup to return null when the resource is defined in the
> section of server.xml? Should I put the resources
> into in my context.xml?
>
> On Mon, 20 Dec 2004 13:52:29 -0500, David Uctaa <[EMAIL PROTECTED]> wrote:
> > I am running Tomcat 5.0.28 on Win XP SP1. We have DB2 running on 2
> > iSeries servers. When I attempt to look up a DataSource from JNDI to
> > get a connection from it, the JNDI lookup is returning null.
> >
> > I am using IBM's JTOpen library for the JDBC drivers, and I am
> > attempting to use Tomcat to manage the connection pooling. I am
> > following the instructions I saw listed here:
> > http://www.itjungle.com/fhg/fhg060204-story01.html . I am trying the
> > first option, using the Commons DBCP connection pool.
> >
> > I have attached copies of my server.xml and the context configuration
> > file webappname.xml. The code I am using to access the data source is
> > pretty generic:
> >
> > Context initCtx = new InitialContext();
> > Context ctx = (Context) initCtx.lookup("java:comp/env"); DataSource ds
> > = (DataSource) ctx.lookup("jdbc/myFirstDataSource");
> > Connection conn = ds.getConnection();
> >
> > It turns out the that ctx.lookup call is returning null, as if it
> > can't find the JNDI resource, and I can't figure out what I have
> > misconfigured.
> >
> > Any and all help will be greatly appreciated.
> >
> >
> >
>
> -
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> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
> !DSPAM:41c85cd9295551913319955!
>
>
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Re: HTTP Status 404 - /admin && HTTP Status 404 - /manager/html
I know that someone ran into this before. I assume that most of this list thinks this questions is stupid and you are probably correct; so please accept my apologeis. But that doesn't stop me from needing assistance. Thank you for your time. Dwayne Ghant wrote: Configured tomcat.5.0.27/apache2.x/mod_jk2.so After configuration my "admin" and "manager" application stoped working. -- Dwayne A. Ghant Application Developer Temple University 215.204. [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Gurus! JCE and classloader question
Hello again!
Any guru around to solve my problem please? :-)
Lionel Pasquier wrote:
Hello,
I have a trouble with using a JCE and multiple contexts. From what I
could have read around here this is probably linked to a classloader
problem. Could you guys help?
Basicaly, I generate a RSA Keypair, then create a certificate and want
to self sign it. Finally i need to store the private key to create a
p12. Here is the code: I am using the IAIK JCE.
KeyPair keyPair;
IAIK IAIKprovider = new IAIK();
Security.insertProviderAt(IAIKprovider, 2);
KeyPairGenerator keyPairGenerator =
KeyPairGenerator.getInstance("RSA", IAIKprovider.getName());
keyPairGenerator.initialize(keySize);
keyPair = keyPairGenerator.generateKeyPair();
X509Certificate cert;
[...]
cert.sign( AlgorithmID.sha1WithRSAEncryption ,keyPair.getPrivate(),
IAIKprovider.getName());
if(!RSAPrivateKey.class.isAssignableFrom(keyPair.getPrivate().getClass())){
error("Generated RSA private key is not of type RSA!");
}
KeyBag keybag = new KeyBag((RSAPrivateKey) keyPair.getPrivate(),
certLabel, certLabel.getBytes());
The problem is that if I have more than one tomcat context using the
same pice of code, the 2nd context to use it triggers the "if" (that
is, without it I get a ClassCastException). Meaning that the generated
private key is not compatible with RSAPrivateKey, while I asked for a
"RSA" key.
I also have the same problem with the other way around:
CertificateFactory certFactory =
CertificateFactory.getInstance("X.509", "IAIK");
Collection certCollection = certFactory.generateCertificates(new
ByteArrayInputStream( certChainBlob.getDatabinary() ));
cert = (X509Certificate)certChain.get(0); //where X509Certificate
being iaik.x509.X509Certificate)
gets a ClassCastException if being the second context to call this code.
Oh, one more important thing: I add the security provider dynamicaly
with a:
Security.insertProviderAt(new IAIK(), 2);
Could someone help me on this?
Thank you,
Lionel
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Memory Leak with Javac and Tomcat v. 4.0.28
I was going to update my Tomcat from 4.0.19 because it says there is a javac leak in the RELEASE-NOTES. However, I noticed that 4.0.28 says the same thing. Is it fixed/ Jack -- "You can lead a horse to water but you cannot make it float on its back." ~Dakota Jack~ "You can't wake a person who is pretending to be asleep." ~Native Proverb~ "Each man is good in His sight. It is not necessary for eagles to be crows." ~Hunkesni (Sitting Bull), Hunkpapa Sioux~ --- "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Memory Leak with Javac and Tomcat v. 4.0.28
Dakota Jack wrote: I was going to update my Tomcat from 4.0.19 because it says there is a javac leak in the RELEASE-NOTES. However, I noticed that 4.0.28 says the same thing. Is it fixed/ Jack AFAIK this is no Tomcat issue but a JDK/Javac issue which was fixed in Sun JDK 1.4. See: http://www.apache.de/dist/jakarta/tomcat-5/v5.0.29/RELEASE-NOTES HTH Christoph - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Memory Leak with Javac and Tomcat v. 4.0.28
> From: Dakota Jack [mailto:[EMAIL PROTECTED] > Subject: Memory Leak with Javac and Tomcat v. 4.0.28 > > I was going to update my Tomcat from 4.0.19 because it says there is a > javac leak in the RELEASE-NOTES. However, I noticed that 4.0.28 says > the same thing. Is it fixed/ The memory leak is in the JDK, not Tomcat itself. If you use 1.4.2 or above the javac memory leak won't be a problem. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] Request an app test (free beer!)
SuSE 8.2: Linux
Mandrake 10: Linux
Mandrake 10.1: Linux
Mandrake 8.0: Linux
>
>Sent: Monday, December 20, 2004 2:26 PM
>To: Commons User; Struts User; Tomcat User
>Subject: [OT] Request an app test (free beer!)
>
>
>I was informed last OT post I made that the subject should always
>include the word "beer". I added the "free" to get your attention :)
>
>I'm working on something for which I need to know what the os.name
>property on various OS's is. I would greatly appreciate it if some
>folks could try the following:
>
>public class test {
>public static void main(String[] args) {
>System.out.println(System.getProperty("os.name"));
>}
>}
>
>I'm particularly interested in various *nix variants, Linux, Mac and
>such. Windows I already have answers for (although some verification to
>
>be sure nothing fishy is going on wouldn't hurt).
>
>If you could just post your OS and what the result was, I would greatly
>appreciate it. Thanks in advance!
>
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RE: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
I assume you have something like this in your server.xml
Is there any warning or exception in catalina.out or any other log files?
-Original Message-
From: David Uctaa [mailto:[EMAIL PROTECTED]
Sent: December 21, 2004 1:52 PM
To: Tomcat Users List
Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
If the name of the global resource in server.xml is defined as
...
then the resourcelink in context.xml is
(not sure if listing the exact datasource specification would be a security
breach, so I'm munging the actual datasource name, but everything else is
the same, including upper/lower case)
On Tue, 21 Dec 2004 13:39:07 -0500, Phillip Qin <[EMAIL PROTECTED]>
wrote:
> What is the resourcelink in your context.xml?
>
>
> -Original Message-
> From: David Uctaa [mailto:[EMAIL PROTECTED]
> Sent: December 21, 2004 12:27 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat
> 5.0.28
>
> No matter what i do, the JNDI lookup is returning null. What causes a
> JNDI lookup to return null when the resource is defined in the
> section of server.xml? Should I put the
> resources into in my context.xml?
>
> On Mon, 20 Dec 2004 13:52:29 -0500, David Uctaa <[EMAIL PROTECTED]>
> wrote:
> > I am running Tomcat 5.0.28 on Win XP SP1. We have DB2 running on 2
> > iSeries servers. When I attempt to look up a DataSource from JNDI
> > to get a connection from it, the JNDI lookup is returning null.
> >
> > I am using IBM's JTOpen library for the JDBC drivers, and I am
> > attempting to use Tomcat to manage the connection pooling. I am
> > following the instructions I saw listed here:
> > http://www.itjungle.com/fhg/fhg060204-story01.html . I am trying the
> > first option, using the Commons DBCP connection pool.
> >
> > I have attached copies of my server.xml and the context
> > configuration file webappname.xml. The code I am using to access
> > the data source is pretty generic:
> >
> > Context initCtx = new InitialContext();
> > Context ctx = (Context) initCtx.lookup("java:comp/env"); DataSource
> > ds = (DataSource) ctx.lookup("jdbc/myFirstDataSource");
> > Connection conn = ds.getConnection();
> >
> > It turns out the that ctx.lookup call is returning null, as if it
> > can't find the JNDI resource, and I can't figure out what I have
> > misconfigured.
> >
> > Any and all help will be greatly appreciated.
> >
> >
> >
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
>
>
>
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RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
You may use a scheduler to schedule your tasks to run every 30 minutes. http://www.theserverside.com/blogs/printfriendly.tss?id=QuartzSchedulerInJ2E E http://www.quartzscheduler.org/quartz/. Peiyun -Original Message- From: Shilpa Nalgonda [mailto:[EMAIL PROTECTED] Sent: December 21, 2004 11:41 AM To: Tomcat Users List; Billy Talton Subject: RE: How to run servlet for every 30 minutes in Tomcat 4.1.30 My application has to use the connection pooling of Tomcat to talk to the database... and all my Database access classes are deployed om Tomcat...so if i just write a java standalone command line program, can i access those connection pooling classes... -Original Message- From: Billy Talton [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 21, 2004 11:41 AM To: Tomcat Users List Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 Why are you writing a servlet for this? If the application does not use any of the services confined to the Servlet API and Tomcat, just write a stand-alone application and setup up a cron job to run it. Seems like overkill to me. On Tue, 21 Dec 2004 16:28:49 -, Allistair Crossley <[EMAIL PROTECTED]> wrote: > no, and I believe doing so it bad practice. use some OS controlled timer like cron to issue a HTTP call to your servlet. I once wrote a shell script that calls a http address on the local machine but cannot remember how ;) if you are using oracle then you can setup this timer thread inside the database itself. don't add a thread into your web application. > > > -Original Message- > > From: Shilpa Nalgonda [mailto:[EMAIL PROTECTED] > > Sent: 21 December 2004 16:14 > > To: Tomcat Users List > > Subject: RE: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > > > > Thanks for the reply... > > > > The application which i am trying to write is a standalone > > utility.. Client > > does not hit this servlet. > > > > Instead my application which is a servlet, will make some > > database calls-- > > and if the required data is present in the database, then > > that data is sent > > to the client via xmlrpc call and the response from the xmlrpc call is > > updated back into the dataabse. > > > > So we want this utility preferably servlet in our Tomcat > > container to be run > > every 30 minutes like a cron job, to do the database updates.. > > > > There are so many other classes deployed on Tomcat and i want > > to use those > > classes to write this servlet utility. > > This is the reason why chose to use servlet, but is there any > > configurable > > parameter to run servlet for every 30 minutes... > > > > -Original Message- > > From: Wade Chandler [mailto:[EMAIL PROTECTED] > > Sent: Tuesday, December 21, 2004 11:03 AM > > To: Tomcat Users List > > Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > > > > Shilpa Nalgonda wrote: > > > Hi, > > > I am using Tomcat4.1.30 version. > > > I have to develop a client application which looks in the > > database every > > 30 > > > minutes, > > > to retrieve the status of an order and send the status to the remote > > client. > > > Again waits for the > > > The client's response and insert the repsonse back to the database. > > > > > > I wanted to do this in a servlet, so is there any way that > > i could run > > this > > > servlet automatically inside the > > > Tomcat container, or is it configurable in servlet mapping? > > if so can > > > someone please suggest me with examples... > > > > > > > > > > > - > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > > Wellit's kind of not extremely clear what you are asking, but why > > does the servlet need to do anything except listen for a > > client which is > > threaded to do this every 30 minutes, in other words...why > > not have the > > servlet do what it naturally does...sit there and get hit by client > > requestsget the infoand send it back? I mean...the servlet > > can't push to the client unless you want to use something > > besides http, > > or unless you are using servlets on both ends and http servers on both > > ends. You could use keep alives I guess.I wouldn't thoughonly > > so many tcp/ip connections. > > > > Wade > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > --- > QAS Ltd. > Developers of QuickAddress Software > http://www.qas.com";>www.qas.com > Registered in England: No 2582055 > Registered in Australia: No 082 851 474 > ---
Re: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
On Tue, 21 Dec 2004 15:02:58 -0500, Phillip Qin
<[EMAIL PROTECTED]> wrote:
> I assume you have something like this in your server.xml
>
> type="javax.sql.DataSource" />
>
> Is there any warning or exception in catalina.out or any other log files?
>
> -Original Message-
> From: David Uctaa [mailto:[EMAIL PROTECTED]
> Sent: December 21, 2004 1:52 PM
> To: Tomcat Users List
> Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
>
> If the name of the global resource in server.xml is defined as
>
>
>
> ...
>
>
>
> then the resourcelink in context.xml is
>
>
> global="jdbc/MYDATASOURCE"
> name="jdbc/MYDATASOURCE"
> type="javax.sql.DataSource"/>
>
>
> (not sure if listing the exact datasource specification would be a security
> breach, so I'm munging the actual datasource name, but everything else is
> the same, including upper/lower case)
>
> On Tue, 21 Dec 2004 13:39:07 -0500, Phillip Qin <[EMAIL PROTECTED]>
> wrote:
> > What is the resourcelink in your context.xml?
> >
> >
> > -Original Message-
> > From: David Uctaa [mailto:[EMAIL PROTECTED]
> > Sent: December 21, 2004 12:27 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat
> > 5.0.28
> >
> > No matter what i do, the JNDI lookup is returning null. What causes a
> > JNDI lookup to return null when the resource is defined in the
> > section of server.xml? Should I put the
> > resources into in my context.xml?
> >
> > On Mon, 20 Dec 2004 13:52:29 -0500, David Uctaa <[EMAIL PROTECTED]>
> > wrote:
> > > I am running Tomcat 5.0.28 on Win XP SP1. We have DB2 running on 2
> > > iSeries servers. When I attempt to look up a DataSource from JNDI
> > > to get a connection from it, the JNDI lookup is returning null.
> > >
> > > I am using IBM's JTOpen library for the JDBC drivers, and I am
> > > attempting to use Tomcat to manage the connection pooling. I am
> > > following the instructions I saw listed here:
> > > http://www.itjungle.com/fhg/fhg060204-story01.html . I am trying the
> > > first option, using the Commons DBCP connection pool.
> > >
> > > I have attached copies of my server.xml and the context
> > > configuration file webappname.xml. The code I am using to access
> > > the data source is pretty generic:
> > >
> > > Context initCtx = new InitialContext();
> > > Context ctx = (Context) initCtx.lookup("java:comp/env"); DataSource
> > > ds = (DataSource) ctx.lookup("jdbc/myFirstDataSource");
> > > Connection conn = ds.getConnection();
> > >
> > > It turns out the that ctx.lookup call is returning null, as if it
> > > can't find the JNDI resource, and I can't figure out what I have
> > > misconfigured.
> > >
> > > Any and all help will be greatly appreciated.
> > >
> > >
> > >
> >
> > -
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
> >
> >
> >
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
> !DSPAM:41c870c3302641030564044!
>
>
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Re: Why is tomcat (java) so memory intensive?
Dakota Jack wrote: Why, then, does the Tomcat 5.0 say in the RELEASE-NOTES "JAVAC leaking memory" is an issue? On Tue, 21 Dec 2004 16:06:13 -, Allistair Crossley <[EMAIL PROTECTED]> wrote: i think (from memory) it had to do with registering requests with jk. anyway, like i say, upgrade and you'll see that leak go away i am pretty sure. -Original Message- From: Allistair Crossley Sent: 21 December 2004 16:00 To: Tomcat Users List; [EMAIL PROTECTED] Subject: RE: Why is tomcat (java) so memory intensive? you are right, tomcat 5.0.19 did have a memory leak. some dispute it, but it is there, i had it also and used a profiler to show it. you should upgrade to 5.0.28. Thanks, Jack That's during compilation. I always setup tomcat to fork when compiling jsp. That means it runs a seperate process to compile pages. I do this in both production and testing. I just like the feeling it gives me :-P ... well it's just better to not worry about it for me. The bug is supposed to be gone in 1.4.2, but I still fork. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
You may use a scheduler to schedule your tasks to run every 30 minutes. http://www.theserverside.com/blogs/printfriendly.tss?id=QuartzSchedulerInJ2E E http://www.quartzscheduler.org/quartz/. Peiyun -Original Message- From: Allistair Crossley [mailto:[EMAIL PROTECTED] Sent: December 21, 2004 12:21 PM To: Tomcat Users List Subject: RE: How to run servlet for every 30 minutes in Tomcat 4.1.30 myself and ben have suggested the most appropriate methods for doing this. Ben mentions WGET http://www.gnu.org/software/wget/wget.html which can be added to a *basic* script hooked up to a cron with an interval of whatever you like. you really ought to get rid of threads and thread sleeps inside web application code. Allistair. > -Original Message- > From: Jorge Sopena [mailto:[EMAIL PROTECTED] > Sent: 21 December 2004 17:15 > To: Tomcat Users List > Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 > > > Hi, > I'm having a similar problem in my application. > I've got several servlets called by the users. Every requets > save some > information in DB, that has to be sent to another server > later and in a > compress format. > So I need sth similar toShilpa is asking, a process which > runs every X > minutes to recover the information and send it to the Server. > > My solution to this problem was to implement a > "ServletContextListener" > inside Tomcat. > When Tomcat starts my application the "contextInitialized" method is > called, and then a thread is started to do the task explained above. > I use "Thread.sleep(step)" to wait for the next execution. > > I didn't find anyway to set a timer for a servlet, and I > didn't like the > option of creating an external script . > > Any other suggestions to solver this problem? > > Thanks > > Jorge > > > Ben Souther wrote: > > >On Tue, 2004-12-21 at 11:28, Allistair Crossley wrote: > > > > > >>no, and I believe doing so it bad practice. use some OS > controlled timer like cron to issue a HTTP call to your > servlet. I once wrote a shell script that calls a http > address on the local machine but cannot remember how ;) if > you are using oracle then you can setup this timer thread > inside the database itself. don't add a thread into your web > application. > >> > >> > >> > > > >I concur. It's certainly possible to write a treaded java object that > >fires a command every so often but there would be no point in making > >that object a servlet (servlets exist to answer client requests). > >It's also, IMHO, more aggravation than it's worth to manage your own > >daemon threads in a webapp. > > > >It would take all of 2 minutes to write a timer with crontab and wget > >that could call your servlet whenever you want. > > > > > >- > >To unsubscribe, e-mail: [EMAIL PROTECTED] > >For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > --- QAS Ltd. Developers of QuickAddress Software http://www.qas.com";>www.qas.com Registered in England: No 2582055 Registered in Australia: No 082 851 474 --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
Can you try javax.sql.DataSource in ? You use javax.sql.DataSource
in resourcelink then the type in resource has to be the same.
-Original Message-
From: David Uctaa [mailto:[EMAIL PROTECTED]
Sent: December 21, 2004 3:26 PM
To: Tomcat Users List
Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
On Tue, 21 Dec 2004 15:02:58 -0500, Phillip Qin <[EMAIL PROTECTED]>
wrote:
> I assume you have something like this in your server.xml
>
> type="javax.sql.DataSource" />
>
> Is there any warning or exception in catalina.out or any other log
> files?
>
> -Original Message-
> From: David Uctaa [mailto:[EMAIL PROTECTED]
> Sent: December 21, 2004 1:52 PM
> To: Tomcat Users List
> Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat
> 5.0.28
>
> If the name of the global resource in server.xml is defined as
>
>
>
> ...
>
>
>
> then the resourcelink in context.xml is
>
>
> global="jdbc/MYDATASOURCE"
> name="jdbc/MYDATASOURCE"
> type="javax.sql.DataSource"/>
>
>
> (not sure if listing the exact datasource specification would be a
> security breach, so I'm munging the actual datasource name, but
> everything else is the same, including upper/lower case)
>
> On Tue, 21 Dec 2004 13:39:07 -0500, Phillip Qin
> <[EMAIL PROTECTED]>
> wrote:
> > What is the resourcelink in your context.xml?
> >
> >
> > -Original Message-
> > From: David Uctaa [mailto:[EMAIL PROTECTED]
> > Sent: December 21, 2004 12:27 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat
> > 5.0.28
> >
> > No matter what i do, the JNDI lookup is returning null. What causes
> > a JNDI lookup to return null when the resource is defined in the
> > section of server.xml? Should I put the
> > resources into in my context.xml?
> >
> > On Mon, 20 Dec 2004 13:52:29 -0500, David Uctaa <[EMAIL PROTECTED]>
> > wrote:
> > > I am running Tomcat 5.0.28 on Win XP SP1. We have DB2 running on
> > > 2 iSeries servers. When I attempt to look up a DataSource from
> > > JNDI to get a connection from it, the JNDI lookup is returning
> > > null.
> > >
> > > I am using IBM's JTOpen library for the JDBC drivers, and I am
> > > attempting to use Tomcat to manage the connection pooling. I am
> > > following the instructions I saw listed here:
> > > http://www.itjungle.com/fhg/fhg060204-story01.html . I am trying the
> > > first option, using the Commons DBCP connection pool.
> > >
> > > I have attached copies of my server.xml and the context
> > > configuration file webappname.xml. The code I am using to access
> > > the data source is pretty generic:
> > >
> > > Context initCtx = new InitialContext();
> > > Context ctx = (Context) initCtx.lookup("java:comp/env");
> > > DataSource ds = (DataSource) ctx.lookup("jdbc/myFirstDataSource");
> > > Connection conn = ds.getConnection();
> > >
> > > It turns out the that ctx.lookup call is returning null, as if it
> > > can't find the JNDI resource, and I can't figure out what I have
> > > misconfigured.
> > >
> > > Any and all help will be greatly appreciated.
> > >
> > >
> > >
> >
> >
> > -
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
> >
> >
> >
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
>
>
>
-
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!DSPAM:41c886e8314441869949623!
Definitive os.name list (was Re: [OT] Request an app test (free beer!))
Frank W. Zammetti wrote: I'm working on something for which I need to know what the os.name property on various OS's is. FAQ. See http://www.tolstoy.com/samizdat/sysprops.html. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
Looks like that worked! Many thanks! :)
Now my question is, since I'm using javax.sql.DataSource as the
ResourceType, how do I know if I'm using the connection pool or
opening a new connection each time I request a connection?
The factory associated with the resource is
org.apache.commons.dbcp.BasicDataSourceFactory
Does this factory provide connection pooling? If not, how do I change
the implementation to use pooling? Once I'm using pooling, how do I
find out how many connections are in use? How do I find out if a
connetion I am about to get will come from the pool or if a new
connection is being created? Etc. Is there a page somewhere that
references this information?
Thanks again.
On Tue, 21 Dec 2004 16:03:42 -0500, Phillip Qin
<[EMAIL PROTECTED]> wrote:
> Can you try javax.sql.DataSource in ? You use javax.sql.DataSource
> in resourcelink then the type in resource has to be the same.
>
> -Original Message-
> From: David Uctaa [mailto:[EMAIL PROTECTED]
> Sent: December 21, 2004 3:26 PM
> To: Tomcat Users List
> Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
>
> auth="Container" scope="Shareable" name="jdbc/MYDATASOURCE"/>
>
> On Tue, 21 Dec 2004 15:02:58 -0500, Phillip Qin <[EMAIL PROTECTED]>
> wrote:
> > I assume you have something like this in your server.xml
> >
> > > type="javax.sql.DataSource" />
> >
> > Is there any warning or exception in catalina.out or any other log
> > files?
> >
> > -Original Message-
> > From: David Uctaa [mailto:[EMAIL PROTECTED]
> > Sent: December 21, 2004 1:52 PM
> > To: Tomcat Users List
> > Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat
> > 5.0.28
> >
> > If the name of the global resource in server.xml is defined as
> >
> >
> >
> > ...
> >
> >
> >
> > then the resourcelink in context.xml is
> >
> >
> > > global="jdbc/MYDATASOURCE"
> > name="jdbc/MYDATASOURCE"
> > type="javax.sql.DataSource"/>
> >
> >
> > (not sure if listing the exact datasource specification would be a
> > security breach, so I'm munging the actual datasource name, but
> > everything else is the same, including upper/lower case)
> >
> > On Tue, 21 Dec 2004 13:39:07 -0500, Phillip Qin
> > <[EMAIL PROTECTED]>
> > wrote:
> > > What is the resourcelink in your context.xml?
> > >
> > >
> > > -Original Message-
> > > From: David Uctaa [mailto:[EMAIL PROTECTED]
> > > Sent: December 21, 2004 12:27 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat
> > > 5.0.28
> > >
> > > No matter what i do, the JNDI lookup is returning null. What causes
> > > a JNDI lookup to return null when the resource is defined in the
> > > section of server.xml? Should I put the
> > > resources into in my context.xml?
> > >
> > > On Mon, 20 Dec 2004 13:52:29 -0500, David Uctaa <[EMAIL PROTECTED]>
> > > wrote:
> > > > I am running Tomcat 5.0.28 on Win XP SP1. We have DB2 running on
> > > > 2 iSeries servers. When I attempt to look up a DataSource from
> > > > JNDI to get a connection from it, the JNDI lookup is returning
> > > > null.
> > > >
> > > > I am using IBM's JTOpen library for the JDBC drivers, and I am
> > > > attempting to use Tomcat to manage the connection pooling. I am
> > > > following the instructions I saw listed here:
> > > > http://www.itjungle.com/fhg/fhg060204-story01.html . I am trying the
> > > > first option, using the Commons DBCP connection pool.
> > > >
> > > > I have attached copies of my server.xml and the context
> > > > configuration file webappname.xml. The code I am using to access
> > > > the data source is pretty generic:
> > > >
> > > > Context initCtx = new InitialContext();
> > > > Context ctx = (Context) initCtx.lookup("java:comp/env");
> > > > DataSource ds = (DataSource) ctx.lookup("jdbc/myFirstDataSource");
> > > > Connection conn = ds.getConnection();
> > > >
> > > > It turns out the that ctx.lookup call is returning null, as if it
> > > > can't find the JNDI resource, and I can't figure out what I have
> > > > misconfigured.
> > > >
> > > > Any and all help will be greatly appreciated.
> > > >
> > > >
> > > >
> > >
> > >
> > > -
> > > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > > For additional commands, e-mail: [EMAIL PROTECTED]
> > >
> > >
> > >
> > >
> > >
> >
> > -
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
> >
> >
> >
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
> !DSPAM:41c886e8314441869949623!
>
>
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Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
Jorge Sopena wrote: Why is bad using own threads inside web application? Aren't all the servlet request actually a thread in Tomcat? I can't find a reason why it's so bad solution. I think that comes from J2EE specs. I do not remember is threads just forbidden but if you follow specs, you do not know and you do not have to know how application server uses threads and controls thread behaviour. If portability is issue for your application, it is better to not use threads. > In that way, you manage to have a single and independent application. Maybe I don't know some thread behaviour in Tomcat... After all, I have use threads in web application with tomcat :) and I haven't have any problems or strange thread behaviour. Sometimes whole concurrent programming and syncronizing my own threads causes troubles but nothing due tomcat. Back to original question. [EMAIL PROTECTED] wrote: I am using Tomcat4.1.30 version. I have to develop a client application which looks in the database every 30 minutes, ApplicationContextListener + Timer + TimerTask to retrieve the status of an order and send the status to the remote client. Again waits for the The client's response and insert the repsonse back to the database. What is that remote client? Is actually another server and your application is client. If so, just add client code for server in TimerTask (http-, web service- or whatever client). - Jukka - - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Synchronizing properties in cluster setup
Hi Srinivas, What you are after is a shared / networked filesystem like NFS Coda for *nix. PJ Srinivas Rao Ch wrote: Hi, I successfully configured my clustering setup with mod_jk2 and it is running fine. Now the problem is I have some properties files in my tomcat web application which gets modified when some features are accessed. If some changes are there in one cluster member, I have to update the same in other members also. And, I have a folder of icons which gets changed when client uploads new icon in to the system. I have to synchronize this folder also across all the cluster members. Can somebody suggest me how I can do this with the setup I have(Apache 2.0.52 + Tomcat 5.0.16 + mod_jk2). Is there any service already available to sync the resources like these? Regards, Srinivas - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] Request an app test (free beer!)
NetBSD(native jre): NetBSD
NetBSD(using linux binaries): Linux
> >Sent: Monday, December 20, 2004 2:26 PM
> >To: Commons User; Struts User; Tomcat User
> >Subject: [OT] Request an app test (free beer!)
> >
> >
> >I was informed last OT post I made that the subject should always
> >include the word "beer". ?I added the "free" to get your attention :)
> >
> >I'm working on something for which I need to know what the os.name
> >property on various OS's is. ?I would greatly appreciate it if some
> >folks could try the following:
> >
> >public class test {
> >public static void main(String[] args) {
> >System.out.println(System.getProperty("os.name"));
> >}
> >}
> >
> >I'm particularly interested in various *nix variants, Linux, Mac and
> >such. ?Windows I already have answers for (although some verification to
> >
> >be sure nothing fishy is going on wouldn't hurt).
> >
> >If you could just post your OS and what the result was, I would greatly
> >appreciate it. ?Thanks in advance!
-
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RE: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
Your conections are pooled by Tomcat.
I don't know how you configure your Resource, mine looks like this
-
-
driverClassName
oracle.jdbc.driver.OracleDriver
-
url
jdbc:oracle:thin:@myhost.com:1521:mysid
-
username
myuser
-
password
mypass
-
maxActive
25
-
maxIdle
5
-
minIdle
5
-
maxWait
15000
-
removeAbandoned
true
-
validationQuery
SELECT SYSDATE FROM DUAL
-
testOnBorrow
true
-
testOnReturn
true
-
minEvictableIdleTimeMillis
-1
-
timeBetweenEvictionRunsMillis
3
-
numTestsPerEvictionRun
1
-
testWhileIdle
true
To test if pooling works, you either observe the number of jdbc connections
in oracle or do a netstat to list of jdbc connections (not 1521). In my
case, max idle would be 5.
-Original Message-
From: David Uctaa [mailto:[EMAIL PROTECTED]
Sent: December 21, 2004 4:30 PM
To: Tomcat Users List
Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat 5.0.28
Looks like that worked! Many thanks! :)
Now my question is, since I'm using javax.sql.DataSource as the
ResourceType, how do I know if I'm using the connection pool or opening a
new connection each time I request a connection?
The factory associated with the resource is
org.apache.commons.dbcp.BasicDataSourceFactory
Does this factory provide connection pooling? If not, how do I change the
implementation to use pooling? Once I'm using pooling, how do I find out
how many connections are in use? How do I find out if a connetion I am
about to get will come from the pool or if a new connection is being
created? Etc. Is there a page somewhere that references this information?
Thanks again.
On Tue, 21 Dec 2004 16:03:42 -0500, Phillip Qin <[EMAIL PROTECTED]>
wrote:
> Can you try javax.sql.DataSource in ? You use
> javax.sql.DataSource in resourcelink then the type in resource has to
> be the same.
>
> -Original Message-
> From: David Uctaa [mailto:[EMAIL PROTECTED]
> Sent: December 21, 2004 3:26 PM
> To: Tomcat Users List
> Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat
> 5.0.28
>
> type="com.ibm.as400.access.AS400JDBCConnectionPoolDataSource"
> auth="Container" scope="Shareable" name="jdbc/MYDATASOURCE"/>
>
> On Tue, 21 Dec 2004 15:02:58 -0500, Phillip Qin
> <[EMAIL PROTECTED]>
> wrote:
> > I assume you have something like this in your server.xml
> >
> > > scope="Shareable" type="javax.sql.DataSource" />
> >
> > Is there any warning or exception in catalina.out or any other log
> > files?
> >
> > -Original Message-
> > From: David Uctaa [mailto:[EMAIL PROTECTED]
> > Sent: December 21, 2004 1:52 PM
> > To: Tomcat Users List
> > Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat
> > 5.0.28
> >
> > If the name of the global resource in server.xml is defined as
> >
> >
> >
> > ...
> >
> >
> >
> > then the resourcelink in context.xml is
> >
> >
> > > global="jdbc/MYDATASOURCE"
> > name="jdbc/MYDATASOURCE"
> > type="javax.sql.DataSource"/>
> >
> >
> > (not sure if listing the exact datasource specification would be a
> > security breach, so I'm munging the actual datasource name, but
> > everything else is the same, including upper/lower case)
> >
> > On Tue, 21 Dec 2004 13:39:07 -0500, Phillip Qin
> > <[EMAIL PROTECTED]>
> > wrote:
> > > What is the resourcelink in your context.xml?
> > >
> > >
> > > -Original Message-
> > > From: David Uctaa [mailto:[EMAIL PROTECTED]
> > > Sent: December 21, 2004 12:27 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: Difficulty connecting to DB2 for iSeries from Tomcat
> > > 5.0.28
> > >
> > > No matter what i do, the JNDI lookup is returning null. What
> > > causes a JNDI lookup to return null when the resource is defined
> > > in the section of server.xml? Should I
> > > put the resources into in my context.xml?
> > >
> > > On Mon, 20 Dec 2004 13:52:29 -0500, David Uctaa <[EMAIL PROTECTED]>
> > > wrote:
> > > > I am running Tomcat 5.0.28 on Win XP SP1. We have DB2 running
> > > > on 2 iSeries servers. When I attempt to look up a DataSource
> > > > from JNDI to get a connection from it, the JNDI lookup is
> > > > returning null.
> > > >
> > > > I am using IBM's JTOpen library for the JDBC drivers, and I am
> > > > attempting to use Tomcat to manage the connection pooling. I am
> > > > following the instructions I saw listed here:
> > > > http://www.itjungle.com/fhg/fhg060204-story01.html . I am trying
the
> > > > first option, using the Commons DBCP connection pool.
> > > >
> > > > I have attached copies of my server.xml and the context
> > > > configuration file webappname.xml. The code I am using to
> > > > access the data source is pretty generic:
> > > >
> > > > Context initCtx = new InitialContext();
> > > > Context ctx = (Context) initCtx.lookup("java:comp/env");
Re: HTTP Status 404 - /admin && HTTP Status 404 - /manager/html
On Tue, 2004-12-21 at 19:05, Dwayne Ghant wrote: > Configured tomcat.5.0.27/apache2.x/mod_jk2.so > > After configuration my "admin" and "manager" application > stoped working. In apache configuration you must have: Alias /admin $CATALINA_HOME/server/webapps/admin Alias /manager $CATALINA_HOME/server/webapps/manager Replace $CATALINA_HOME with your path; I hope that will help you. Viorel. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: FORM based authentication config
On Tue, 2004-12-21 at 16:15, Chris Chappell wrote: > Hi I'm having trouble getting form based authentication to work. Any help > much appreciated. > I'm missing something simple I'm sure. (TC 5.0.19, W2K, Mysql4) > > I am using a JDBC Realm which works fine with BASIC auth. > > After changing to FORM and try > http://127.0.0.1:8080/MyApp/security/protected/login.jsp I get: > The requested resource (/MyApp/security/protected/login.jsp) is not available. > > To set this up I copied the files from the JSP examples - login.jsp, > error.jsp in folders \security\protected to \MyApp\security\protected\ > I copied web.xml parts: > > > > org.apache.jsp.security.protected_.error_jsp > > org.apache.jsp.security.protected_.error_jsp > > > > > org.apache.jsp.security.protected_.index_jsp > > org.apache.jsp.security.protected_.index_jsp > > > > > org.apache.jsp.security.protected_.login_jsp > > org.apache.jsp.security.protected_.login_jsp > > > and mappings > > > > org.apache.jsp.security.protected_.error_jsp > /security/protected/error.jsp > > > > > org.apache.jsp.security.protected_.index_jsp > /security/protected/index.jsp > > > > > org.apache.jsp.security.protected_.login_jsp > /security/protected/login.jsp > > > with > > > > Calendar > /Calendar > > > > > > user > admin > sysadmin > > > > and configured > > > FORM > MyApp > /security/protected/login.jsp > /security/protected/error.jsp > > > > > Chris Try to use static resources for the form-login-page and form-error-page. It works for me. And skip servlet mapping Viorel - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
It is possible to create a servlet thread in the init() method. That thread sould stay alive and run something every thirty minutes. The issue of pushing information out to the user remins the same. The servlet and the thread cannot do that. On the other hand, it is possible to setup java script on the page to detect 30 minute intervals to pull a page from the server. It is an awful lot of work for so little a result... It is best just to put a java process into cron or task scheduler and have the user run the report when they want the info. >>> [EMAIL PROTECTED] 12-21-2004 14:44 >>> Jorge Sopena wrote: > Why is bad using own threads inside web application? > Aren't all the servlet request actually a thread in Tomcat? > I can't find a reason why it's so bad solution. I think that comes from J2EE specs. I do not remember is threads just forbidden but if you follow specs, you do not know and you do not have to know how application server uses threads and controls thread behaviour. If portability is issue for your application, it is better to not use threads. > > In that way, you manage to have a single and independent application. > > Maybe I don't know some thread behaviour in Tomcat... > After all, I have use threads in web application with tomcat :) and I haven't have any problems or strange thread behaviour. Sometimes whole concurrent programming and syncronizing my own threads causes troubles but nothing due tomcat. Back to original question. > [EMAIL PROTECTED] wrote: > I am using Tomcat4.1.30 version. > I have to develop a client application which looks in the database every 30 > minutes, ApplicationContextListener + Timer + TimerTask > to retrieve the status of an order and send the status to the remote client. > Again waits for the > The client's response and insert the repsonse back to the database. What is that remote client? Is actually another server and your application is client. If so, just add client code for server in TimerTask (http-, web service- or whatever client). - Jukka - - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Memory Leak with Javac and Tomcat v. 4.0.28
Thanks, all! Jack -- "You can lead a horse to water but you cannot make it float on its back." ~Dakota Jack~ "You can't wake a person who is pretending to be asleep." ~Native Proverb~ "Each man is good in His sight. It is not necessary for eagles to be crows." ~Hunkesni (Sitting Bull), Hunkpapa Sioux~ --- "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
I think I saw something like this, but not sure if it works: Servlet Servlet cron expression? 1 Peiyun -Original Message- From: Dennis Payne [mailto:[EMAIL PROTECTED] Sent: December 21, 2004 5:37 PM To: [EMAIL PROTECTED] Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30 It is possible to create a servlet thread in the init() method. That thread sould stay alive and run something every thirty minutes. The issue of pushing information out to the user remins the same. The servlet and the thread cannot do that. On the other hand, it is possible to setup java script on the page to detect 30 minute intervals to pull a page from the server. It is an awful lot of work for so little a result... It is best just to put a java process into cron or task scheduler and have the user run the report when they want the info. >>> [EMAIL PROTECTED] 12-21-2004 14:44 >>> Jorge Sopena wrote: > Why is bad using own threads inside web application? > Aren't all the servlet request actually a thread in Tomcat? > I can't find a reason why it's so bad solution. I think that comes from J2EE specs. I do not remember is threads just forbidden but if you follow specs, you do not know and you do not have to know how application server uses threads and controls thread behaviour. If portability is issue for your application, it is better to not use threads. > > In that way, you manage to have a single and independent application. > > Maybe I don't know some thread behaviour in Tomcat... > After all, I have use threads in web application with tomcat :) and I haven't have any problems or strange thread behaviour. Sometimes whole concurrent programming and syncronizing my own threads causes troubles but nothing due tomcat. Back to original question. > [EMAIL PROTECTED] wrote: > I am using Tomcat4.1.30 version. > I have to develop a client application which looks in the database every 30 > minutes, ApplicationContextListener + Timer + TimerTask > to retrieve the status of an order and send the status to the remote client. > Again waits for the > The client's response and insert the repsonse back to the database. What is that remote client? Is actually another server and your application is client. If so, just add client code for server in TimerTask (http-, web service- or whatever client). - Jukka - - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
At 05:37 PM 12/21/2004, you wrote: It is possible to create a servlet thread in the init() method. That thread sould stay alive and run something every thirty minutes. The issue of pushing information out to the user remins the same. The servlet and the thread cannot do that. On the other hand, it is possible to setup java script on the page to detect 30 minute intervals to pull a page from the server. It is an awful lot of work for so little a result... It is best just to put a java process into cron or task scheduler and have the user run the report when they want the info. >>> [EMAIL PROTECTED] 12-21-2004 14:44 >>> Jorge Sopena wrote: > Why is bad using own threads inside web application? > Aren't all the servlet request actually a thread in Tomcat? > I can't find a reason why it's so bad solution. I think that comes from J2EE specs. I do not remember is threads just forbidden but if you follow specs, you do not know and you do not have to know how application server uses threads and controls thread behaviour. If portability is issue for your application, it is better to not use threads. > > In that way, you manage to have a single and independent application. > > Maybe I don't know some thread behaviour in Tomcat... > After all, I have use threads in web application with tomcat :) and I haven't have any problems or strange thread behaviour. Sometimes whole concurrent programming and syncronizing my own threads causes troubles but nothing due tomcat. Back to original question. > [EMAIL PROTECTED] wrote: > I am using Tomcat4.1.30 version. > I have to develop a client application which looks in the database every 30 > minutes, ApplicationContextListener + Timer + TimerTask > to retrieve the status of an order and send the status to the remote client. > Again waits for the > The client's response and insert the repsonse back to the database. What is that remote client? Is actually another server and your application is client. If so, just add client code for server in TimerTask (http-, web service- or whatever client). - Jukka - We have used a cron job using a command-line text-only web browser like 'links' or 'Lynx' to execute scripts like this at intervals. Much easier solution! Cheers. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. http://www.sng.ecs.soton.ac.uk/mailscanner/ Configuration by Glenn Parsons dnsadmin-at-1bigthink.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
It's interesting, Craig and I had an exchange about threads in servlet containers last week... I can't find a link to the thread unfortunately. Anyway, the basic idea behind that "don't spawn your own threads inside a servlet container" admonishment is based more on the fact that it's quite easy to screw up doing so, more than it has to do with virtually anything else. You want the servlet container to manager resources for you, and you lose that by spawning your own threads. The container isn't aware of the threads, so it can't control them for things like graceful shutdowns or simply trying to control resource utilization. Many people, including me, tend to ignore that warning when the situation warrants it, but you have to be extra-careful. For instance, you don't under any circumstances want to hold on to references to response, request or session objects because you don't manage them. You also, unless you really have a need and know what your doing, want to spawn threads to handle requests at all. Any threads you do spawn in a container should tend to be independent units of execution. If your use case fits that description, you can get away with it relatively safely. That being said, spawning things like daemon threads for low-level behind-the-scenes type processing is generally OK, so long as you are careful (i.e., be sure no runaway processing can occur, make sure it will shut down gracefully, etc). You might be able to use something like that in this case, you'll have to decide. If your using Struts, you can spawn the thread from a plug-in, as I've done in the past, but there are non-Struts equivalents (worse comes to worse, just do it in a servlet.init()). Do yourself a favor and make the thread processing functional independent of your app essentially, and even make it so it's not aware it's running in a servlet container. But again, caution is the key. If you make it a demon thread and set it's priority as low as you can and be sure to not hold on to a reference to it, I've found that works just fine under a number of app servers on a numeber of OSs. The bottom-line is that really that psuedo-rule is around because people tend to shoot themselves in the foot when using threads a bit too often, so better to advise against getting into a situation where you might do that. But, if your confident in your ability, and believe the use case really warrants it, you CAN do it, and relatively safely. -- Frank W. Zammetti Founder and Chief Software Architect Omnytex Technologies http://www.omnytex.com Dennis Payne wrote: It is possible to create a servlet thread in the init() method. That thread sould stay alive and run something every thirty minutes. The issue of pushing information out to the user remins the same. The servlet and the thread cannot do that. On the other hand, it is possible to setup java script on the page to detect 30 minute intervals to pull a page from the server. It is an awful lot of work for so little a result... It is best just to put a java process into cron or task scheduler and have the user run the report when they want the info. [EMAIL PROTECTED] 12-21-2004 14:44 >>> Jorge Sopena wrote: Why is bad using own threads inside web application? Aren't all the servlet request actually a thread in Tomcat? I can't find a reason why it's so bad solution. I think that comes from J2EE specs. I do not remember is threads just forbidden but if you follow specs, you do not know and you do not have to know how application server uses threads and controls thread behaviour. If portability is issue for your application, it is better to not use threads. > In that way, you manage to have a single and independent application. Maybe I don't know some thread behaviour in Tomcat... After all, I have use threads in web application with tomcat :) and I haven't have any problems or strange thread behaviour. Sometimes whole concurrent programming and syncronizing my own threads causes troubles but nothing due tomcat. Back to original question. [EMAIL PROTECTED] wrote: I am using Tomcat4.1.30 version. I have to develop a client application which looks in the database every 30 minutes, ApplicationContextListener + Timer + TimerTask to retrieve the status of an order and send the status to the remote client. Again waits for the The client's response and insert the repsonse back to the database. What is that remote client? Is actually another server and your application is client. If so, just add client code for server in TimerTask (http-, web service- or whatever client). - Jukka - - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -
