RE: Tomcat 4 and Log4J
Have you tried putting the log4j.jar in the jre/lib/ext directory of the JDK ? -- Aravind -Original Message- From: Jiger Java [mailto:[EMAIL PROTECTED]] Sent: Tuesday, 18 September 2001 14:51 To: [EMAIL PROTECTED] Subject: Re: Tomcat 4 and Log4J Hi Craig, Things are working now. What I did was to put log4j.properties in WEB-INF/classes log4j.jar in WEB-INF/lib. But as u will agree this is not optimum since I will then have to put log4j.jar in all WEbapps. So I moved log4j.jar into common/lib then problems start. If I put log4j.jar in $CATALINA_HOME/lib log4j.properties in $CATALINA_HOME/classes then also it works but then now my log4j.properties is shared across all webapps I cant have individual .properties files. Any idea how I can have one log4j.jar but individual log4j.properties per webapp. No putting log4j.jar in common/lib .properties in WEB-INF/classes does not work. Awating ur reply, Thanks, Jiger From: Craig R. McClanahan [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: Tomcat 4 and Log4J Date: Mon, 17 _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
RE: The pitfalls in restarting tomcat
or you can use (if you are on Linux that is) the command
pstree -p to easily view the parent process for Tomcat.
-- Aravind
-Original Message-
From: Pier Fumagalli [mailto:[EMAIL PROTECTED]]
Sent: Monday, 10 September 2001 11:49
To: [EMAIL PROTECTED]
Subject: Re: The pitfalls in restarting tomcat
Jeff Turner [EMAIL PROTECTED] wrote:
With Tomcat 3.3, it is very easy to confuse Tomcat into thinking that it
has shut down (the ajp12.id file does not exist), but it actually
running. In this (common) situation, there is no way to kill tomcat
other than killing the processes ('killall java'). Killing tomcat in
this way is *very* dangerous, because it sometimes leaves threads in the
state described by 'man ps' as:
D uninterruptible sleep (usually IO)
Of course you don't have to killall, but kill only the parent process Java,
the real process, as all the others are just threads... (Linux sucks on
that)
Pier
forward from servlet to JSP got slow
Hi, Environment is Tomcat 3.2.3 on Linux. All of a sudden the forward from a servlet to a JSP page got very slow. It is weird in that we have 2 servers in a load balance pool and it started happening on 1 server and while debugging it, I stoped and started the other one and it started happening in the other also. Any clues ? It eventually gets there but it takes about 15 seconds. The code is like this. getServletContext().getRequestDispatcher(nextPage).forward(req, res); -- Aravind
More info. RE: forward from servlet to JSP got slow
I have more info. Turned all debug values on in Tomcat and this is the trace. As one can see there is 5 sec gap between the last 2 lines, and I have no idea what goes on there. 2001-09-07 21:38:02 - ContextManager: SimpleMapper1: SM: Found extension mapping jsp(org.apache.jasper.servlet.JspServlet/null) 2001-09-07 21:38:02 - ContextManager: SimpleMapper1: SM: After mapping R( + /le on/menu-look1.jsp + null) jsp(org.apache.jasper.servlet.JspServlet/null) 2001-09-07 21:38:02 - ContextManager: After processing: R( + /leon/menu-look1.j sp + null) 2001-09-07 21:38:02 - Ctx( ): Get real path /leon/menu-look1.jsp /opt/tomcat/we bapps/ROOT/leon/menu-look1.jsp /opt/tomcat/webapps/ROOT 2001-09-07 21:38:02 - Ctx( ): Get real path /leon/menu-look1.jsp /opt/tomcat/we bapps/ROOT/leon/menu-look1.jsp /opt/tomcat/webapps/ROOT 2001-09-07 21:38:02 - Ctx( ): Get real path /leon/menu-look1.jsp /opt/tomcat/we bapps/ROOT/leon/menu-look1.jsp /opt/tomcat/webapps/ROOT 2001-09-07 21:38:07 - ContextManager: SimpleRealm: Verify user=null pass=null -- Aravind -Original Message- From: Aravind Naidu [mailto:[EMAIL PROTECTED]] Sent: Friday, 7 September 2001 19:34 To: [EMAIL PROTECTED] Subject: forward from servlet to JSP got slow Hi, Environment is Tomcat 3.2.3 on Linux. All of a sudden the forward from a servlet to a JSP page got very slow. It is weird in that we have 2 servers in a load balance pool and it started happening on 1 server and while debugging it, I stoped and started the other one and it started happening in the other also. Any clues ? It eventually gets there but it takes about 15 seconds. The code is like this. getServletContext().getRequestDispatcher(nextPage).forward(req, res); -- Aravind
RE: COMPAQ V300
Sorry... Not to start an OS war or something like that. (As mentioned before it could be a JDK problem) We have Tomcat 3.2.3 running on RedHat 7.1 with IBM JDK 1.3 (latest) quite nicely thank you. It was a default Linux install with no tuning applied and we have stress tested it successfully for 100 concurrent users. ... and we have been running Linux for 4 years without a break. -- Aravind -Original Message- From: Pier Fumagalli [mailto:[EMAIL PROTECTED]] Sent: Wednesday, 5 September 2001 20:28 To: [EMAIL PROTECTED] Subject: Re: COMPAQ V300 Joe Sutherland (UKI) [EMAIL PROTECTED] wrote: Hi Guys, I'm adding more info to my own message (does this seem silly or what?).. I've just loaded RH6.2 onto the same COMPAQ V300 and TOMCAT (3.2.2) works... so I can now isolate the problem as something RH 7.1 specific... Rgds Joe Sutherland I only had problems with RH71... RH62 is somehow better (even if it's crappy still) and more compatible with stuff... I suggest dropping Linux in favour of some real OS... Kinda like Solaris 8-7/01 for x86... NEVER EVER (In almost 2 years now) had an OS-related problem with it... You install it, and if it works the first time, out of the box (ok, it's picky about RAM timings) it works forever until your hardware doesn't break down. Pier
RE: how to make a servlet as the home page
Create an index.html with the following text HTML HEAD meta http-equiv=REFRESH CONTENT=0; URL=/servlet/com.acme.XYZServlet /HEAD /HTML Ensure that the servlet handles doGet(...) -- Aravind - Original Message - From: naveen [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, August 26, 2001 9:29 PM Subject: how to make a servlet as the home page hi , I am using tomcat and apache, I want to make a servlet as the home page of my web site, when i access http://www.mysite.com/, a servlet needs to be called and　the most important thing in this is I need to access HTTP variables like Remote Host, etc. thanks in advance
RE: Tomcat Performance
Maybe it has got something to do with a crappy OS ! Sorry. could'nt resist On RH 7.1 linux, the IBM JDK 1.3 (latest build) runs like a scaled cat. -- Aravind -Original Message- From: Hari [mailto:[EMAIL PROTECTED]] Sent: Friday, 24 August 2001 20:20 To: [EMAIL PROTECTED] Subject: Tomcat Performance Hi, Which JDK gives best performance for TOMCAT 3.2 on Win2k Linux? I heard that IBM jdk will give higher performance but when I run Tomcat using IBM Jdk I feel it is slower than Sun's (on Windows 2000). Kindly advice me in this regard. - Hari. = Hariharasubramanian.R Developer, iEvents, Kumaran Systems (Betawave Solutions) www.kumaran.com www.betawavesolutions.com Reinforcing Your Business Ph: 0091-44-620 2079, 4967 (Extn: 318/328) E-Mail: [EMAIL PROTECTED]
RE: OutOfMemory - Set Java Heap Size?
You can use -Xms128m -Xmx256m which means the heap will start at 128m and grow to 256m, but you are better off testing your app first (use verboseGC) to check the memory usage and then setting both parameters to the same no. (i.e.) -Xms256m -Xmx256m or to a value suitable to your app usage and you will avoid a delay when the copy occurs after the intial setting. I would also suggest that you need to tune up your process, file, inode limits at the OS front. If you are going to run 7 instances of Tomcat on a 512mb machine, you will run out of these fast. If you are running 2.2.x kernel series, it is a wee bit more complicated. 2.4.x series, you are better off. Plenty of stuff on the web on this, but a good point to start is http://people.redhat.com/alikins/system_tuning.html -- Aravind -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Craig R. McClanahan Sent: Saturday, 25 August 2001 11:42 To: Tomcat Users List; Max Hugen Subject: Re: OutOfMemory - Set Java Heap Size? The java command line option you want is actually -Xmx256m to set the maximum heap size. To set this, you can establish an environment variable named TOMCAT_OPTS (Tomcat 3.x) or CATALINA_OPTS (Tomcat 4.x) that contains the command line options to be sent to the JVM. For example: export TOMCAT_OPTS=-Xmx256m $TOMCAT_HOME/bin/tomcat.sh start Craig McClanahan On Sat, 25 Aug 2001, Max Hugen wrote: Date: Sat, 25 Aug 2001 13:00:41 +1000 From: Max Hugen [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED], Max Hugen [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Subject: OutOfMemory - Set Java Heap Size? I run Linux/Apache/Tomcat plus Oracle on a server with 512Mb of memory. I have successfully implemented a couple of Internet applications using JSP, Servlets (plus Oracle) etc. For each application (and client) I start a new Tomcat session, using a custom server.xml for each one. All was ok, until I tried increasing Tomcat sessions from 6 to 7, then I received the java.lang.OutOfMemoryError when starting the Tomcat sessions. I've read through many of the posts on this subject, some of which suggest to increase the heap size. Unfortunately, I'm a newbie to Java (and Linux and JSP and Oracle g) so I don't know how to either check this heap size, nor how to permanently set it to a value via a script using a switch like -Xms256m. The script I use to start Tomcat follows, plus the console output. Could anyone advise how to set the heap please? Many thanks, Max Hugen [EMAIL PROTECTED] Hugen Enterprises Pty Ltd, Sydney, Australia www.hugen.com.au Internet Application Developers Script Start echo Tomcat Startup ~ echo Start an instance of Tomcat for hugen /usr/local/tomcat/bin/startup.sh -f /usr/local/tomcat/conf/server_he.xml echo Start an instance of Tomcat for yass3i /usr/local/tomcat/bin/startup.sh -f /usr/local/tomcat/conf/server_yass3i.xml echo Start an instance of Tomcat for isp /usr/local/tomcat/bin/startup.sh -f /usr/local/tomcat/conf/server_isp.xml echo Start an instance of Tomcat for im2000i /usr/local/tomcat/bin/startup.sh -f /usr/local/tomcat/conf/server_im2000i.xml echo Start an instance of Tomcat for secure /usr/local/tomcat/bin/startup.sh -f /usr/local/tomcat/conf/server_secure.xml echo Start an instance of Tomcat for aedo /usr/local/tomcat/bin/startup.sh -f /usr/local/tomcat/conf/server_aedo.xml echo Start an instance of Tomcat for ncap /usr/local/tomcat/bin/startup.sh -f /usr/local/tomcat/conf/server_ncap.xml # Give Tomcat time to start before restarting Apache. echo Waiting 45 secs... sleep 45 # Restart Apache to register Tomcat properly. echo Restart Apache /etc/rc.d/init.d/httpd stop /etc/rc.d/init.d/httpd start sleep 2 echo Ok, we should be in business! Script End Console Output Start Starting tomcat. Check logs/tomcat.log for error messages Starting tomcat. Check logs/tomcat.log for error messages Starting tomcat. Check logs/tomcat.log for error messages Starting tomcat. Check logs/tomcat.log for error messages Starting tomcat. Check logs/tomcat.log for error messages Starting tomcat. Check logs/tomcat.log for error messages Starting tomcat. Check logs/tomcat.log for error messages Restart Apache Exception in thread main java.lang.OutOfMemoryError: unable to create new native thread at java.lang.Thread.start(Native Method) at org.apache.tomcat.util.ThreadPool$ControlRunnable.init(ThreadPool.java:465 ) at org.apache.tomcat.util.ThreadPool.openThreads(ThreadPool.java:360) at org.apache.tomcat.util.ThreadPool.start(ThreadPool.java:148) at org.apache.tomcat.service.PoolTcpEndpoint.startEndpoint(PoolTcpEndpoint.java :245) at org.apache.tomcat.service.PoolTcpConnector.start(PoolTcpConnector.java:188) at org.apache.tomcat.core.ContextManager.start(ContextManager.java:527) at
mod_jk.log messages
I have got TC 3.2.3 with AJP13 connector to Apache on RedHat 7.1 Everything is working fine. I have these messages in the log file for mod_jk [jk_uri_worker_map.c (335)]: jk_uri_worker_map_t::uri_worker_map_close, NULL par ameter [jk_uri_worker_map.c (185)]: In jk_uri_worker_map_t::uri_worker_map_free, NULL p arameters What are they ? -- Aravind
RE: IBM JDK
Works great, similar environment to yours, except I am using the IBM HTTP Server (modifid Apache) v1.3.19 My tests have shown that the IBM JDK is way faster than Sun's for my application scenarios and you can also look at the Volano benchmarks. Aravind -Original Message- From: Mike McGuinness [mailto:[EMAIL PROTECTED]] Sent: Wednesday, 15 August 2001 00:21 To: [EMAIL PROTECTED] Subject: IBM JDK Has anyone tried IBM jdk/runtime environment on Linux with Tomcat 3.2.3? I'v got sun jdk 1.3, running on Red Hat 7.1, with apache 1.3.20, and tomcat 3.2.3. I was wondering how or if IBM's jdk/runtime works. Mike
Tuning Tomcat
Hi, Is there a guideline/doc on tuning Tomcat and it's connectors, (i.e.) Ajp13, mod_jk etc. I can see that there are parameters for max_threads etc. but what is ideal and what are the defaults ? My current config. Redhat 7.1, IBM JDK 1.3, TC 3.2.3, IBM HTTP Server 1.3.19 with mod_jk The reason I am asking is that sometimes there are slight hesitations when delivering a page. It is on a local LAN, so bandwidth is not a problem. -- Aravind
big5 problem with Tomcat on RedHat 7.1
This may not be Tomcat's problem but I am hoping someone will point me in the right direction. I have 2 installations, one Tomcat 3.2.1 on RedHat 6.2 and the other Tomcat 3.2.3 on RedHat 7.1 I have a JSP file with the following tag META http-equiv=Content-Style-Type content=text/css charset=big5 The RedHat 6.2 machine delivers Big5 characters properly, while the RedHat 7.1's Tomcat server does not. Environment is that Tomcat is standalone and the JDK is IBM 1.3 -- Aravind
Solved (was: RE: big5 problem with Tomcat on RedHat 7.1)
Solved the problem. For others interested. By default Tomcat 3.2.1 uses a 8859-1 and 3.2.3 ISO-8859-1 and just explicitly setting the page directive in the JSP overcame the problem. %@ page contentType=text/html; charset=big5 % -- Aravind -Original Message- From: Aravind Naidu [mailto:[EMAIL PROTECTED]] Sent: Saturday, 4 August 2001 21:42 To: [EMAIL PROTECTED] Subject: big5 problem with Tomcat on RedHat 7.1 This may not be Tomcat's problem but I am hoping someone will point me in the right direction. I have 2 installations, one Tomcat 3.2.1 on RedHat 6.2 and the other Tomcat 3.2.3 on RedHat 7.1 I have a JSP file with the following tag META http-equiv=Content-Style-Type content=text/css charset=big5 The RedHat 6.2 machine delivers Big5 characters properly, while the RedHat 7.1's Tomcat server does not. Environment is that Tomcat is standalone and the JDK is IBM 1.3 -- Aravind
RE: VOTE: HTML in Messages and politeness (Was: Re: jdbc odbc bridgeon linux)
+1
RE: TOMCAT VISUAL AGE
Even better. IBM has a Tomcat test environment package available for free It replaces the websphere test environment and works very well http://www7.software.ibm.com/vad.nsf/FrameData/Master?OpenDocumentTitle=Ove rviewFSet=1Doc3=4556Doc4=4567 Been using it for dev, testing and debugging and works like a charm. -- Aravind -Original Message- From: Emir Alikadic (ADNOC IST) [mailto:[EMAIL PROTECTED]] Sent: Monday, 9 July 2001 17:53 To: [EMAIL PROTECTED] Subject: RE: TOMCAT VISUAL AGE 1. Look in your TOMCAT_HOME/lib 2. Unjar == Unpack Hint: Use JDK's jar utility (it's in JAVA_HOME/bin) to unpack JARs, WARs, or EARs. Type jar at command prompt (without any parameters) to get usage help. Cheerioh! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Monday, July 09, 2001 1:37 PM To: [EMAIL PROTECTED] Subject: TOMCAT VISUAL AGE Hello, I have Visual Age Installed, and I am trying to Install and Integrate Tomcat. I have one or two issues: Firstly according to documentation Apache Tomcat Servlet and JSP Development with VisualAge for Java http://www7.software.ibm.com/vad.nsf/data/document2389?OpenDocumentp=1BCT= 1Footer=1 8. Create a new subdirectory called C: \IBMVJava\ide\project_resources\Tomcat Version 3\classes (in your VisualAge for Java installation directory). Unjar the contents of the following four JAR files from Tomcat into this classes subdirectory, maintaining the package-directory structures when you unjar: webserver.jar ant.jar jasper.jar servlet.jar xml.jar However i cannot find these jar files in the TOMCAT downloads?? anyone know where i can find them? Also what exactly does unjar mean?? Tnx Sean
How large can a session object be ?
How large can a session object go in Tomcat ? -- Aravind
Tomcat in production
Hi All, We have been using Tomcat for development and are quite happy with it. I would like to know any success/failure(?) stories of Tomcat as a production servlet/JSP engine. -- Aravind
