Re: close pooled conection-by value or by reference
If you want to make sure the connection is closed/release in any case, put
the close() call inside a finally clause:
Connection connection = DatabaseManager.getConnection();
try {
//jdbc work.
}
finally {
DatabaseManager.closeConnection(connection);
}
This way, whatever happens inside the try block, you are sure
closeConnection will be called (think about an exception being thrown in
the try block...)
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Re: Error 500 messages
The response is being comitted before the erro is being thrown. You need to
set the buffer size to be larger. Its a page directive.
-Tim
Adile Abbadi wrote:
Hi Tim,
Thank you very much - that has helped - however I discovered that the
problem still exists if I have an include within an include - ie.
I have an include called this
jsp:include page=navmenu.jsp flush=false
Inside that include I have another include also with flush set to false -
and I still get a blank page - however if I remove the includes within the
include then the exception is visible. Any ideas on this?
Cheers
Adile
-Original Message-
From: Tim Funk [mailto:[EMAIL PROTECTED]
Sent: July 22, 2005 12:42 PM
To: Tomcat Users List
Subject: Re: Error 500 messages
flush=false
-Tim
Adile Abbadi wrote:
Hi Tim,
Thanx for the information - I forgot about that. I guess the question is
why
did it work in Tomcat 3 and not Tomcat 4 and second is there a workaround
to
get it to work?
Adile
-Original Message-
From: Tim Funk [mailto:[EMAIL PROTECTED]
Sent: July 22, 2005 12:20 PM
To: Tomcat Users List
Subject: Re: Error 500 messages
This line jsp:include page=top.html flush=true will commit the
response
and send html back to the client. Once that is done - no error messages
will
be sent back to the client and you will end up with a blank screen.
-Tim
Adile Abbadi wrote:
Hi Rob,
Thanx for this - this is great - I may have to use this because I think I
have truly found a bug in Tomcat as this issue is not happening on my
Tomcat
3 server. I did a bit more investigation and I found some interesting
things. This is going to be a long email with code and stuff but whoever
wants to read it please do - because the results are weird.
I created the following simple JSP page
%@ page language=java
import=javax.crypto.*,java.sql.*,java.net.*,dbc.DBConnectionManager %
%^M
String query = select * from patient_info where ref_client = 38
and
pat_lname like '%SM'ITH%';;
DBConnectionManager connMgr;
connMgr = DBConnectionManager.getInstance();
Connection Conn = connMgr.getConnection(podb);
Statement SQLS = Conn.createStatement();
ResultSet rs = SQLS.executeQuery(query);
String col1 = null;
String col2 = null;
while(rs.next()) {
col1 = rs.getString(pat_id);
col2 = rs.getString(pat_fname);
%
%=col1%: %=col2%br
br
%
}
rs.close();
SQLS.close();
connMgr.freeConnection(podb,Conn);
%
As you can see I did a syntax error in the query and the error comes to
the
screen as expected
javax.servlet.ServletException: ERROR: syntax error at or near ITH at
character 74
I said that's weird so I tried to compare my complicated JSP files to what
I
have here to see what is different (if I did something wrong) and I found
this
If I add an include at certain parts of the page - I see the result I was
talking about. For example if I do this:
jsp:include page=top.html flush=true
%@ page language=java
import=javax.crypto.*,java.sql.*,java.net.*,dbc.DBConnectionManager %
%^M
String query = select * from patient_info where ref_client = 38
and
pat_lname like '%SM'ITH%';;
DBConnectionManager connMgr;
connMgr = DBConnectionManager.getInstance();
Connection Conn = connMgr.getConnection(podb);
Statement SQLS = Conn.createStatement();
ResultSet rs = SQLS.executeQuery(query);
String col1 = null;
String col2 = null;
while(rs.next()) {
col1 = rs.getString(pat_id);
col2 = rs.getString(pat_fname);
%
%=col1%: %=col2%br
br
%
}
rs.close();
SQLS.close();
connMgr.freeConnection(podb,Conn);
%
I get the error page as I should - however If I move the include to below
the %@ page language=java - I get a blank page!!
Now here is where it gets weirder - if I force a java syntax error like as
follows (I corrected the query):
jsp:include page=top.html flush=true
%@ page language=java
import=javax.crypto.*,java.sql.*,java.net.*,dbc.DBConnectionManager %
%^M
String query = select * from patient_info where ref_client = 38
and
pat_lname like '%SMITH%';;
DBConnectionManager connMgr;
connMgr = DBConnectionManager.getInstance();
Connection Conn = connMgr.getConnection(podb);
Statement SQLS = Conn.createStatement();
ResultSet rs = SQLS.executeQuery(query);
String col1 = null;
String col2 = null;
if (col1.equals(yes) {
//test
}
while(rs.next()) {
col1 = rs.getString(pat_id);
col2 = rs.getString(pat_fname);
%
%=col1%: %=col2%br
br
%
}
rs.close();
SQLS.close();
connMgr.freeConnection(podb,Conn);
%
An error will get thrown to the screen
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 2 in the jsp file: /testdb.jsp
domain missing from html:rewrite html:link etc
I have recently moved ISPs and my sites are experiencing some strange behaviour. Basically on some of my sites (Not just one) and on some of the links (Not just all) When using html:link (A struts tag library) and the other associated tags (rewrite etc) the domain is missing. This is also seen when using the sslext tag library which made me think that it was a Tomcat configuration as opposed to a code specific thing (The code has been tested in development, system test and another live environment). I am going to give out some addresses so that people can see the problem, but hope this won't attract unhelpful UI comments or activity as I know the sites aren't perfect. First customer: http://www.cibustraining.com/view/menu.do?id=1 The links at the bottom Privacy Policy | Terms Conditions have this problem. The code for them is: html:link page=/view/page.do?id=8 title=Privacy PolicyPrivacy Policy/html:link | html:link page=/view/page.do?id=7 title=Terms amp; ConditionsTerms amp; Conditions/html:link Second customer http://www.goodcookshop.com/view/menu.do?id=2 The links in the top right Why become a goodcookshop.com member? and Register me have this problem, although the second has an extra slash after the domain and the first one has no domain. The code for them is: tr td colspan=2sslext:link page=/view/page.do?id=8 title=Why become a goodcookshop.com member?Why become a goodcookshop.com member?/sslext:link/td /tr tr td colspan=2sslext:link page=/registration/begin.doRegister me/sslext:link/td /tr Finally I attach the server.xml for the original working configuration and the new one which seems to be causing problems. Original Server port=18005 shutdown=SHUTDOWN debug=0 Listener className=org.apache.catalina.mbeans.ServerLifecycleListener debug=0/ Listener className=org.apache.catalina.mbeans.GlobalResourcesLifecycleListener debug=0/ Service name=Catalina !-- Define a non-SSL Coyote HTTP/1.1 Connector on port 8080 -- Connector port=18008 enableLookups=false redirectPort=8443 debug=0 protocol=AJP/1.3 / Engine name=Catalina defaultHost=localhost debug=99 Logger className=org.apache.catalina.logger.FileLogger prefix=catalina_log. suffix=.txt timestamp=true debug=99 / Host name=www.goodcookshop.com debug=0 appBase=/web unpackWARs=true autoDeploy=true Aliaswww.thegoodcookshop.com/Alias Aliaswww.goodcookshop.co.uk/Alias Logger className=org.apache.catalina.logger.FileLogger prefix=goodcookshop. suffix=.txt timestamp=true / Context path= docBase= / /Host /Engine Realm className=org.apache.catalina.realm.MemoryRealm / /Service /Server New one ?xml version=1.0? Server port=8108 shutdown=SHUTDOWN debug=0 Service name=Tomcat-Apache Connector className=org.apache.coyote.tomcat5.CoyoteConnector protocol=AJP/1.3 port=8208 minProcessors=5 maxProcessors=75 acceptCount=10 debug=0/ Engine name=alberta debug=0 defaultHost=goodcookshop.com Host name=goodcookshop.com debug=0 unpackWARs=true autoDeploy=true deployXML=true deployOnStartup=false appBase=/home/tgcslimited/tomcat/webapps Aliaswww.goodcookshop.com/Alias Logger className=org.apache.catalina.logger.FileLogger directory=/home/tgcslimited/logs prefix=tomcat. suffix=.txt timestamp=true/ Context path=/ docBase=../../public_html debug=0 reloadable=true/ /Host /Engine /Service /Server Appreciate your time on this one as I didn't have any joy with google. Cheers, Mark - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
how to build tomcat -locally- after downloading all sources to your local box
http://jakarta.apache.org/tomcat/tomcat-5.0-doc/building.html explains the ant-based process in which sources are downloaded from CVS. How do you go if all sources you want to first download locally and ocassionally check them using ant checkout? thing is that when you, for example, do a google search trying not to miss the right one on: 'build tomcat ant source installation compile local' you get ten of thousands of articles Albretch - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[ANN] Apache Jakarta Tomcat v5.5.10-alpha Released
The Apache Jakarta Tomcat team is proud to announce the immediate availability of Tomcat 5.5.10-alpha. This build contains 110 improvements, including bug fixes, enhancements, and documentation updates. There are several interesting new features, such as Apache Portable Runtime (APR)-based HTTP/1.1 and AJP/1.3 protocol handlers with SSL support, an experimental NIO-Socket channel for the AJP/1.3 connector, improved support for Java 5 using the Eclipse 3.1 JDT, clustering support at the Engine and Host levels, and more. The Release notes are available at http://jakarta.apache.org/tomcat/tomcat-5.5-doc/RELEASE-NOTES Please refer to the change log for the list of changes: http://jakarta.apache.org/tomcat/tomcat-5.5-doc/changelog.html Downloads: Binaries: http://jakarta.apache.org/site/binindex.cgi#tomcat-5.5 Sources: http://jakarta.apache.org/site/sourceindex.cgi#tomcat-5.5 The Apache Jakarta Tomcat Team - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
how to get the original requestURI after jsp:forward()
Hello, I have a forward to a jsp-file. This jsp-file needs to know which URI was requested in the initial request. Currently, I can only see the requestURI of the forwarded jsp-file. Any ideas? Regards Marten - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: how to get the original requestURI after jsp:forward()
You need to read SRV.8.4 of the servlet specification. Mark Marten Lehmann wrote: Hello, I have a forward to a jsp-file. This jsp-file needs to know which URI was requested in the initial request. Currently, I can only see the requestURI of the forwarded jsp-file. Any ideas? Regards Marten - 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]
forcing non-cookie sessions?
Hello, is there a way to force tomcat (or a web-container in general) not to use cookies to keep track of sessions, but to use url-rewriting with the ;jsessionid=sessID suffix instead? Regards Marten - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
I can´t add mod_rewrite.so to the module folder in apache http server
Hi, I'm knew with http server and I'm trying to make a load balancer with the http server and two tomcats in linux. I follow the set up instructions and I use: ./configure --enable-module=rewrite --enable-module=proxy and other modules. It compiled and installed without any errors. My problem is: the mod_proxy.so , mod_rewrite.so don't appear anywhere, What do I have to do in order to get these *.so? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: how to get the original requestURI after jsp:forward()
Hi, You need to read SRV.8.4 of the servlet specification. I read it now. However, it's stated there, that path-related-values should be overwritten by the container in all request-dispatcher occurences. This means: include and forward. But for an include, I can see the original requestURI, for an forward, I see the local one. Is there any way to obtain the original one? Unfortunately, there's nothing like request.getSuper().getRequestURI() or similar. Are all references to previous objects cutted? Regards Marten - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: I can´t add mod_rewrite.so to t he module folder in apache http server
Hello, My problem is: the mod_proxy.so , mod_rewrite.so don't appear anywhere, What do I have to do in order to get these *.so? if you don't ask the compiler to create them, they aren't created as shared modules, but are included in the httpd-binary by default. Look at the output of bin/httpd -l, they should appear there. Regards Marten - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
compiling
if i add new jsp file to the a folder in webapps will it be compiled when i access it or i must compile it before accessing it .. thankx - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
What is APR ?
Hi all, Is APR for Tomcat is any native library or java ? Where to get it ? -- rgds Anto Paul - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Blocking public access to certain Context
Hi all, I get this request to configure Tomcat 4.1 so that certain context can be allow to be access through local IP and not through public IP. I'd tried to used the valve tag settings in the Context tag to deny the request but failed. It seems that the tag only denied the configured client IP. Is there any other configuration i can do to block public access to certain context in Tomcat?? Thanx. Regards, F.S. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
how to run more than one tomcat on single machine
Michael. I am a bit new to deployment and related stuff, so can you tell me how to run more than one tomcat on a single machine. Is the process is same as having load balancing tomcat clusters on different machines. or Please direct me towards any documentation on this. I will get the info from there. regards Srikanth On 7/22/05, Michael Kleinhenz [EMAIL PROTECTED] wrote: Peddireddy, your mail is very informative. we have a very similar set up (4 Xeon processors 3.5 GB Ram and WIn2003 Standard edition) and hardpart is that we cant change this setup and switch to Linux. same problem over here. The computing centre of our client can't provide Linux servers. I'm struggling with this problem for 3 weeks now. I heard about clustering on diferent boxes. Is the process of running multiple tomcats on a single machine will be same?? My experience was that with a single Tomcat on a large machine, you'll never use that box fully. Besides that you can't get the Sun JVM to accept a large amount of threads while giving them enough memory, Tomcat seems to have performance problems with 3000+ threads busy at the same time. The BEA JVM (JRockit) performs better in terms of memory and threads but is slower than the Sun JVM. If you have rather complex database operations performed by your webapp, this will get you into trouble, because if there is a single bottleneck in the whole system, the requests will pile up in the server, it hits its thread limit, and ceases operation. So, I have made good experiences with 4 Tomcats on a 2xXeon with 4GB. The server's load is somewhere between 70% and 100% while running with high load and can handle more concurrent requests than a single Tomcat. You talked about some workarounds using esoteric registry keys, can you eloborate on this or tell me where I can get details about it and the details about limitations placed by windows2003 on a single process in terms of number of threads, memory etc. We use 2003 Standard Edition and get the following limitations: . Windows only provides 2GB memory to all applications running, regardless of how much memory you have. All other memory is used for Windows itself. With a registry key, you can extend this to 3GB. I don't have the key handy, but it can be found in MSDN. . The somewhat larger problem is the crappy TCP stack on Windows. A single Tomcat easily handles 1000 concurrent connections, but if I start 4 Tomcats, I get a WSAENOBUFS error (An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full) at about 3300 concurrent connections. Because each Tomcat runs with his own instance of the JVM, I suppose the problem is Windows, the network or anything else that is used by all Tomcats at the same time. Even worse, after such a crash, there is a 10% chance, the Tomcats not resuming normal operation but crashes completely. . Windows has a default limit of 5000 ephemeral ports that can be used fo outgoing connections. This can be changed with the MaxUserPorts registry key. Also, the TcpTimedWaitDelay key is relevant for network performance. Both are described here: http://msdn.microsoft.com/library/en-us/randz/protocol/tcp_time-wait_delay.asp I'm now really irritated by this problem. I need a capacity of about 15000 concurrent connections for my project. I also have 3 2xXeon servers here, but windows (or anything else) doesn't allow more than ~8000 connections until it dies. -- Michael -- Dipl.-Technoinform. Michael Kleinhenz tarent GmbH . Bahnhofstr. 13 . 53123 Bonn fon +49 (228) / 52 67 5-0 . fax +49 (228) / 52 67 5-25 - 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: Problem Bringing up Admin
may be you would have done this but I want to know... whethere you extracted all files from that admin archive (zip or tar) and placed the files in respective folders like admin.xml in catalina home\conf\Catalina\localhost admin folder in catalina home\server\webapps\ Srikanth On 7/22/05, J. Ryan Kelley [EMAIL PROTECTED] wrote: I've installed tomcat 5.5.9 and downloaded the admin package. When I attempt to access http://localhost:8080/admin/ I get a blank screen the first time, then if i reload I get the following error message in my browser. HTTP Status 503 - Servlet admin.login_jsp is currently unavailable *type* Status report *message* _Servlet admin.login_jsp is currently unavailable_ *description* _The requested service (Servlet admin.login_jsp is currently unavailable) is not currently available._ Apache Tomcat /5.5.9 I've read around on several forums, and the usual cause of this seems to be duplicate instances of the file struts.jar, however I can only locate the struts.jar file that is in $CATALINA_HOME/server/webapps/admin/WEB-INF/lib. Is anyone familiar with this problem, I'm sure that it's probably a basic solution, i'm a complete and total newbie to tomcat. Thanks in advance, -- J. Ryan Kelley Trinity Transport, Inc. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
running tomcat on windows as webserver and using it as webcontainer for IIS
Hi , Anyone can tell me whether it is better to run tomcat as stanalone webserver on windows (win 2003 to be specefic) or run it as web container along with IIS I want to know which set up would be preferrable in terms of performance and scalability of application. regards Srikanth.P - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: What is APR ?
http://apr.apache.org/ Anto Paul [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Hi all, Is APR for Tomcat is any native library or java ? Where to get it ? -- rgds Anto Paul - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: basic authentication won't accept password (intermittent)
Hi again, I just discovered bug 33157: basic authentication fails in some cases, reported in Tomcat 5.5.4. http://issues.apache.org/bugzilla/show_bug.cgi?id=33157 It doesn't describe my exact problem, but it's the best theory so far. Unfortunately the hosting provider is unlikely to install 5.5.9 in the near future ;-) Will report back to the list when the resolution is known. Best, Eric:) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
