Learn about ways to troubleshoot Web container.
Use the following tips if you are having problems starting a Web module,
or accessing resources within a particular Web module:
- View the JVM logs and process logs for the application
server which hosts the problem Web modules, and look for messages in the JVM
output file which indicate that the web module has started successfully.
You should see messages similar to the following:
WebContainer A SRVE0161I: IBM® WebSphere® Application Server - Web Container.
Copyright IBM Corp. 1998-2002
WebContainer A SRVE0169I: Loading Web Module: [module_name]
ApplicationMg A WSVR0221I: Application started: [application_name]
HttpTransport A SRVE0171I: Transport http is listening on port [port_number]
[server_name] open for e-business in [profile_root]/logs/[server_name]/SystemOut.log
- View the JVM logs and process logs for the application
server which hosts the problem Web modules, and look for messages in the JVM
output file which indicate that the web module has started successfully.
You should see messages similar to the following:
WebContainer A SRVE0161I: IBM WebSphere Application Server - Web Container.
Copyright IBM Corp. 1998-2002
WebContainer A SRVE0169I: Loading Web Module: [module_name]
ApplicationMg A WSVR0221I: Application started: [application_name]
HttpTransport A SRVE0171I: Transport http is listening on port [port_number]
[server_name] open for e-business in profile_root/logs/[server_name]/SystemOut.log
- View the logs for the application server which hosts the
problem Web modules, and look for messages in the JVM output file which indicate
that the web module has started successfully. You should see messages similar
to the following:
WebContainer A SRVE0161I: IBM WebSphere Application Server - Web Container.
Copyright IBM Corp. 1998-2002
WebContainer A SRVE0169I: Loading Web Module: [module_name]
ApplicationMg A WSVR0221I: Application started: [application_name]
HttpTransport A SRVE0171I: Transport http is listening on port [port_number]
[server_name] open for e-business in [profile_root]/logs/[server_name]/SystemOut.log
- For specific problems that can cause servlets, HTML files, and JavaServer
Pages (JSP) files not to be served, refer to the topic, Web resource (JSP
file, servlet, HTML file, image) does not display .
- For a detailed trace of the run-time behavior
of the Web container, enable trace for the component com.ibm.ws.webcontainer
using com.ibm.ws.webcontainer*=all.
If application server related calls fail during Servlet.init method, you
can either:
- Initialize the servlet manually by making a single request to that servlet
in your browser when the server is ready for e-business instead of starting
the servlet upon startup or
- You can choose not to make application server related calls in the servlet's
init method.
If the property to start servlets during application server startup is
enabled, part of its startup process calls the Servlet.init method on its
servlets when you start the Web container. Therefore, when the Web container
is starts and calls the init method, other components such as Naming and Work
Load Management may not be fully started yet. As a result, application server
related calls may not work since all of the application server components
may not be ready yet. Once the application server is 'ready for e-business',
it is completely ready.
If none of these steps fixes your problem, check to see if the problem
has been identified and documented by looking at the available online support
(hints and tips, tech notes, and fixes). If you do not find your problem
listed there contact IBM support.
For current information available from IBM Support on known problems and their
resolution, refer to the IBM Support page.
IBM Support
has documents that can save you time gathering information needed to resolve
this problem. Before opening a PMR, see the IBM Support page.