HTTP session manager troubleshooting tips

Use troubleshooting tips for problems creating or using HTTP sessions with your web application hosted by WebSphere® Application Server.

Here are some steps to take:
  • View the logs for the application server which hosts the problem application:
    1. Look at the messages that are written while each application is starting. Specifically, see the messages that are written between the following two messages:
      Starting application: application
      .....................
      Application started: application
    2. Within these messages related to starting the application, look for any errors or exceptions containing a package name of com.ibm.ws.webcontainer.httpsession. If none are found, this is an indication that the session manager started successfully.
    3. The error message, SRVE0054E: An error occurred while loading session context and web application, indicates that SessionManager did not start properly for a given application.
    4. Look within the logs for any messages related to the Session Manager. These messages are in the format SESNxxxxE for error messages and SESNxxxxW for warning messages, and xxxx specifies the number for the error. Look up the extended error definitions in the Session Manager message table.
    • See Best practices for using HTTP Sessions.

    • Alternatively, a special servlet can be invoked that displays the current configuration and statistics related to session tracking.
      • Servlet name: com.ibm.ws.webcontainer.httpsession.IBMTrackerDebug.
      • It can be invoked from any web module that is enabled to serve by class name. For example, using default_app, http://localhost:9080/servlet/com.ibm.ws.webcontainer.httpsession.IBMTrackerDebug.
      • If you are viewing the module using the serve-by-class-name feature, be aware that this module might be viewable by anyone who can view the application. You can map a specific, secured URL to the servlet instead and disable the serve-servlets-by-classname feature.
    • If you are using database-based persistent sessions, look for problems related to the data source the Session Manager relies on to keep session state information. For details on diagnosing database related problems see Errors accessing a datasource or connection pool

Error message SRVE0079E Servlet host not found after you define a port

Error message SRVE0079E can occur after you define the port in WebContainer > HTTP Transports for a server, indicating that you do not have the port defined in your virtual host definitions. To define the port,
  1. On the administrative console, go to Environment > Virtual Hosts > default_host> Host Aliases> New
  2. Define the new port on host "*"

The application server gets EC3 - 04130007 ABENDs

To prevent an EC3 - 04130007 abend from occurring on the application server, change the HTTP Output timeout value. The custom property ConnectionResponseTimeout specifies the maximum number of seconds the HTTP port for an individual server can wait when trying to read or write data. For instructions on how to set ConnectionResponseTimeout, see HTTP transport custom properties.

If these steps do not address your problem, check to see if the problem has been identified and documented by looking at the available online support (hints and tips, technotes, and fixes). If you do not find your problem referenced on this site, contact IBM® support.

For current information available from IBM Support on known problems and their resolution, see 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.




Related concepts
Best practices for using HTTP sessions
Sessions
Related tasks
Task overview: Managing HTTP sessions
Related reference
HTTP session manager troubleshooting tips
HTTP session problems
Related information
MustGather: Sessions and session management problems in WebSphere Application Server
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Last updatedLast updated: Sep 19, 2011 3:08:41 PM CDT
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