PM54109: Resolve multiple issues when using WebSphere eXtreme Scale session replication.

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APAR status

  • Closed as program error.

Error description

  • Applying this fix resolves the following issues:
    
    1. When setting replicationInterval=0, LockTimeoutException
    exceptions cause browsers to hang when the web application
    handles multiple requests for the same session at the same time.
    2. When session affinity is not enabled, long browser sessions
    involving multiple requests can eventually lead to
    application servers going out of memory.
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of WebSphere eXtreme Scale        *
    *                  Version 7.1.0.3 for HTTP session            *
    *                  replication                                 *
    ****************************************************************
    * PROBLEM DESCRIPTION: Multiple problems are fixed,            *
    *                      including OutOfMemory and LockTimeout   *
    *                      exceptions on the application server.   *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    This fix addresses multiple problems users might encounter
    while
    running HTTP session replication scenarios using eXtreme Scale:
    1. If session affinity is lost, application server JVMs can go
    out of memory.
    2. LockTimeoutException exceptions occur when
    replicationInterval=0 and multiple requests are serviced for
    the same session at the same time.
    

Problem conclusion

  • The code has been updated to address these issues.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM54109

  • Reported component name

    WS EXTREME SCAL

  • Reported component ID

    5724X6702

  • Reported release

    711

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-12-12

  • Closed date

    2012-02-02

  • Last modified date

    2012-02-02

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    WS EXTREME SCAL

  • Fixed component ID

    5724X6702

Applicable component levels

  • R711 PSY

       UP



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Document information


More support for:

WebSphere eXtreme Scale

Software version:

711

Reference #:

PM54109

Modified date:

2012-02-02

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