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PI17734: HEAP GROWTH IN ENDPOINT SERVER

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APAR status

  • Closed as program error.

Error description

  • Heap growth in endpoint server
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  Users of WebSphere Extended Deployment      *
    *                  Compute Grid 8.0 and the batch function     *
    *                  of WebSphere Application Server 8.5.        *
    ****************************************************************
    * PROBLEM DESCRIPTION: A memory leak in an endpoint server     *
    *                      can leak to heap growth                 *
    *                      and OutOfMemoryError, in the event      *
    *                      that job usage accounting (charge-back  *
    *                      accounting) is disabled.                *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When job usage accounting is disabled, an entry is cached for
    each job execution but never deleted.   This occurs in the
    endpoint server (the server running the batch application).
    Analysis of the JVM heap (of the endpoint server) will show an
    object of class
    "com.ibm.ws.batch.endpointsensor.impl.SchedulerJobUsageTable"
    holding references to the leaked objects.
    

Problem conclusion

  • The code was fixed to not cache this entry when usage
    accounting is not enabled.
    
    APAR PI17734 is currently targeted for inclusion in Service
    Level (Fix Pack) 8.0.0.4 of WebSphere Compute Grid 8.0.
    
    Please refer to the Recommended Updates page for delivery
    information:
    http://www.ibm.com/support/docview.wss?uid=swg27022998
    

Temporary fix

  • An interim fix is available upon request.
    

Comments

APAR Information

  • APAR number

    PI17734

  • Reported component name

    WXD Z COMP GRID

  • Reported component ID

    5655V6201

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-05-13

  • Closed date

    2014-05-19

  • Last modified date

    2014-05-19

  • 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

    WXD Z COMP GRID

  • Fixed component ID

    5655V6201

Applicable component levels

  • R800 PSY

       UP

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Document Information

Modified date:
28 April 2022