PM74653: WVE PERFORMANCE IMPACTED BY LONG DWLM CLIENT LOCK ON ODC

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APAR status

  • Closed as program error.

Error description

  • WVE performance impacted by long DWLM client lock on ODC
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of WebSphere Virtual Enterprise   *
    *                  7.0.0.x.                                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: A long held lock causes performance     *
    *                      issues during session rebalancing.      *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Incoming requests contend for a lock on internal on demand
    configuration data. If a long running operation, such as a
    session rebalance occurs under this lock, requests will be
    delayed longer than necessary. This delay impacts performance.
    

Problem conclusion

  • By default there are no changes to the runtime behavior. To
    avoid the lock caused by long operation duration, set a
    generic Java Virtual Machine argument for "ODR_LockOptimization"
    to "true".
    
    This fix will be included in the next available fix pack for
    WebSphere Virtual Enterprise.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM74653

  • Reported component name

    XD VIRTUAL ENTE

  • Reported component ID

    5724J3403

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-10-09

  • Closed date

    2012-12-12

  • Last modified date

    2012-12-12

  • 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

    XD VIRTUAL ENTE

  • Fixed component ID

    5724J3403

Applicable component levels

  • R610 PSY

       UP



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Document information


More support for:

WebSphere Virtual Enterprise

Software version:

6.1.1

Reference #:

PM74653

Modified date:

2012-12-12

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