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PM21262: PERFORMING LOOKUP OF SAME OBJECTPOOLMANAGER FROM MULTIPLE THREADS, CWPMI0023W WAS ISSUED

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APAR status

  • Closed as program error.

Error description

  • When an application performs lookup of the same
    ObjectPoolManager from multiple threads the following warning
    can occur :
    
    [8/26/10 12:03:39:593 IST] 00000063 PmiRegistry W
    CWPMI0023W: Unable to register PMI module due to duplicate name:
    ObjectPool_pool/samplepool_TestPoolableBean.class@72f272f2
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server V7.0                                 *
    ****************************************************************
    * PROBLEM DESCRIPTION: When performing a lookup of the same    *
    *                      ObjectPoolManager from multiple         *
    *                      threads CWPMI0023W can occur            *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When performing a lookup of the same ObjectPoolManager from
    multiple threads, each lookup resulted in the creation of a
    different ObjectPoolManager object. Because of this there were
    attempts to register the same ObjectPoolMBeanName multiple
    times, causing the warning CWPMI0023W from Performance
    Monitoring Infrastructure (PMI). The issue was due to the
    ObjectPoolManagerFactory class returning a different
    ObjectPoolManager for each lookup of ObjectPoolManager.
    

Problem conclusion

  • The ObjectPoolManagerFactory code has been updated such that
    it returns the same ObjectPoolManager.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 7.0.0.17  Please refer to the Recommended Updates
    page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM21262

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-08-26

  • Closed date

    2010-11-17

  • Last modified date

    2010-11-17

  • 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

    WEBS APP SERV N

  • Fixed component ID

    5724H8800

Applicable component levels

  • R700 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 7.0

Reference #: PM21262

Modified date: 17 November 2010