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PM79567: Near continuous stream of ODCF8532I and ODCF8533I messages encountered in star topology configuration.

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APAR status

  • Closed as program error.

Error description

  • A near continuous stream of ODCF8532I and ODCF8533I messages
    are output to SystemOut.log when a star topology has been
    configured such that there are more active and connected point
    cells than there are processes in the center cell.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  Users of IBM WebSphere Application Server   *
    *                  V8.5 Network Deployment edition leveraging  *
    *                  Intelligent Management multi-cell star      *
    *                  topology configurations.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: A stream of ODCF8532I and ODCF8533I     *
    *                      messages are output in star             *
    *                      topologies configured with a large      *
    *                      number of cells.                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A near continuous stream of ODCF8532I and ODCF8533I messages
    are output to SystemOut.log when a star topology has been
    configured such that there are a large number of small active
    point cells connected to a similarly small center cell.
    

Problem conclusion

  • A new Intelligent Management P2P neighbor maintenance
    algorithm had been implement to avoid the neighbor churn
    indicative of the excessive amount of ODCF8532I and ODCF8533I
    messages. The new neighbor algorithm is suited for star
    topologies with a large number of very small linked cells that
    exhibit the near continuous stream of ODCF8532I and ODCF8533I
    messages. The new neighbor maintenance algorithm can be
    enabled by setting cell custom property son.structuredGateways
    with a value of true and cycling all running processes. If
    enabling the new neighbor maintenance algorithm in an existing
    star topology, enable it on the center cell first followed by
    all point cells.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 8.5.5.1.  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

    PM79567

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2012-12-20

  • Closed date

    2013-06-13

  • Last modified date

    2013-06-13

  • 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

  • R850 PSY

       UP

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Document Information

Modified date:
12 January 2022