IBM Support

PI67633: Multiple server applications are added to the virtual cluster list

Fixes are available

9.0.0.2: WebSphere Application Server traditional V9.0 Fix Pack 2
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
9.0.0.3: WebSphere Application Server traditional V9.0 Fix Pack 3
9.0.0.4: WebSphere Application Server traditional V9.0 Fix Pack 4
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
9.0.0.5: WebSphere Application Server traditional V9.0 Fix Pack 5
9.0.0.6: WebSphere Application Server traditional V9.0 Fix Pack 6
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
9.0.0.7: WebSphere Application Server traditional V9.0 Fix Pack 7
9.0.0.8: WebSphere Application Server traditional V9.0 Fix Pack 8
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
9.0.0.9: WebSphere Application Server traditional V9.0 Fix Pack 9
9.0.0.10: WebSphere Application Server traditional V9.0 Fix Pack 10
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
9.0.5.4: WebSphere Application Server traditional Version 9.0.5 Fix Pack 4
9.0.5.5: WebSphere Application Server traditional Version 9.0.5 Fix Pack 5
9.0.5.6: WebSphere Application Server traditional Version 9.0.5 Fix Pack 6

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APAR status

  • Closed as program error.

Error description

  • Rapid restarts of applications and servers can lead to a
    situation in which server applications are added to the
    server
    application list multiple times. When deleted these
    references
    are only removed once,resulting in invalid pointers
    remaining in
    the server applications list.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server WAS ND edition- Virtual              *
    *                  Enterprise/IM Component                     *
    ****************************************************************
    * PROBLEM DESCRIPTION: On-demand router (ODR)  crashes when    *
    *                      multiple references to a server         *
    *                      application are added to a virtual      *
    *                      cluster                                 *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When servers and applications are restarted rapidly it's
    possible that a virtual cluster will receive more than one
    reference to an existing server application. When this server
    application gets deleted it is only removed from the cluster
    once. This problem can be discovered by using gdb to examine a
    crash of the system and discovering invalid references in the
    virtual cluster's appList.
    

Problem conclusion

  • This fix ensures that a server application can only be added to
    the virtual cluster once in order to maintain the integrity of
    that list.
    
    The fix for this APAR is currently targeted for inclusion in fix
    pack 8.5.5.11.  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

    PI67633

  • 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

    2016-08-16

  • Closed date

    2016-09-08

  • Last modified date

    2016-10-21

  • 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

[{"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"850","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
14 October 2021