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PI63586: The application placement controller can not start or stop the s erver instances in the point cell in a multiple cell topology.

Fixes are available

8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
9.0.0.1: WebSphere Application Server traditional V9.0 Fix Pack 1
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

  • The application placement controller in the center cell can
    not start or stop the server instances of the dynamic
    cluster in the point cell in a multiple cell topology.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server Network Deployment edition- Virtual  *
    *                  Enterprise/IM Component running a star-     *
    *                  topology                                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: APC sporadically cannot take action on  *
    *                      server instances residing in the point  *
    *                      cells of a multiple cell topology.      *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The Application placement controller (APC) can lose the ability
    to take action on server instances residing in the point cells
    of a star-topology following dmgr and nodeagent restarts. The
    issue is caused by a design flaw in the logic used by APC to
    discover and maintain the active HAManagedItem cell agent
    location residing in the point cells that exposes a timing
    window which, under the current design, cannot be closed and
    results in APC attempting to contact a cell agent that is not
    currently active and is therefore unable to take action on
    servers in the point cells.
    

Problem conclusion

  • APAR PI63586 contains a complete redesign of how APC discovers
    and maintains the active HAManagedItem cell agent location
    residing in the point cells and addresses the issue where dmgr
    and nodeagent restarts can cause APC to lose track of the
    current cell agent locations which resulted in the APC's
    inability to take actions on server instances residing in point
    cells.
    
    The fix for this APAR is currently targeted for inclusion in fix
    packs 8.5.5.10 and fix pack 9.0.0.1.  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

    PI63586

  • 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

    2016-06-03

  • Closed date

    2016-08-18

  • Last modified date

    2016-08-18

  • 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:
15 October 2021