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IV46543: DELAYED SHUTDOWN WHEN THE -P (PRE-EMPTIVE) FLAG IS USED WITH END MQM ON WEBSPHERE MQ VERSION 7

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APAR status

  • Closed as program error.

Error description

  • An extended delay with queue manager shutdown may be observed
    when using the pre-emptive (-p) option for the endmqm command.
    This is the result of WMQ internal monitoring.  WMQ will check
    for the restartable MQ processes and restart any not found to
    be active.  WMQ trace shows that during a pre-emptive end, the
    monitoring process doesn't take into account the current queue
    manager status (ending) and repeatedly restarts the missing
    WMQ processes.  This results in a delay reaching an ended state.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    You may be impacted by this problem if you are using the
    pre-emptive (-p) option for the endmqm command.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows)
    ****************************************************************
    PROBLEM SUMMARY:
    A restartable process such as the amqfqpub process may be
    repeatedly restarted by the queue manager during an endmqm -p
    shutdown. Each time, the restartable process ends because it
    detects that the qmgr is ending; and each time, the queue
    manager restarts it because it is missing. This cycle may repeat
    many times, until the queue manager has completed other shutdown
    work.
    

Problem conclusion

  • The problem has been eliminated by not allowing restartable
    processes to be restarted during queue manager shutdown.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.1
    Platform           Fix Pack 7.1.0.5
    --------           --------------------
    Windows            7.1.0.5
    AIX                7.1.0.5
    HP-UX (Itanium)    7.1.0.5
    Solaris (SPARC)    7.1.0.5
    Solaris (x86-64)   7.1.0.5
    iSeries            7.1.0.5
    Linux (x86)        7.1.0.5
    Linux (x86-64)     7.1.0.5
    Linux (zSeries)    7.1.0.5
    Linux (Power)      7.1.0.5
    
    Version    Maintenance Level
    v7.5       7.5.0.3
    
    The latest available maintenance can be obtained from
    'WebSphere MQ Recommended Fixes'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
    
    If the maintenance level is not yet available information on
    its planned availability can be found in 'WebSphere MQ
    Planned Maintenance Release Dates'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
    ---------------------------------------------------------------
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV46543

  • Reported component name

    WMQ LIN X86 V7

  • Reported component ID

    5724H7224

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-08-02

  • Closed date

    2013-08-28

  • Last modified date

    2013-08-28

  • 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

    WMQ LIN X86 V7

  • Fixed component ID

    5724H7224

Applicable component levels

  • R710 PSY

       UP

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Document Information

Modified date:
09 March 2021