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IC63315: Command server process (amqpcsea) terminates abnormally due to an access violation. FDC with probe ID XC130031 generated.

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APAR status

  • Closed as program error.

Error description

  • An access violation occurs in the command server process
    leading to it terminating abnormally. An FDC with probe ID
    XC130031 is generated. The FDC originates in the amqpcsea
    process and has the following stack:
    MQM Function Stack
    pcmMain
    pcmProcessMessage
    pcmSendNonDataReplyMsg
    xcsFFST
    
    An application was performing system administration on the
    queue manager by putting PCF messages to the
    SYSTEM.ADMIN.COMMAND.QUEUE when the access violation
    occurred.
    

Local fix

  • Set the queue manager attribute Publish/Subscribe to Enabled.
    With Publish/Subscribe enabled, the application just returns
    the error but the command server is not stopped and there is
    dead-letter queue message.
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Any users of WebSphere MQ who use applications that put PCF
    messages to the SYSTEM.ADMIN.COMMAND.QUEUE.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows)
    ****************************************************************
    PROBLEM SUMMARY:
    The problem was caused by the fact that the MQ command server
    was unable to successfully put a message to a reply queue
    whilst processing a PCF request. A logic error within the code
    path to deal with this situation resulted in a storage
    overwrite which caused the command server to crash.
    

Problem conclusion

  • WebSphere MQ was modified to ensure that the code path dealing
    with rerouting a PCF reply message to a different queue as the
    result of failing to write it to the reply queue did not cause
    the command server to crash.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.0
    Platform           Fix Pack 7.0.1.1
    --------           --------------------
    Windows            U200310
    AIX                U827232
    HP-UX (PA-RISC)    U826485
    HP-UX (Itanium)    U826884
    Solaris (SPARC)    U827125
    Solaris (x86-64)   U827374
    iSeries            tbc_p700_0_1_1
    Linux (x86)        U826321
    Linux (x86-64)     U827231
    Linux (zSeries)    U827105
    Linux (Power)      U826779
    
    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

    IC63315

  • Reported component name

    WMQ WINDOWS V7

  • Reported component ID

    5724H7220

  • Reported release

    701

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-09-22

  • Closed date

    2009-10-28

  • Last modified date

    2009-11-24

  • 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 WINDOWS V7

  • Fixed component ID

    5724H7220

Applicable component levels

  • R701 PSY

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Document Information

Modified date:
24 November 2009