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IT10181: FDC AD049010 IS GENERATED DURING CHANNEL STARTUP WHEN USING AMQ_DEBUG_DAP AND AMQ_CHECK_SPACE_MAP ENVIRONMENT VARIABLES

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APAR status

  • Closed as program error.

Error description

  • When the following MQ debug environment variables are set
    
     AMQ_DEBUG_DAP
     AMQ_CHECK_SPACE_MAP
    
    the queue manager generates the following FDC when starting
    channels.
    
     Probe Id :- AD049010
     Component :- aduReleaseFileCtl
     Program Name :- amqzlaa0
     Major Errorcode :- STOP
     Probe Type :- HALT6109
     Probe Description :- AMQ6109: An internal WebSphere MQ
     error has occurred.
     ------------------------------------------------------
     MQM Function Stack
     zlaMainThread
     zlaProcessMessage
     zlaProcessSPIRequest
     zlaSPIOpenScratchPad
     zsqSPIOpenScratchPad
     kpiSPIOpenScratchPad
     apiEnquireObject
     aocEnquireObject
     aqmAccessScratchPad
     aqqAccessScratchPad
     aqpReadData
     aqpOpen
     adhOpen
     aduLocateFileCtl
     aduLocateProcFileCtl
     aduReleaseFileCtl
     xcsFFST
    
     The following FDC might also be generated when starting the
    queue manager when the
     environment variables are set.
    
    Probe Id :- XC130004
    Application Name :- MQM
    Component :- xehExceptionHandler
    Program Name :- amqzlaa0
    Major Errorcode :- STOP
    Probe Type :- HALT6109
    Arith1 :- 11 (0xb)
    Comment1 :- SIGSEGV: address not mapped(0xc)
    
     MQM Function Stack
    zlaMainThread
    zlaProcessMessage
    zlaProcessSPIRequest
    zlaSPIOpenScratchPad
    zsqSPIOpenScratchPad
    kpiSPIOpenScratchPad
    apiLoadScratchPad
    aqmLoadScratchPad
    aqhValidateQueue
    aqhIdxToPtrFn
    xcsFFST
    
     The environment variables MQ_DEBUG_DAP and AMQ_CHECK_SPACE_MAP
    are undocumented and reserved for use by IBM MQ support.
    

Local fix

  • Unset the following environment variables and restart the queue
    manager.
    
     AMQ_DEBUG_DAP
     AMQ_CHECK_SPACE_MAP
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users using MQ debug environment variables AMQ_DEBUG_DAP and
    AMQ_CHECK_SPACE_MAP under guidance from IBM MQ support.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    This problem occurred because MQ was incorrectly debugging
    non-queue objects.
    

Problem conclusion

  • MQ has been modified to fix the incorrect debugging of non-queue
    objects.
    
    AMQ_DEBUG_DAP and AMQ_CHECK_SPACE_MAP are MQ environment
    variables are used for MQ debugging
    and not a documented MQ external and are not published.
    Undocumented MQ debugging environment
    variables should not be used unless recommended by IBM MQ
    support.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v7.1       7.1.0.8
    v7.5       7.5.0.6
    v8.0       8.0.0.4
    
    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

    IT10181

  • Reported component name

    WMQ BASE MULTIP

  • Reported component ID

    5724H7251

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-07-20

  • Closed date

    2015-08-20

  • Last modified date

    2015-08-20

  • 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 BASE MULTIP

  • Fixed component ID

    5724H7251

Applicable component levels

  • R800 PSY

       UP

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Document Information

Modified date:
20 August 2015