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IT19036: The MQ logger may release an incorrect amount of memory

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APAR status

  • Closed as program error.

Error description

  • As a result of a defect in the MQ logger, an incorrect amount of
    memory may be freed.
    This can lead to one or more of the following Failure Data
    Caputre (FDC) records:
    
     HL086204 mqlReclaimExtents        xecF_E_UNEXPECTED_RC
                 STOP_ALL
     HL084000 mqlReserveSpace          xecF_E_UNEXPECTED_RC
                 STOP_ALL
     HL006003 hlgWriteLogRecord        hrcE_UNEXPECTED_ERROR
                OK
     HL214091 mllWriteLogPages         hrcE_MQLP_NOSPACE
                    OK
     HL188080 WriteBuffers             hrcE_MQLP_BADLOG
                     OK
     AL004008 almLogIt                 xecF_E_UNEXPECTED_RC
                 hrcE_UNEXPECTED_ERROR
     AT049000 atxPerformCommit         STOP_ALL
                             OK
     AT048003 atxCommit                STOP_ALL
                             OK
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    IBM MQ Server applications using persistent messages
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    An internal programming error caused the amount of log extents
    to be incorrectly released.
    

Problem conclusion

  • IBM MQ has been updated to ensure the correct amount of log
    extents are released.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v7.5       7.5.0.9
    v8.0       8.0.0.7
    
    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

    IT19036

  • Reported component name

    WMQ BASE MULTIP

  • Reported component ID

    5724H7241

  • Reported release

    750

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-01-31

  • Closed date

    2017-05-15

  • Last modified date

    2018-08-01

  • 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

    5724H7241

Applicable component levels

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSCPQ63","label":"APAR \/ Maintenance"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.5","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
01 August 2018