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IT17341: QUEUE MANAGER REPORTING HL214091 MLLWRITELOGPAGES HRCE_MQLP_NOSPACE AND/OR HL188080 WRITEBUFFERS HRCE_MQLP_BADLOG

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APAR status

  • Closed as program error.

Error description

  • MQ V7.5 queue manager produces Failure Data Capture (FDC)
    records indicating:
    
    amqzmuc0 HL214091 mllWriteLogPages hrcE_MQLP_NOSPACE
    ...
    amqzlaa0 HL006003 hlgWriteLogRecord hrcE_UNEXPECTED_ERROR
    ...
    amqzmuc0 HL188080 WriteBuffers hrcE_MQLP_BADLOG
    ...
    
    along with:
    
    AMQ6125: An internal WebSphere MQ error has occurred.
    
    accompanied by:
    
    AMQ7472: Object <QUEUE_NAME>, type queue damaged.
    

Local fix

  • Restart the queue manager.
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    All users of MQ
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    A timing window meant that it was possible for insufficient
    serialization to be applied when multiple threads were writing
    to the log, leading to the inconsistency being reported by the
    MQ Logger via the FDC records above.
    

Problem conclusion

  • MQ code has been modified to ensure appropriate serialization
    when writing log records.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v7.1       7.1.0.9
    v7.5       7.5.0.8
    v8.0       8.0.0.6
    
    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

    IT17341

  • 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

    2016-10-04

  • Closed date

    2016-10-28

  • Last modified date

    2017-02-10

  • 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:
10 February 2017