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IT30224: Queue manager crashes then cannot be restarted: FDC with probe HL080077

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Failure data capture (FDC) files are written with the following
    details, and the queue manager immediately ends and cannot be
    restarted.
    
    Probe Id          :- HL080077
    Component         :- mqlOpenLogExtent
    Major Errorcode   :- hrcE_MQLP_EXT_BAD_FORMAT
    Probe Description :- AMQ6762E: IBM MQ log extent  corrupt.
    
    MQM Function Stack
    zmuThreadMain
    zmuLogIOTask
    mqlpgasn
    mqlAddLogFile
    mqlReadFormatResponse
    hpiOpenExtent
    mqlOpenLogExtent
    xcsFFST
    
    The queue manger error log reports:
    AMQ6762E: IBM MQ log extent Snnnnnnn.LOG corrupt.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    All MQ users.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    A very rare timing condition existed where two internal counters
    in one of the Snnnnnnn.LOG files were being incorrectly
    compared, due to a mistake in 16-bit arithmetic.
    

Problem conclusion

  • The mistake in the 16-bit arithmetic has been corrected.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.14
    v9.0 LTS   9.0.0.9
    v9.1 CD    9.1.4
    v9.1 LTS   9.1.0.5
    
    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

    IT30224

  • Reported component name

    IBM MQ BASE MP

  • Reported component ID

    5724H7271

  • Reported release

    910

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-09-09

  • Closed date

    2019-10-31

  • Last modified date

    2019-12-10

  • 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

    IBM MQ BASE MP

  • Fixed component ID

    5724H7271

Applicable component levels

  • R910 PSY

       UP

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Document Information

Modified date:
16 September 2021