IC90363: MQGET FAILING WITH MQRC_TRUNCATED_MSG_FAILED DESPITE THE BUFFER LENGTH = DATA LENGTH

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APAR status

  • Closed as program error.

Error description

  • MQ FTE generates group of messages. MQGET of the group of
    messages fails with rc2080
    (MQRC_TRUNCATED_MSG_FAILED ).
    A C++ client application uses following options to get the
    msgs :
    gmo.WaitInterval = 4000
    gmo.Options = MQGMO_SYNCPOINT ! MQGMO_FAIL_IF_QUIESCING !
    MQGMO_WAIT;
    gmo.Options != (MQGMO_LOGICAL_ORDER ! MQGMO_ALL_MSGS_AVAILABLE);
    It then enters a do/while loop until GroupStatus =
    MQGS_LAST_MSG_IN_GROUP to process each single chunk in the
    group.
    
    If the first MQGET fails with rc2080 the application has been
    designed to set the buffer length = data length.
    
    Despite of the setting , the second MQGET is still failing with
    rc2080 .
    
    The problem does not reproduce when MQ trace is on.
    

Local fix

  • identified three possible workaround :  - start the
    mqseries trace (strmqtrc) - set SHARECNV=0 on svrconn
    channel - modify the getting application to perform the
    second MQGET with a bufferlength = data length + 72bytes
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    You may be impacted by this problem if your are handling grouped
    messages with an embedded MQMDE structure, and getting the
    messages using async consume.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM SUMMARY:
    The problem relates to intermittently incorrect internal
    handling of the MQMDE structure.
    

Problem conclusion

  • The internal handling of the MQMDE structure has been corrected.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following:
    
                       v7.0
    Platform           Fix Pack 7.0.1.11
    --------           --------------------
    Windows            7.0.1.11
    AIX                7.0.1.11
    HP-UX (PA-RISC)    7.0.1.11
    HP-UX (Itanium)    7.0.1.11
    Solaris (SPARC)    7.0.1.11
    Solaris (x86-64)   7.0.1.11
    iSeries            7.0.1.11
    Linux (x86)        7.0.1.11
    Linux (x86-64)     7.0.1.11
    Linux (zSeries)    7.0.1.11
    Linux (Power)      7.0.1.11
    
                       v7.1
    Platform           Fix Pack 7.1.0.4
    --------           --------------------
    Windows            7.1.0.4
    AIX                7.1.0.4
    HP-UX (Itanium)    7.1.0.4
    Solaris (SPARC)    7.1.0.4
    Solaris (x86-64)   7.1.0.4
    iSeries            7.1.0.4
    Linux (x86)        7.1.0.4
    Linux (x86-64)     7.1.0.4
    Linux (zSeries)    7.1.0.4
    Linux (Power)      7.1.0.4
    
    Version            v7.5
    --------           --------------------
    Fix available in:  7.5.0.2
    
    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

    IC90363

  • Reported component name

    WMQ BASE MULTIP

  • Reported component ID

    5724H7241

  • Reported release

    750

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-02-21

  • Closed date

    2013-05-09

  • Last modified date

    2013-06-19

  • 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

  • R750 PSY

       UP



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Document information


More support for:

WebSphere MQ
APAR / Maintenance

Software version:

7.5

Reference #:

IC90363

Modified date:

2013-06-19

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