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IV14401: WMQ V701 PUBLISHED MESSAGES ARE BEING SENT TO THE DEAD LETTER QUEUE REASON CODE MQRC_BACKOUT_THRESHOLD_REACHED 2362.

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APAR status

  • Closed as program error.

Error description

  • WMQ V701 Published messages are coming into the queue manager
    but are being sent to the Dead Letter Queue with reason code
    MQRC_BACKOUT_THRESHOLD_REACHED 2362.
    

Local fix

  • Build subscriptions using the SCSQPROC samples instead of
    using MQ Explorer.
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of MQ V7 Publish/Subscribe.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows)
    ****************************************************************
    PROBLEM SUMMARY:
    WMQ V701 Published messages are coming into the queue
    manager but are being sent to the Dead Letter Queue with
    reason code MQRC_BACKOUT_THRESHOLD_REACHED 2362 and it's not
    clear to the customer what is causing this to occur.
    

Problem conclusion

  • The error codes cannot be relied upon to be set or accurate (for
    example, if a higher priority message arrives on the queue, or
    an earlier uncommitted message is committed, between the 3rd
    back out of a message and the next time it is got). To allow for
    this: - record the message token of the message being processed.
    When checking the back out count this is compared to the message
    token of the message just got. If they're the same, it is the
    same message, and so the error codes are for this message - use
    the appropriate error code; if they're different the last
    message processed was not this message, and so the error codes
    (if any) don't refer to this message. In this case we use
    MQRC_BACKOUT_THRESHOLD_REACHED as before. In cases where none of
    the error codes are set (e.g. MQRC_OBJECT_CHANGED) we use
    MQRC_BACKOUT_THRESHOLD_REACHED as before (preferable to dead
    letter queuing the message with MQRC 0).
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.0
    Platform           Fix Pack 7.0.1.10
    --------           --------------------
    Windows            7.0.1.10
    AIX                7.0.1.10
    HP-UX (PA-RISC)    7.0.1.10
    HP-UX (Itanium)    7.0.1.10
    Solaris (SPARC)    7.0.1.10
    Solaris (x86-64)   7.0.1.10
    iSeries            7.0.1.10
    Linux (x86)        7.0.1.10
    Linux (x86-64)     7.0.1.10
    Linux (zSeries)    7.0.1.10
    Linux (Power)      7.0.1.10
    
                       v7.1
    Platform           Fix Pack 7.1.0.2
    --------           --------------------
    Windows            7.1.0.2
    AIX                7.1.0.2
    HP-UX (Itanium)    7.1.0.2
    Solaris (SPARC)    7.1.0.2
    Solaris (x86-64)   7.1.0.2
    iSeries            7.1.0.2
    Linux (x86)        7.1.0.2
    Linux (x86-64)     7.1.0.2
    Linux (zSeries)    7.1.0.2
    Linux (Power)      7.1.0.2
    
    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

    IV14401

  • Reported component name

    WMQ AIX V7

  • Reported component ID

    5724H7221

  • Reported release

    701

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-01-31

  • Closed date

    2012-07-09

  • Last modified date

    2012-07-09

  • APAR is sysrouted FROM one or more of the following:

    PM53723

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    WMQ AIX V7

  • Fixed component ID

    5724H7221

Applicable component levels

  • R701 PSY

       UP

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Document Information

Modified date:
09 July 2012