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IC81583: WebSphere MQ cluster queues become invisible to other queue managers where multiple clusters are in use

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APAR status

  • Closed as program error.

Error description

  • WebSphere MQ V6 or V7 queues become "missing" from clusters.
    
    Application calls to MQOPEN (sometimes MQPUT1, MQPUT) suffer
    queue name lookup errors (Examples: 2085, 2082) when they try to
    access the affected cluster queues.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    This problem can affect systems in which a Full Repository has
    recently changed the list of clusters in which it hosts a Full
    Repository, or has ceased to be a Full Repository.  It has also
    been seen to affect systems in which REFRESH CLUSTER has been
    run on a Full Repository queue manager.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows)
    ****************************************************************
    PROBLEM DESCRIPTION:
    At the point in time when a new Full Repository (FR) queue
    manager ceases to host a Full Repository for a particular
    cluster, details of this change are sent to Partial Repository
    (PR) queue managers, which then perform some processing.
    
    The processing includes an enumeration over all subscriptions
    previously made by this PR to this FR, and some processing of
    these subscriptions takes place.  For each such subscription, if
    it is determined that an insufficient set of subscriptions would
    remain after deleting it, then up to 2 new subscriptions are
    made via other CLUSSDR channels for a FR or FRs in that cluster.
    
    If such subscriptions were ever needed then the new
    subscriptions made at this point in time were MISSING a vital
    piece of information.  This information prevented the newly made
    subscriptions being used properly to refresh the knowledge of
    the queues to which they referred.
    

Problem conclusion

  • The WebSphere MQ product code has been corrected such that, in
    the scenario above, subscriptions that are made will HAVE the
    vital piece of information they need.  They will then function
    correctly to refresh the knowledge of the queues to which they
    referred.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v6.0
    Platform           Fix Pack 6.0.2.12
    --------           --------------------
    Windows            U200331
    AIX                U842074
    HP-UX (PA-RISC)    U842208
    HP-UX (Itanium)    U842213
    Solaris (SPARC)    U842209
    Solaris (x86-64)   U842216
    iSeries            tbc_p600_0_2_12
    Linux (x86)        U842210
    Linux (x86-64)     U842215
    Linux (zSeries)    U842211
    Linux (Power)      U842212
    Linux (s390x)      U842214
    
                       v7.0
    Platform           Fix Pack 7.0.1.9
    --------           --------------------
    Windows            U200337
    AIX                U849391
    HP-UX (PA-RISC)    U849723
    HP-UX (Itanium)    U849728
    Solaris (SPARC)    U849724
    Solaris (x86-64)   U849730
    iSeries            7.0.1.9
    Linux (x86)        U849725
    Linux (x86-64)     U849729
    Linux (zSeries)    U849726
    Linux (Power)      U849727
    
                       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

    IC81583

  • Reported component name

    WMQ WINDOWS V7

  • Reported component ID

    5724H7220

  • Reported release

    701

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2012-02-22

  • Closed date

    2012-04-18

  • Last modified date

    2016-08-02

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

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

    PM62817

Fix information

  • Fixed component name

    WMQ WINDOWS V7

  • Fixed component ID

    5724H7220

Applicable component levels

  • R701 PSY

       UP

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Document Information

Modified date:
02 August 2016