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IC64827: THE GETENUMERATION() METHOD FOR QUEUEBROWSER RETURNS A SUBSET OF MESSAGES NOT PREVIOUSLY BROWSED. WMQ V6 RETURNS ALL MESSAGES.

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APAR status

  • Closed as program error.

Error description

  • In WebSphere MQ v7.x, a QueueBrowser.getEnumeration() call
    returns only a subset of messages from the queue - those which
    have not been previously browsed. The same is true if more than
    one QueueBrowser is sharing the same session/destination. Each
    will get a set of messages that were not previously browsed.
    
    
    In WebSphere v6.x, the full set of messages is returned each
    time the getEnumeration() called.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    This issue affects WebSphere MQ v7.x classes for Java Message
    Service (JMS) applications that create multiple QueueBrowser
    objects for the same session.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows) +Java
    ****************************************************************
    PROBLEM SUMMARY:
    When multiple QueueBrower objects are created for a single
    session, all the queue browser objects share the same queue
    handle. When the browsing, the queue handle advances only
    further instead of resetting to the top of the queue. Hence,
    when the getEnumeration() call is invoked, the browser will get
    the next available messages in the queue but not the
    messages from the top of the queue.
    

Problem conclusion

  • The WebSphere MQ client has been updated to ensure each
    enumeration created from a QueueBrowser starts from the top of
    the queue.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.0
    Platform           Fix Pack 7.0.1.3
    --------           --------------------
    Windows            U200320
    AIX                U834987
    HP-UX (PA-RISC)    U834414
    HP-UX (Itanium)    U834413
    Solaris (SPARC)    U834986
    Solaris (x86-64)   U834210
    iSeries            tbc_p700_0_1_3
    Linux (x86)        U834415
    Linux (x86-64)     U834985
    Linux (zSeries)    U834412
    Linux (Power)      U835662
    
    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

    IC64827

  • Reported component name

    WMQ WINDOWS V7

  • Reported component ID

    5724H7220

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-11-25

  • Closed date

    2009-12-21

  • Last modified date

    2010-05-18

  • 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 WINDOWS V7

  • Fixed component ID

    5724H7220

Applicable component levels

  • R700 PSY

       UP

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Document Information

Modified date:
18 May 2010