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IC58203: MULTI-THREADED WEBSPHERE MQ JAVA CLIENTS FAIL TO CONNECT TO QUEUE MANAGER WHEN USING SHARED CONNECTIONS

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APAR status

  • Closed as program error.

Error description

  • If a WebSphere MQ Java or JMS application attempts to create
    many connections to the same queue manager at the same time,
    with a connection configured to use shared connections, one or
    more of the connections may not complete (i.e. hang), and the
    queue manager may create FDCs containing cciFindConv and probe
    id CO398008.
    

Local fix

  • Disable shared connections.
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    This issue affects WebSphere MQ Java/JMS applications that
    create multiple connections concurrently and use shared
    connections.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows) +Java
    ****************************************************************
    PROBLEM SUMMARY:
    The WebSphere MQ Java/JMS client code responsible for beginning
    a shared connection did not always initiate correctly with the
    queue manager when multiple concurrent connection attempts were
    made.
    

Problem conclusion

  • The WebSphere MQ Java/JMS client code has been updated to
    ensure the initiation takes place correctly when necessary.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.0
    Platform           Fix Pack 7.0.0.1
    --------           --------------------
    Windows            U200301
    AIX                U821414
    HP-UX (PA-RISC)    U820765
    HP-UX (Itanium)    U821296
    Solaris (SPARC)    U820766
    Solaris (x86-64)   U820880
    iSeries            tbc_p700_0_0_1
    Linux (x86)        U821407
    Linux (x86-64)     U821295
    Linux (zSeries)    U821294
    Linux (Power)      U820881
    
    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

    IC58203

  • 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

    2008-10-01

  • Closed date

    2008-10-23

  • Last modified date

    2009-03-10

  • 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

    WMQ WINDOWS V7

  • Fixed component ID

    5724H7220

Applicable component levels

  • R700 PSY

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Document Information

Modified date:
10 March 2009