IBM Support

IZ94587: USING WEBSPHERE APPLICATION SERVER V7 AND WEBSPHERE MQ RA, CLIENT CHANNEL DOES NOT AUTOMATICALLY RECONNECT WHEN RESTARTED.

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APAR status

  • Closed as program error.

Error description

  • Using the following topology:
    WebSphere Application Server v7 and WebSphere MQ Resource
    Adapter
    
    The following error occurs:
    The MQ Client JMS channel does not automatically reconnect when
    it is restarted. This is preventing messages from being read
    from the queue. Users can observe the following error messages:
    
    CWSJY0003W: An exception has been delivered to the connections
    exception listener: 'Message : javax.jms.JMSException:
    MQJMS1107:
    A problem with the connection has occurred.
    CWSJY0003W: An exception has been delivered to the connections
    exception listener: 'Message : javax.jms.JMSException:
    MQJMS1025:
    failed to browse message.
    CWSJY0003W: An exception has been delivered to the connections
    exception listener: 'Message : javax.jms.JMSException:
    MQJMS1107:
    A problem with the connection has occurred. Class : class
    javax.jms.JMSException
    
    The Activation Specification indicates it has successfully
    started with the message:
    
    CWSJY0003W: ActivationSpec 'MyActivationSpec<###>' reconnected
    successfully.
    
    But messages are not delivered to MDBs after reconnection.
    
    These errors are caused by the existence of multiple WebSphere
    MQ Resource Adapter instances per JVM.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    This issue affects users of the WebSphere MQ v6 and v7 Resource
    Adapter, which includes WebSphere Application Server V7 users,
    who make use of Activation Specifications.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows) +Java
    ****************************************************************
    PROBLEM SUMMARY:
    The problem was caused by multiple instances of the WebSphere MQ
    Resource Adapter being present in the JVM. The reconnection
    algorithm assumed that only one Resource Adapter instance occurs
    in a Java Virtual Machine (JVM).
    

Problem conclusion

  • The reconnection logic has been updated to function correctly
    when multiple Resource Adapter instances are present in the same
    JVM.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v6.0
    Platform           Fix Pack 6.0.2.11
    --------           --------------------
    Windows            U200326
    AIX                U839822
    HP-UX (PA-RISC)    U840685
    HP-UX (Itanium)    U840690
    Solaris (SPARC)    U840686
    Solaris (x86-64)   U840693
    iSeries            tbc_p600_0_2_11
    Linux (x86)        U840687
    Linux (x86-64)     U840692
    Linux (zSeries)    U840688
    Linux (Power)      U840689
    Linux (s390x)      U840691
    
                       v7.0
    Platform           Fix Pack 7.0.1.6
    --------           --------------------
    Windows            U200328
    AIX                U840698
    HP-UX (PA-RISC)    U841555
    HP-UX (Itanium)    U841560
    Solaris (SPARC)    U841556
    Solaris (x86-64)   U841562
    iSeries            tbc_p700_0_1_6
    Linux (x86)        U841557
    Linux (x86-64)     U841561
    Linux (zSeries)    U841558
    Linux (Power)      U841559
    
    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

    IZ94587

  • Reported component name

    WMQ LIN X86 V6

  • Reported component ID

    5724H7204

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-02-07

  • Closed date

    2011-02-28

  • Last modified date

    2011-02-28

  • 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 LIN X86 V6

  • Fixed component ID

    5724H7204

Applicable component levels

  • R600 PSY

       UP

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Document Information

Modified date:
28 February 2011