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IV14091: WMQ V6 CLASSES FOR JMS APPLICATION ATTEMPT TO SEND A MESSAGE TO A WMQ QUEUE AND RECEIVES A JAVA JAVA.LANG.CLASSCASTEXCEPTION

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APAR status

  • Closed as program error.

Error description

  • A WebSphere MQ classes for JMS application was using the
    WebSphere MQ V6.0.2.1 classes for JMS to send JMS messages
    which had originated from non-WebSphere MQ JMS provider, which
    was working without fault.
    
    The WebSphere MQ classes for JMS was upgraded to version
    6.0.2.9, and then when the JMS application attempted to send a
    message to the WebSphere MQ queue, it received the following
    'ClassCastException' exception:
    
    java.lang.ClassCastException: progress.message.jimpl.Queue
    at com.ibm.mq.jms.MQJMSMessage.setHeaderFromMQMD(MQJMSMessage
    .java:985)
    at com.ibm.mq.jms.MQMessageProducer.sendInternal(MQMessagePro
    ducer.java:1813)
    at com.ibm.mq.jms.MQMessageProducer.send(MQMessageProducer.ja
    va:1139)
    at com.ibm.mq.jms.MQMessageProducer.send(MQMessageProducer.ja
    va:1215)
    
    and the message was not sent to the WebSphere MQ queue.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    This problem affects users of WebSphere MQ V6 classes for JMS,
    who are sending messages to WebSphere MQ which have originated
    from a non-WebSphere MQ JMS provider, and the JMSReplyToQueue
    is populated with a non-WebSphere MQ formatted value.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows) +Java +Java zOS
    ****************************************************************
    PROBLEM SUMMARY:
    When the WebSphere MQ V6 classes for JMS sends a message to a
    WebSphere MQ queue, it attempts to populate the the fields of
    the WebSphere MQ message with values from the JMS message.
    
    One of these fields is the JMQReplyTo field, which provides
    JMS provider specific data about a JMS Destination.
    
    APAR IZ15279:
    
    http://www.ibm.com/support/docview.wss?uid=swg1IZ15279
    
    introduced a code change which was included in WebSphere MQ
    v6.0.2.4 classes for JMS such that if the ReplyToQmgr name was
    not specified on the JMS message, the ReplyToQmgr name was
    populated with the local queue manager name when sending a
    message to the WebSphere MQ queue.
    
    This code change involved the casting of the JMSReplyTo field
    to a "MQQueue" object, which resulted in a ClassCastException
    if the JMSReplyTo field had not originated from the WebSphere
    MQ messaging provider, for example where JMS message had been
    consumed from a non-IBM JMS messaging provider before the
    attempt was made to send it to WebSphere MQ.
    

Problem conclusion

  • The WebSphere MQ classes for JMS has been changed to prevent the
    ClassCastException from occurring when a message does not have
    a WebSphere MQ compatible JMSReplyTo value.
    
    This permits the WebSphere MQ v6 classes for JMS to once again
    send messages to WebSphere MQ queues where the message has
    originated from a non-WebSphere MQ messaging provider.
    
    
    ---------------------------------------------------------------
    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
    
    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

    IV14091

  • Reported component name

    WMQ LIN X86 V6

  • Reported component ID

    5724H7204

  • Reported release

    602

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-01-25

  • Closed date

    2012-04-29

  • Last modified date

    2012-04-29

  • 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

  • R602 PSY

       UP

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Document Information

Modified date:
29 April 2012