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PM98591: DUMP TITLE=CSQ1,ABN=5C6-00C5101A,U=SYSOPR ,C=R3600.710.CFM -CSQEBMON, M=CSQGFRCV,LOC=CSQELPLM.CSQEBMON

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APAR status

  • Closed as program error.

Error description

  • DUMP TITLE=CSQ1,ABN=5C6-00C5101A,U=SYSOPR  ,C=R3600.710.CFM
    -CSQEBMON, M=CSQGFRCV,LOC=CSQELPLM.CSQEBMON
    
    00C5101A - CSQE_Invalid_Parm
    Problem is caused by CSQESMON not resetting Strb_Vector_bit_Mask
    after a loss of connectivity.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
    *                 Release 1 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: Abend 5C6-00C5101A occurs at            *
    *                      LOC=CSQELPLM.CSQEBMON following a loss  *
    *                      of connectivity to an application       *
    *                      structure.                              *
    *                      The abend is followed by queue manager  *
    *                      termination S6C6 with REASON=00E50702   *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    An application was waiting for a message to arrive on a shared
    queue, and so list transition processing was enabled for the
    queue. The queue manager lost connectivity to the application
    structure hosting the shared queue, and connection loss
    processing created a new STRB cloned from the STRB for the prior
    connection.
    After connectivity was restored and the queue manager had
    reconnected to the structure, a list transition occurred on
    the structure due to the shared queue being opened by another
    application.
    As the queue had been configured for triggering, the list
    transition exit incorrectly determined that it should try and
    create a trigger message, based on the STRB_vector_bit_mask
    entry for the queue still indicating that the queue should be
    monitored.
    The attempt to create the trigger message failed because the
    initiation queue did not exist, and CSQEBMON was called to
    reenable monitoring of the queue.
    However, because the queue was still in the process of being
    opened and had not yet stored the sqtoken for the queue, this
    led to CSQEBMON being called with invalid parameters and led
    to the reported abend.
    

Problem conclusion

  • CSQECLOS is changed to clear the STRB_Vector_Bit_Mask field when
    disconnecting from a structure following a loss of connectivity
    event, so that after the structure is reconnected, list
    transition processing does not attempt to process a queue that
    has not been fully opened.
    100Y
    CSQECLOS
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

APAR Information

  • APAR number

    PM98591

  • Reported component name

    WMQ Z/OS V7

  • Reported component ID

    5655R3600

  • Reported release

    100

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2013-10-07

  • Closed date

    2014-01-29

  • Last modified date

    2014-04-02

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

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

    UI14615

Modules/Macros

  • CSQECLOS
    

Fix information

  • Fixed component name

    WMQ Z/OS V7

  • Fixed component ID

    5655R3600

Applicable component levels

  • R100 PSY UI14615

       UP14/03/04 P F403 Ž

Fix is available

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Document Information

Modified date:
02 April 2014