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PI31753: WMQ, ABN=5C6-00C94517,U=SYSOPR ,C=R3600.710.DMC -CSQIORF1,M=CSQGFRCV,LOC=CSQILPLM.CSQIORF1+00000558

A fix is available

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APAR status

  • Closed as program error.

Error description

  • The abend is due do fStrFailed or fLossConn not set in the
    IVSA when CSQIORF1 attempts to orphan an IVSA for a queue on
    a CF structure that is going through failure processing.
    There is a timing window, where if during an the initial open
    of a dynamic shared queue, the structure the queue is on fails
    and goes through failure processing, the IVSA will not have
    the flags set, due to the sqtoken being clear. Later in the
    failure processing it will still attempt to orphan the IVSA,
    which results in the abend seen, and the queue manager to
    unexpectedly terminate.
    
    
    
    Additional Symptom(s) Search Keyword(s): MQ abend CSQIORF1 5C6
    00C94517
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
    *                 Release 1 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: During the first open of a shared       *
    *                      queue, if a failure occurs on the cf    *
    *                      structure the queue is using, the queue *
    *                      manager may abend 5C6 00C94517 in       *
    *                      CSQIORF1. This will also result in      *
    *                      termination of the queue manager with   *
    *                      abend 6C6-00C510AB.                     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    If structure failure processing occurs while the first open
    operation of a shared queue is occurring, there is a timing
    window where failure processing cannot set the status flags in
    the IVSA for the queue, due to open processing not setting the
    sqtoken by this time. Later in structure failure processing,
    when the control blocks on the structure are orphaned, if they
    are currently in use, CSQIORF1 abends 5C6-00C94517 as the status
    flags aren't in the expected state for the IVSA. As failure
    processing occurs on the structure task, this abend results in
    the queue manager terminating, with abend 6C6-00C510AB.
    

Problem conclusion

  • Failure processing has been updated to correctly set the IVSA
    structure status flags before the orphaning processing is
    attempted. This allows the failure processing to complete
    without an abend or the queue manager terminating.
    100Y
    CSQEOSQ
    CSQESTFA
    CSQMOPNI
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    PI31753

  • 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

    2014-12-17

  • Closed date

    2015-02-06

  • Last modified date

    2015-04-29

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

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

    PI32782 UI24996

Modules/Macros

  • CSQEOSQ  CSQESTFA CSQMOPNI
    

Fix information

  • Fixed component name

    WMQ Z/OS V7

  • Fixed component ID

    5655R3600

Applicable component levels

  • R100 PSY UI24996

       UP15/03/04 P F503 ¢

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

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Document Information

Modified date:
29 April 2015