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PH15190: MQ V9 ABEND 5C6-00E7014F

A fix is available

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APAR status

  • Closed as program error.

Error description

  • MQ V9
    
    5C6-00E7014F abend occurring due to an XA_COMMIT request
    failing with MQRA_THREAD_BUSY, because this reason is not an
    expected outcome when CSQXADPM calls the queue manager.
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
    *                 Release 0 Modification 0 and Release 1       *
    *                 Modification 0.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: When using XA client connections,       *
    *                      various problems can be seen, including *
    *                      - 5C6-00E7014F in CSQXADPM              *
    *                      - 5C6-00D4007B in CSQMXARH              *
    *                      - 0C4 in CSQMXARH                       *
    *                      - Abnormal queue manager termination    *
    *                      - Uncommitted work being unexpectedly   *
    *                        committed                             *
    ****************************************************************
    When multiple tasks attempt to perform operations on the same
    XA transaction branch, inadequate serialisation could allow
    multiple tasks to run using the EB associated with that
    transaction concurrently.
    Depending on the sequence of operations performed while using
    that EB, a variety of symptoms can occur.
    

Problem conclusion

  • Serialisation between CSQMCPRH and CSQMXARH when switching to
    the EB associated with an XA transaction has been corrected to
    prevent multiple tasks working using the EB for the transaction
    at the same time.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH15190

  • Reported component name

    IBM MQ Z/OS V9

  • Reported component ID

    5655MQ900

  • Reported release

    000

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-08-05

  • Closed date

    2019-09-25

  • Last modified date

    2019-11-01

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

    PH10613

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

    UI65493 UI65494

Modules/Macros

  • CSQMCPRH CSQMXARH
    

Fix information

  • Fixed component name

    IBM MQ Z/OS V9

  • Fixed component ID

    5655MQ900

Applicable component levels

  • R000 PSY UI65493

       UP19/10/29 P F910 ¢

  • R100 PSY UI65494

       UP19/10/29 P F910 ¢

Fix is available

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Document Information

Modified date:
01 November 2019