IBM Support

PI73712: WMQ: AN INDOUBT XA UOW CAN BE INCORRECTLY COMMITTED DURING SVRCONN CHANNEL DISCONNECTION.

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APAR status

  • Closed as program error.

Error description

  • An indoubt XA UOW can be incorrectly committed during svrconn
    channel disconnection.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All users of IBM MQ for z/OS Version 9 Release 0             *
    * Modification 0.                                              *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * When a SVRCONN is being stopped after XA work has been       *
    * performed using it, during the disconnect processing,        *
    * messages may be incorrectly committed to the queue.          *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When an XA client has previously prepared an XA transaction
    branch, and issues a XA_CLOSE and disconnects, MQ incorrectly
    identifies the state of the transaction state. This leads to MQ
    incorrectly committing the MQ work associated with the XA
    transaction branch during the disconnect processing.
    

Problem conclusion

  • Processing in this scenario has been corrected, to correctly
    identify the state of the XA transaction branch during
    disconnect processing, to ensure the MQ work under the XA branch
    is not incorrectly committed.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI73712

  • Reported component name

    MQ Z/OS V9

  • Reported component ID

    5655MQ900

  • Reported release

    000

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-12-14

  • Closed date

    2017-02-13

  • Last modified date

    2017-02-13

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

    PI70301

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

    UI44606

Modules/Macros

  • CMQXRSRV none
    

Fix information

  • Fixed component name

    MQ Z/OS V9

  • Fixed component ID

    5655MQ900

Applicable component levels

  • R000 PSY

       UP



Document information

More support for: z/OS family

Software version: 9.0

Reference #: PI73712

Modified date: 13 February 2017