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PH08231: WHEN AN APPLICATION ENCOUNTERS A POSIX SIGNAL SUCH AS SIGXCPU, UNCOMMITTED MQ WORK MAY BE INCORRECTLY COMMITTED.

A fix is available

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APAR status

  • Closed as program error.

Error description

  • When an application encounters a POSIX signal such as SIGXCPU,
    uncommitted MQ work may be incorrectly committed rather than
    rolled back.
    

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 an application encounters a        *
    *                      POSIX signal such as SIGXCPU,           *
    *                      uncommitted MQ for z/OS work is         *
    *                      incorrectly committed rather than       *
    *                      rolled back.                            *
    ****************************************************************
    When an application terminates abnormally, MQ for z/OS work
    gets rolled back.  An application that includes Java can
    encounter errors in the form of POSIX signals such as
    SIGXCPU which will not cause the application to ABEND.
    In such a case, uncommitted MQ for z/OS work is incorrectly
    committed instead of being rolled back.
    

Problem conclusion

  • MQ for z/OS has been updated to ensure that uncommitted work
    will be rolled back when POSIX signals like SIGXCPU
    are detected.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH08231

  • Reported component name

    IBM MQ Z/OS V9

  • Reported component ID

    5655MQ900

  • Reported release

    000

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-02-06

  • Closed date

    2019-08-12

  • Last modified date

    2019-10-01

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

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

    UI64698 UI64699

Modules/Macros

  • CSQ3EOT0
    

Fix information

  • Fixed component name

    IBM MQ Z/OS V9

  • Fixed component ID

    5655MQ900

Applicable component levels

  • R000 PSY UI64698

       UP19/09/26 P F909

  • R100 PSY UI64699

       UP19/09/26 P F909

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:
01 October 2019