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

Obtain the fix for this APAR.

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 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

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