PH01562: IMS ABEND AFTER CANCEL OF MPP

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• During periods in audit inactivity, the IMS STAP intermittently
  scans the processing queue looking for work to be done. If,
  during this queue scan, new work is added to the processing
  queue, queue processing pointers may be altered causing one of
  the entries in the queue to be skipped. This can result in the
  skipped entry (processing region
   MPP/BMP/IFP etc) to remain in
  a wait state until more audited entries are placed on the
  processing queue and the entry in the wait state can be
  processed. Among others, one result of skipping the queue entry
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of IBM Security Guardium S-TAP for     *
  *                 IMS on z/OS                                  *
  ****************************************************************
  * PROBLEM DESCRIPTION: During periods in audit inactivity, the *
  *                      IMS STAP intermittently scans the       *
  *                      processing queue looking for work to be *
  *                      done.                                   *
  *                                                              *
  *                      If, during this queue scan, new work is *
  *                      added to the processing queue, queue    *
  *                      processing pointers may be altered      *
  *                      causing one of the entries in the queue *
  *                      to be skipped.                          *
  *                                                              *
  *                      This can result in the skipped entry    *
  *                      (processing region  MPP/BMP/IFP etc) to *
  *                      remain in a wait state until more       *
  *                      audited entries are placed on the       *
  *                      processing queue and the entry in the   *
  *                      wait state can be processed.            *
  *                                                              *
  *                      Among others, one result of skipping    *
  *                      the queue entry could be this:          *
  *                      a. MPPs cannot be stopped via the       *
  *                         normal /STOP REGION command and      *
  *                         /STOP REGION nn CANCEL is needed     *
  *                         instead; and                         *
  *                      b. when the /STOP REGION nn CANCEL      *
  *                         command is issued, the IMS Control   *
  *                         Region abends with U0113;            *
  *                      c. STAP-IMS erroneously produces        *
  *                         messages  AUII0601I in combination   *
  *                         with AUII060W, the latter of which   *
  *                         indicates that that the product has  *
  *                         detected a dependent region that     *
  *                         has been waiting for an event to be  *
  *                         audited for at least 15 seconds,     *
  *                         which was not the case.              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Apply the supplied PTF to resolve this issue.
  

Problem conclusion

• N/A
  

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:

  UI58437 UI58438

Modules/Macros

•    AUILOG0B AUILOG0C AUILOG0D AUILOG0E AUILOG0F
  AUILOG0X
  

Fix information

• Fixed component name

  SEC GUAR STAP I

• Fixed component ID

  5655STM00

Applicable component levels

• RA00 PSY UI58437

     UP18/09/25 P F809

• RA13 PSY UI58438

     UP18/09/25 P F809

Fix is available

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