PK82020: IMS PA JOB GOES INTO A LOOP WHICH MAY RESULT IN ABENDS878

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• An IMS PA job goes into a loop, because an ancillary
  transaction queue keeps growing until IMSPA exhausts virtual
  storage allocated for internal queues.  These transactions are
  waiting for x'07' (or x'56FA') records to provide accounting
  information, and may not in fact complete in the scope of the
  input log files. If storage is allocated for a queue not subject
  to internal high-water mark processing, an ABEND878 will occur.
  The loop occurs in IPI4QMGR near x'382'.
  
  Additional Symptom: ABEND0C4 ABENDS0C4 IPI4PRA1 x'a92'
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All IMS Performance Analyzer V4.1 users.     *
  ****************************************************************
  * PROBLEM DESCRIPTION: IMS PA job goes into a loop which may   *
  *                      result in ABEND878.                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An IMS PA job goes into a loop, because an ancillary
  transaction queue keeps growing until IMSPA exhausts
  virtual storage allocated for internal queues. These
  transactions are waiting for X'07' (or x'56FA') records
  to provide accounting information, and may not in fact
  complete in the scope of the input log files. If storage
  is allocated for a queue not subject to internal
  high-water mark processing, an ABEND878 will occur.
  

Problem conclusion

• Flush transaction entries from the ancillary queue when
  queue exceeds 32K entries. These transactions may then
  be passed to record processors at a completion level which
  does not include accounting information from x'07' log
  records. Add extra code to validate storage chains to
  identify potential 'orphan' queue entries.
  

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:

  UK45588

Modules/Macros

• IPIGGET  IPI4QMGR
  

Fix information

• Fixed component name

  IMS PERF ANALYZ

• Fixed component ID

  5655E1500

Applicable component levels

• R410 PSY UK45588

     UP09/04/13 P F904

Fix is available

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