PK96717: LOOP IN IPI4PROC WHEN FLUSHING NON-TRANSACTION QUEUE ELEMENTS FOR HIGH WATER MARK (HWM) PROCESSING

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• If the oldest record on the Originating Transaction queue is an
  ancillary record rather than the transaction at the top
  of a transit set then records are not flushed and queue pointers
  are not updated leading to a loop.
  In IPI4PROC the loop hits about 13 different instructions
  ranging from about x'544' to x'892' within (at the PK94148
  level).
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: IMS Performance Analyzer V4.1 users.         *
  ****************************************************************
  * PROBLEM DESCRIPTION: Loop in IPI4PROC when flushing          *
  *                      non-transaction queue elements          *
  *                      for high water mark (HWM) processing.   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Loop in IPI4PROC when flushing non-transaction queue elements
  for high water mark (HWM) processing.
  If the oldest record on the Originating Transaction queue is
  an ancillary record rather than the transaction at the top of
  a transit set then records are not flushed and queue pointers
  are not updated leading to a loop.
  

Problem conclusion

• Change the order of testing so that a non-active
  top-of-transit-set record is presented as a candidate
  for flushing when HWM hit.
  

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:

  UK50844

Modules/Macros

• IPI4PROC
  

Fix information

• Fixed component name

  IMS PERF ANALYZ

• Fixed component ID

  5655E1500

Applicable component levels

• R410 PSY UK50844

     UP09/10/10 P F910

Fix is available

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