APAR status
Closed as program error.
Error description
When an IMS restart is detected in IMS log processing IMS PA forces an end-of-data (EOD) condition which triggers reporting of transactions processed up to that point. As part of the EOD processing the Transit Engine clears its internal queues, but they are not terminated, simply re-used. In the case of MODE=MULT transactions, certain artifacts could be left on the queue(s), in particular those associated with the Unit-of-Recovery (or Rectoken). If the Rectoken was reused after an IMS restart, the existing queue element would be invalid and its use can cause unpredictable results (including ABENDS0C4). S0C4
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: Users of IMS Performance Analyzer V4.5 * **************************************************************** * PROBLEM DESCRIPTION: Abend S0C4 IPI4PROC.REC37+x'546' * **************************************************************** When an IMS restart is detected in IMS log processing IMS PA forces an end-of-data (EOD) condition which triggers reporting of transactions processed up to that point. As part of the EOD processing the Transit Engine clears its internal queues, but they are not terminated, simply re-used. In the case of MODE=MULT transactions, certain artifacts could be left on teh queue, in particular those associated with the Unit-of-Recovery (or Rectoken). If the Rectoken was reused after an IMS restart the existing queue element would be invalid and its use cause unpredictable results (including abend S0C4).
Problem conclusion
When an IMS Restart is detected, this information is passed to the IMS PA Transit Engine as part of its EOD processing. On completion of the EOD process, the Transit Engine terminates its internal queues, forcing them to be initialized afresh for transaction processing after the restart.
Temporary fix
Comments
APAR Information
APAR number
PH53821
Reported component name
IMS PERF ANALYZ
Reported component ID
5655E1500
Reported release
450
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2023-04-11
Closed date
2023-05-03
Last modified date
2023-06-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI91682
Modules/Macros
IPI4PROC IPI4QMGR IPIGGET IPISAPAR
Fix information
Fixed component name
IMS PERF ANALYZ
Fixed component ID
5655E1500
Applicable component levels
R450 PSY UI91682
UP23/05/12 P F305
[{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SG19O","label":"IMS Tools"},"Platform":[{"code":"PF054","label":"z Systems"}],"Version":"450"}]
Document Information
Modified date:
02 June 2023