A fix is available
APAR status
Closed as program error.
Error description
After migrating to z/VSE 5.1, some customers reported incorrect statistics from various monitoring tools. In particular were WAITS and VSAM response times of zero. Also some DL/I monitoring tools may not have captured any data. This was a result of certain I/O EXCPADs not being driven. This could also lead to unsatisfactory terminal response times (performance) in CICS because CICS does not get control. A performance degradation was also reported with the use of compressed files.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: all users * * * * * **************************************************************** * PROBLEM DESCRIPTION: 1. Missing EXCPAD calls for CICS TS * * and DL/I * * 2. Compression performance degradation * * in comparison with 4.2 * **************************************************************** * RECOMMENDATION: * **************************************************************** Under certan conditions some of EXCPAD calls for CICS TS and DL/I are not properly handled in IKQIOD and IKQBFC
Problem conclusion
1. Certain code changes in IKQIOD; IKQBFC; IKQBRP and IKQOPN required for proper handling of all types of EXCPAD calls including cases for Exit routines in 24bit storage. 2. Eliminating excessive GETVIS/FREEVIS calls in IKQRCPI to improve compression performance.
Temporary fix
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Comments
APAR Information
APAR number
DY47407
Reported component name
VSE/VSAM
Reported component ID
5686CF905
Reported release
51C
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2012-08-01
Closed date
2012-08-22
Last modified date
2013-04-23
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UD53867
Modules/Macros
IKQBFC IKQBRP IKQIOD IKQOPN IKQRCPI
Fix information
Fixed component name
VSE/VSAM
Fixed component ID
5686CF905
Applicable component levels
R51C PSY UD53867
UP12/08/27 P E512
Fix is available
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Document Information
Modified date:
11 December 2020