The more significant changes for this edition are:
Technical changes
- CICS Performance Analyzer for z/OS (CICS PA) is added, giving information about the CICS® Performance
Analyzer program product, a new reporting tool that provides information on
the performance of CICS systems and applications.
- Using CICS statistics includes new information in the following sections: Interpreting dispatcher statistics and Interpreting JVM statistics.
- Transaction resource class data and Transaction resource class data have information about
transaction resource class data, which can now be collected.
- In Performance class data, there are new or changed performance class
data fields in the following sections: Performance data in group DFHCICS, Performance data in group DFHDATA, Performance data in group DFHPROG, Performance data in group DFHSOCK, and Performance data in group DFHTASK.
- Java applications using a Java virtual machine (JVM): improving performance has further revisions and new information.
- Managing the performance of Secure Sockets Layer support has new information on SSL storage use.
- Database management for performance includes new information on CICS DB2® performance
tuning, and explains the implications for the MAXOPENTCBS system initialization
parameter when CICS is connected to DB2 Version 6 or later and is exploiting the
open transaction environment.
- Specifying the log defer interval (LGDFINT) is added to Logging and journaling: performance considerations.
- In Appendix A. CICS statistics tables, changes are made to the following statistics:
- The sample statistics program DFH0STAT has been restructured -- see Information on DFH0STAT for information. Changes are made to the following DFH0STAT
reports:
- The use of Language Environment® is assumed for CICS based utilities, and is implied in all
programming guidance information. Support for non-Language Environment conforming compilers
is withdrawn. Runtime support is maintained for non-Language Environment conforming compilers
and runtime libraries, but no guidance is given.
Structural changes
- In Appendix A. CICS statistics tables, the statistics reports have been reorganized
so that for each statistics type, all the full reports appear together, followed
by all the summary reports.
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