Defining the logger environment for CICS
CICS® uses the MVS system logger for all its logging and journaling requirements.
Using services provided by the MVS system logger, the CICS log manager supports these logs:
- The CICS system
log, which is used for these purposes:
- Dynamic transaction backout
- Warm and emergency restarts
- Cold starts, but only if the log contains information required for resynchronizing indoubt units of work
- Forward recovery logs, autojournals, and user journals.
The MVS system logger is a component of MVS.
It provides a programming interface to access records on a log stream.
For information about the MVS system logger, see the following MVS publications:
- z/OS MVS Setting Up a Sysplex for:
- General information about the MVS system logger.
- Information about defining and formatting the LOGR couple data set.
- Information about how to plan the system logger configuration, plan and set up a system logger application, and plan for recovery for system logger applications.
- z/OS MVS Programming: Authorized Assembler Services Reference (Volume 1) and z/OS MVS Programming: Authorized Assembler Services Reference (Volume 2) for the syntax of system logger services.
- z/OS MVS Initialization and Tuning Reference for information about the COUPLExx PARMLIB member.