Log entries that must be merged are written to the same log stream.
The logging flow is as follows:
- Each subsystem (CICS®, SMSVSAM, or RRS) sends log entries
to the system logger, IXGLOGR.
- The system logger writes log entries, not only to log streams
in the coupling facility, but also to the local buffer in the IXGLOGR
data space.
- If you set up DASD staging data sets (optional), the system logger
also writes log entries to the DASD staging data sets.
- If the utilization reaches the HIOFFLOAD value set in your LOGR
policy, the system logger moves the log entries to DASD log data sets.
This process is called offloading.
- If a DASD log data set becomes full, the system logger allocates
a new one.
- When offloading is complete, the system logger deletes the offloaded
log entries from the coupling facility, from the local buffers in
the IXGLOGR data space, and from the DASD staging data sets.