This topic provides tips for using the z/OS® Resource
Recovery Services with this
product.
Tips for RRS
Operations
See z/OS MVS Programming:
Resource Recovery, for RRS operations guidelines.
Tips
for RRS
operations:
- If you have configured your logstreams
to the coupling facility, then
monitor your log streams to ensure offload is not occurring. RRS will
perform
better if its recovery logs do not offload.
Avoid trouble: Proper
sizing of the RRS logs is important. Too small and you get reduced
throughput
since logger is off-loading the logs too frequently. Too large and
you could
overflow your coupling facility.
gotcha
- Keep the main and
delayed (only contains active or live data) logs in
your coupling facility. Make sure the CF definitions don't overflow.
Avoid trouble: A commit cannot occur until the
log record is written.
gotcha
- Until you stabilize your workloads,
it is a good idea to use the archive
log. If you have an archive log configured, RRS will unconditionally
use it.
However, there is a performance penalty for using it.