CICS® statistics contain information about the CICS system
as a whole; for example, its performance and usage of resources. Statistics
data is, therefore, useful both for performance tuning and for capacity
planning.
Statistics are collected during CICS online
processing for later offline analysis. The statistics domain writes
statistics records to a System Management Facility (SMF) data set.
The records are of SMF type 110, subtype 0002.
Note: Monitoring records,
and statistics records produced by the temporary storage shared-queue
server, are also written to the SMF data set as type 110 records.
(Some journaling type 110 records can be written there, too.) You
might find it useful to process the statistics records and the monitoring
records together, because statistics provide resource and system information
that is complementary to the transaction data produced by CICS monitoring.
Statistics records are also written by:
- Temporary storage (TS) data sharing pool server regions. These
records are of SMF type 110, subtype 0003.
- Coupling facility data table (CFDT) server regions. These records
are of SMF type 110, subtype 0004.
- Named counter sequence number server regions. These records are
of SMF type 110, subtype 0005.
CICS produces five types of statistics: interval,
end-of-day, requested, requested reset, and unsolicited.
Important
For detailed information about
the types of CICS statistics, when they are collected, and
how to control their collection, see Introduction to CICS statistics.
Last updated: Thursday, 27 June 2019