There are three types, or "classes", of monitoring data that
you can request CMF to collect: performance class, exception class,
and transaction resource class data.
You can switch CICSĀ® monitoring
on or off, and change the classes of data being collected, either
at CICS initialization or dynamically
while CICS is running. It is
preferable to start all classes of monitoring data at CICS initialization. If you activate a class
of monitoring data while CICS is
running, the data for that class becomes available only for transactions
that are started thereafter.
CICS PA analyzes
three classes of CMF data:
- Performance class data. Detailed transaction-level information,
such as the processor and elapsed time for a transaction, or the time
spent waiting for I/O. There is at least one performance record per
transaction.
- Exception class data. Information about exceptional conditions
suffered by a transaction, such as queuing for file strings, or waiting
for temporary storage. This data highlights possible problems in system
operation. There is one exception record for each exception condition.
- Transaction resource class data. Additional transaction-level
information about individual Files and Temporary Storage Queues used
by a transaction.