Historical Database (HDB) is a facility that allows
you to manage performance and statistics data for your CICS® transactions.
SMF data is saved in HDB container data sets that are managed from
the CICS PA dialog.
There are three types of HDB:
- Performance List HDB
- A List HDB is built from CMF performance class
data. In a List HDB data set, one record represents one transaction.
Typically, List HDBs are used to analyze recent transaction events.
Data is usually only required for a short period of time. The type
of information and level of detail contained in a List HDB is determined
by the List Template on which it is based.
- Performance Summary HDB
- A Summary HDB is built from CMF performance class
data. In a Summary HDB data set, one record represents a summary
of transaction activity over a user-specified time interval. Typically,
Summary HDBs are used for long-term trend analysis and capacity planning.
Data is retained for a longer period of time, sometimes years. The
type of information and level of detail contained in a Summary HDB
is determined by the Summary Template on which it is based.
- Statistics HDB
- A Statistics HDB contains collections of CICS statistics
and server statistics and CICS Transaction
Gateway statistics over a specified time interval.
You can run reports against your HDB, export the HDB
data to DB2® tables, or export the HDB data to extract
data sets in CSV format.