The START system initialization parameter
The START system initialization parameter has the following values.
- START=AUTO
- If you specify this value for the START system initialization parameter, CICS® determines whether to perform an initial, cold, warm, or emergency start by inspecting two records in the global catalog:
- The recovery manager control record
- The recovery manager autostart override record.
START=AUTO should be the normal mode of operation, with the choice of start being made by CICS automatically.
- START=INITIAL
- The new run of CICS has no reference to any previous run. The global catalog and system log are initialized, and all information in them is lost.
- START=COLD
- The new run of CICS has limited reference to the previous run, and uses the same global catalog and system log. In particular, resynchronization information needed by remote systems to resynchronize their units of work is preserved.
- START=STANDBY
- CICS starts up as an XRF alternate CICS region, by initializing only to the point at which it can monitor the active CICS region. Depending on how the active CICS region was shut down, the alternate CICS region completes either a warm or emergency restart, if it needs to take over, as follows:
- If the active CICS region was shut down with a successfully completed CEMT PERFORM SHUTDOWN TAKEOVER command, the alternate CICS region performs a warm start.
- If the active CICS region was shut down abnormally, the alternate CICS region performs an emergency restart.
Note: You must also specify the XRF=YES system initialization parameter.