Adapter exits (DFHDBSTX, DFHDBTOX, DFHDBMOX, and DFHDBSSX)

The adapter statistics exit (DFHDBSTX)

The statistics exit is invoked by the adapter when the CICS®-DBCTL interface has been terminated by the CICS operator using the menu program to request disconnection from DBCTL. The exit is also invoked by the adapter when CICS is terminated in an orderly way.

The function of the exit is to invoke the CICS statistics domain supplying the data that has been returned from the DRA relating to the individual CICS-DBCTL session.

For a /CHECKPOINT FREEZE command, the exit is not invoked, but the statistics domain is called by DFHCDBCT.

The adapter token exit (DFHDBTOX)

The token exit is invoked by the adapter when a task is encountered which has not been allocated a thread token, that is, it has not been through the DBCTL call processor module. This occurs for resynchronization tasks and for the CICS termination invocation.

The adapter monitoring exit (DFHDBMOX)

The monitoring exit is invoked by the adapter when monitoring data has been returned by DBCTL as a result of a PSB schedule request, and a CICS SYNCPOINT or DLI TERM request. The exit passes the data on to the CICS monitoring domain to update the tasks monitoring information.

The adapter status exit (DFHDBSSX)

The status exit is invoked by the adapter in the event of a DRA thread failure, so that resources owned by the failing thread can be transferred to CICS, which then releases the transferred resources during syncpoint processing.