Terminating a session from CICS

Sessions can be terminated by CICS® only by using master terminal operator commands.

The master terminal operator can use the CEMT command to release the session by entering:

CEMT SET TERMINAL(tttt) [RELEASED|OUTSERVICE]

In the example, tttt is the SESSNAME on the DEFINE SESSIONS or the TRMIDNT on the DFHTCT TYPE=TERMINAL.

If the master terminal operator specifies RELEASED, the session terminates when any active transaction completes and the session is in a between-brackets state.

If the master terminal operator specifies OUTSERVICE, the session also terminates when any active transactions complete and the session is in a between-brackets state. However, in this case, the session is taken out of service and cannot be used until the master terminal operator places it back into service.

If RELEASED is specified, it initiates an orderly termination between IMS and CICS. Although, from the CICS view, the session might appear to be in warm-start state, it is actually in cold-start state as a result of the SBI/BIS flow.

If OUTSERVICE is specified, the session is left in a warm-start state; that is, CICS requests resynchronization upon reinitiation. In order to initiate a session in cold-start mode, the CICS master terminal operator must specify:

CEMT SET TERMINAL (tttt) COLDACQ.

You can specify RELEASED and OUTSERVICE together.

Recommendation: Although orderly session termination can occur as a result of the CICS application program issuing EXEC CICS DISCONNECT, this approach is not recommended in a normal application. However, an operator-control type of application can be written to use this function.

Any messages relative to the session's termination are sent to transient data destination CSMT.