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CESF—sign off
Chapter 13. CESF—sign off
Use the CESF transaction to sign off from the CICS system.
This transaction:
Writes the signoff message to your terminal
Logs the message on the transient data destination
CSCS
Logs any error message on the transient data
destination CSMT.
If you are using CESF to disconnect a terminal and security
is active, a message will still be sent to the log if the signoff
fails. However, this will not stop the terminal being
disconnected if it is a preset terminal or if the terminal is not
signed on.
You cannot use CESF on:
Fixed-format terminals (such as the 3608, the 3614, and
the 3653)
Numeric-only terminals.
For these devices, you must code your own transaction using
the EXEC CICS SIGNOFF command. For programming
information about this command, see the
CICS Application
Programming Reference
manual.
The syntax of the CESF transaction is as follows:
─ ──CESF ──┬ ┬─────────── ─
├ ┤─GOODNIGHT─
└ ┘─LOGOFF────
If you simply type CESF by itself, you are signed off the
CICS system. Your terminal can still start transactions
without you having to request them, and messages can be
sent to it. You can sign on again at that terminal at any time.
The effects of typing CESF with the GOODNIGHT value or
the LOGOFF value depend on the access method in use, as
shown in Table 8:
where:
Disc The terminal is disconnected.
TTI Terminal transaction initiation is allowed.
NOTTI Terminal transaction initiation is not allowed, and
your terminal is placed in RECEIVE status so
that, the next time a connection is made, it can
receive messages.
DISCREQ=YES is an operand of the TYPETERM definition
associated with the terminal, and means that CICS is to
honor a disconnect request. If DISCREQ=NO, a disconnect
request (for example, a CESF LOGOFF request) is not
honored.
If a CESF GOODNIGHT is given when there are outstanding
automatic transaction initiation (ATI) requests, the ATI
requests are actioned and the session is reacquired
irrespective of the RDO options.
Table 8. Effect of CESF LOGOFF and GOODNIGHT with
different access methods
VTAM
DISCREQ=YES
Otherwise
CESF TTI TTI
CESF LOGOFF Disc, TTI TTI
CESF
GOODNIGHT
Disc, TTI NOTTI
Copyright IBM Corp. 1982, 1999 215