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UERTBACK
(X'20') Backout.
UERTDGCS
(X'10') Unit of recovery has been lost because of an initial start of
CICS.
UERTDGNK
(X'08') Resource manager should not be in doubt about this unit of
recovery.
UERTWAIT
(X'04') Resource manager must wait for the outcome of this unit of
recovery. This value is set at phase two of a two-phase commit, if CICS
is in-doubt about the outcome of a UOW. It occurs only if the
task-related user exit is enabled with the INDOUBTWAIT option (see
“Enabling for specific invocation-types” on page 280).
UERTRSYN
(X'02') This syncpoint request was generated as the result of an EXEC
CICS RESYNC command.
UERTLAST
(X'01') There are no further units of recovery associated with this task.
Note that when this bit is not set, there may or may not be further units
of recovery. For this reason, it is not recommended that you rely on this
bit to signal end-of-task. You should instead schedule the CICS task
manager to drive you at end-of-task by setting the task manager bit in
the schedule flag word. If you do use UERTLAST to signal end-of-task,
and if at that stage you can complete your clean-up process, you can
set the task manager bit off in the schedule flag word when the
clean-up process is finished, to avoid an unnecessary invocation by the
CICS task manager.
The only valid bit combinations are those produced by combining one of
UERTPREP, UERTCOMM, UERTBACK, UERTDGCS, and UERTDGNK with
either UERTLAST or UERTRSYN, or both; or by combining UERTWAIT and
UERTLAST.
Your exit program should examine the flags set both in this byte and in
operation byte 2 (see parameter 10), to determine what action is expected of it.
Parameter 2
If not zero, the address of a 4-byte, packed-decimal field identifying the original
task. But note that, on many invocations of the exit program, parameters 2
through 9 do not contain values. See note 1 on page 260.
Parameter 3
Address of a 4-character field identifying the transaction that started the original
task. See note 1 on page 260.
Parameter 4
Address of a 4-character field identifying the terminal from which the original
task was initiated. See note 1 on page 260.
Parameter 5
Address of a 4-character field containing the identity of the terminal operator
(OPID) who initiated the original task. See note 1 on page 260.
the task-related user exit program
Chapter 2. Task-related user exit programs 259