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aids. The first five flags cause DFHZNAC to write the desired information to the
CSNE log if the appropriate bit is set. Setting the sixth flag (TWAODNTA) on
causes CICS to take a system dump when there is no task attached to the
terminal at the time of error detection, if the flag TWAOAT in TWAOPT2 is also
set on.
The flags are:
TWAOAF (X'80')
Print action flags
TWAORPL (X'40')
Print VTAM RPL
TWAOTCTE (X'20')
Print TCTTE
TWAOTIOA (X'10')
Print TIOA
TWAOBIND (X'08')
Print BIND area
TWAODNTA (X'04')
System dump if no task attached.
TWAOPT2
User option byte 2. TWAOPT2 contains flags which are task-related.
The NEP can abend the task by setting TWAOAT, or cancel it by setting
TWAOCT. The difference is that abend task does not take effect until the task
requests or completes a terminal control operation: cancel task takes effect as
soon as system and data integrity can be maintained. Setting TWAOAT to
abend the task is normally sufficient, except where the task performs lengthy
processing (such as a database browse) between terminal requests. If both
TWAOAT and TWAOCT are set, TWAOCT (cancel task) takes priority.
If the task is to be abnormally terminated, sends and receives are purged. If
TWAOGMM is set, the next transid is cleared and any communication area
associated with the terminal is released—except in the case of permanent
transids (specified on the TERMINAL definition as TRANSACTION(name)),
when the communication area is not released. If the TYPETERM of the terminal
indicates that the “good morning” message is supported (LOGONMSG(YES)), if
TWAONINT is off, and if the terminal is not in a BMS paging session, then the
“good morning” message transaction is initiated (the transaction specified by the
system initialization parameter GMTRAN).
The flags are:
TWAOAS (X'80')
Abandon any SEND for this terminal
TWAOAR (X'40')
Abandon any RECEIVE for this terminal
TWAOAT (X'20')
Abend any task attached to TCTTE
TWAOCT (X'10')
Cancel any task attached to TCTTE
when an abnormal condition occurs
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CICS TS for OS/390: CICS Customization Guide