Example Of End-Of-Operation Shut - Control Data Corporation CYBER 170 Series Operator's Manual

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EXAMPLE Of END-Of-OPERATION SHUTDOWN
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Because the method used to terminate system operations is
dependent upon requirements of your site, the actual
procedure for shutdown may differ among sites. The
following procedure is an example and suggests guidelines
for orderly termination of processing. Do not confuse this
procedure with the shutdown procedures performed in
preparation for a recovery deadstart (refer to Preparing for
Recovery Deadstart in section 2).
1. Use the DSD job. status (B) display to monitor
control point activity.
2. If the time-sharing subsystem is active at control
point 1, provide advance notice of shutdown time
to active time-sharing users by entering the DSD
command WARN. For example:
WARN,SYSTEM SHUTDOWN AT 1500,
PLEASE LOG-OFF.
If N AM is active at a control point, provide
advance notice of shutdown time to active users
by entering the n.CFO command. For example:
n.CFO.MS,ALL,SYSTEM SHUTDOWN AT
1500, PLEASE LOG-OFF.
n Control point number of NAM.
3. Prevent new time-sharing users from logging into
the system by entering the following DSD
command.
SERVICE, TX,NJO.
The NJ parameter, which specifies the number of
active lines allowed for time-sharing origin (TX)
jobS, is set to zero (NJO).
4.
If
the time-sharing . subsystem is active at control
point 1, examine the time-sharing status (T)
display to determine if there are still active
users. To send a message to an active user, enter
the DIAL command. For example:
DIAL,15,SYSTEM CLOSED,CALL X492 IF
MORE TIME NEEDED.
This message is sent to terminal 15 following
output data, if any.
When there are no longer active time-sharing
users indicated on the T display, drop the
time-sharing subsystem by typing:
1.IDLE.
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5. Drop NAM
if
active at a control point by typing:
n.CFO.DISABLE,NE
n Control point number of NAM.
6. Drop TAF if active at a control point by typing:
n.IDLE.
n Control point number of TAF.
7. If MSS is active at a control point and if jobs that
need files to be staged from MSS are to be
aborted, type:
DISABLE, FILE STAGING.
Drop MSS by typing:
n.IDLE.
n Coritrol point number of MSS.
MSS becomes idle after it has completed all stage
requests currently in process. Examine the output
drawer for any cartridges and save them for
subsequent recovery pro·cessing (refer to the NOS
System Maintenance Reference ManuaI).
8. ·Drop EXPORTL (Export/Import subsystem) if it is
currently assigned to a control point by typing:
n.IDLE.
n Control point number to which
EXPORTL is assigned.
If transmission to a remote batch terminal is
terminated by dropping EXPORTL, the file being
transmitted is rewound and placed back in the
output queue. All other files currently scheduled
for transmission to remote batch terminals are
returned to the output queue.
9. Drop BATCHIO by typing:
n.IDLE.
n Control point number of BATCHIO.
BATCHIO will drop after it completes processing
of all active devices. Files currently being
printed or punched, as well as cards currently
being read, will complete. No new files will be
printed or punched.
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