NonStop NS-Series Operations Guide (H06.12+)

Note the effect on the system when you stop these applications:
• Stopping Pathway applications begins shutdown of all TCP objects (shutting down TERM
objects and then themselves) in parallel. New work is disallowed. The PATHMON process
logs the start and completion of SHUTDOWN2. It does not log status messages during
shutdown.
• Stopping DSM/SCM stops the CNFGINFO server process, the Pathway environment for
DSM/SCM, the alternate EMS collector $ZPHI, and TCP/IP processes for DSM/SCM, as this
example shows:
STOP CNFGINFO server process $ZPHC
STOP DSM/SCM Pathway system $YPHI
PATHCOM $YPHI;SHUTDOWN !,WAIT
$Z02H: TCP TCP-H, STOPPED
$Z02H: TCP TCP-T, STOPPED
STOP DSM/SCM Alternate EMS Collector $ZPHI
• Following the SPOOLER DRAIN command, the collectors allow current jobs to finish but
reject new opens with a file-system error 66 (device downed). When you drain the spooler,
each collector stops when it has no more open jobs. Each print process finishes printing any
active jobs and then stops. After all collectors and print processes have stopped, the supervisor
stops. The spooler enters the dormant state, ready to be warm started.
• Following the SCF CONTROL, DISK REFRESH command, all other disk I/O is suspended.
The amount of time a refresh operation takes to finish depends on the amount of disk cache
containing dirty pages in use at the time, and writing to disk can take several minutes.
Stop processes and applications in this order:
1. After you send a message alerting users of the shutdown, stop all user applications.
2. If your system is equipped with Pathway, stop Pathway applications. At the Pathway prompt:
= SHUTDOWN2, MODE ORDERLY
3. Stop Distributed Systems Management/Software Configuration Manager (DSM/SCM) if it
is running. At a TACL prompt:
a. Type this VOLUME command:
> VOLUME $DSMSCM.ZDSMSCM
b. Stop DSM/SCM:
> RUN STOPSCM
4. Stop communications lines, such as Expand lines.
5. Identify and stop any remaining processes that should be stopped individually:
a. Use the TACL PPD and STATUS commands to help you identify running processes.
b. Use the TACL STOP command to stop running processes.
6. Drain the spooler. The SPOOLCOM SPOOLER DRAIN command stops the spooler in an
orderly manner. It is the only recommended way to stop the spooler. At a TACL prompt:
> SPOOLCOM supervisor-name, SPOOLER, DRAIN
7. Stop the TMF subsystem. At the TACL prompt:
> TMFCOM STOP TMF
8. Refresh the disks to put them in an orderly state before shutdown. Use the SCF CONTROL
DISK, REFRESH command:
Stopping Application, Devices, and Processes 165