Halting System Activity

This section describes the steps necessary to perform an orderly shutdown of your system prior to a configuration update.




	NOTE: This section describes procedures associated with shutting down your system. Read through this section before you attempt a shutdown based on these instructions. Go over the areas that you want to customize for your system. Refer to System Startup, Configuration, and Shutdown Reference Manual (32650-90042) for additional information about halting system activity.

To halt system activity, follow these steps:

Ensure that you have complete backup tapes. If you do not have up-to-date backups, reschedule the update. Refer to System Backup and Recovery (32650-90039) for more information on backing up a system.
Log on to the console as MANAGER.SYS.
Include shutdown information in the welcome message. Remember to include information about the time of the shutdown and whom a user should contact with questions. At the system prompt, enter:
:WELCOME #Return
This erases the present welcome message. Enter it a second time:
:WELCOME
When the pound sign prompt (#) appears, enter the message line by line, ending each line with Return. Press Return at the prompt to terminate the welcome message facility.
Use the TELL command to alert users to the upcoming shutdown approximately 15 minutes beforehand. At the system prompt, enter:
:TELL @S;Shutdown in 15 minutes. Please log off.
Use the LIMIT and JOBFENCE commands to prevent any new users from logging on or any scheduled jobs from starting. At the system prompt, enter:
:LIMIT 0,0 :JOBFENCE 14
To verify that the printer is available and to shut down spool queues, follow these steps:
1. Verify that the printer is active. At the system prompt, enter:
  :SHOWDEV nn (nn is your printer's LDEV number.)
2. Use the SHUTQ command to shut down the spool queues. This prevents users from sending reports to the printer. At the system prompt, enter:
  :SHUTQ nn (nn=printer's LDEV number) or :SHUTQ devname (devname=device name of spooled device)
A configuration update to install an autoboot file requires a minimum number of sectors on LDEV 1. Ensure that you have this space by following these steps:
1. Build a dummy file on LDEV 1 that contains 1000 sectors. At the system prompt, enter:
  :BUILD AXLDEV1;DISC=1000,1,1;DEV=1;TEMP
  NOTE: If you do not have enough disk space to build this file, you must store files located on LDEV 1 to tape, purge those files from LDEV 1, then repeat this step.
2. Purge the dummy file. At the system prompt, enter:
  :PURGE AXLDEV1,TEMP
Warn users two minutes before shutting down the system. At the system prompt, enter:
:WARN @S;SYSTEM SHUTDOWN IN 2 MINUTES. LOG OFF.
Close any of the system's open communication lines. At the system prompt, enter both of the following to deactivate the NS3000/XL product:
:NSCONTROL STOP :NETCONTROL STOP
Refer to the manuals of any other communications products for instructions on deactivating them.

To shut down the system, enter:

   CTRL A

   =SHUTDOWN

The console responds by listing shutdown messages similar to these:

Shutdown of operating system begins. (Shut 1)

Shutdown of user processes begins. (Shut 2)

Shutdown of jobs & sessions begins. (Shut 3)

Spoolers notified of a shutdown. (Shut 16)

Shutdown of system processes begins. (Shut 4)

Shutdown of system managers begins. (Shut 5)

Shutdown of operating system complete. (Shut 6)

All system activity is now halted.

You must now perform a configuration update to complete installation of the autoboot file.

Halting System Activity

Technical documentation

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