System Startup, Configuration, and Shutdown Reference Manual (32650-90892)

62 Chapter3
System Startup Functions
Starting the System
NOTE bootup contains the CONFIG file that was used by the previous START
NORECOVERY command. RECOVERY starts the system, but sets the fence at 14
which prevents any jobs or sessions from automatically starting.
These default options instruct the system to boot from disk, to use the configuration
information last used to boot the system, attempts to log on as OPERATOR.SYS (if the
OPERATOR user has been created), to restart all jobs and allow all users access to the
system, to bring up all volumes present on the system, and to execute commands found in
the SYSSTART file, SYSSTART.PUB.SYS.
Enter an alternate option through a keyword parameter, or several alternate options in
groups of keyword parameters. The following command line shows an example of using
multiple alternate options:
ISL> START GROUP=CONFG950 LOGON=JOHN.SMITH NORECOVERY&:
SINGLE-USER SINGLE-DISC
Executing Commands During System Startup
The file SYSSTART.PUB.SYS executes automatically at system startup if the SYSSTART
parameter is specified in the START command. This file can be used to set up the normal
user environment automatically when the system starts up. The contents of this file
should include command parameters appropriate for your environment, such as the
standard limits for jobs and sessions, spooler start commands,stream device identification,
outfence priorities, event logging, and so on. These commands are then performed
automatically for you whenever the system is restarted.
A SYSSTART file can contain selected MPE commands (and their parameters) that the
system manager is allowed to execute except networking commands. (Networking
commands should be executed from a job that is streamed from SYSSTART, or from a logon
UDC for OPERATOR.SYS.) You can use the following commands in a SYSSTART file:
ACCEPT HEADOFF REFUSE
ALLOCATE HEADON STARTSESS
ALLOW JOBFENCE STARTSPOOL
ALTLOG JOBPRI STOPSPOOL
COMMENT JOBSECURITY STREAM
CONSOLE LDISMOUNT STREAMS
DEALLOCATE LIMIT SUSPENDSPOOL
DISALLOW LMOUNT TELL
DISCRPS LOG TELLOP
DOWN MRJECONTROL TUNE
DOWNLOAD OUTFENCE UP
VMOUNT