HP 3000 Manuals

System Startup, Configuration, and Shutdown Reference Manual

Limiting System Use 

Use the LIMIT and JOBFENCE commands to prevent any new users from logging
on or any scheduled jobs from starting.  Enter:

     :LIMIT 0,0 
     :JOBFENCE 14 

The command LIMIT 0,0 limits the number of concurrently running jobs and
sessions.  The two parameters, in this case, 0,0, define the allowed
number of jobs and sessions, respectively.

The command JOBFENCE 14 defines the minimum input priority that a job or
session must have to execute.  The parameter 14 raises the jobfence to
the highest level.

MPE/iX 5.0 Documentation