You can set a limit on the number of jobs the computer processes at the
same time. Most of the time, you will lower the limit to 0 or leave
it alone. Lowering the limit does not affect jobs that the computer
is processing already. It affects only those that are streamed after
you lower the limit.
To determine the jobfence |
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The jobfence is a barrier that keeps some jobs from being processed.
It may be a value between 0 and 14. To be eligible for computer
processing, a job's input priority must exceed the jobfence.
A jobfence of 14 prevents all jobs from processing.
To determine the jobfence, enter:
If there are no jobs, you'll see the message NO SUCH JOBS.
Otherwise, the system issues a description for each one, something like
the following display:
JOBNUM STATE IPRI JIN JLIST INTRODUCED JOB
NAME
#Jnnn WAIT D 8 10S LP MON 3:29P MYJOB,OPERATOR.SYS
JOBFENCE= 14; JLIMIT= 10; SLIMIT= 60
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In this example, the jobfence is set to its maximum value, 14, which
prevents all jobs from executing. The job listed (MYJOB,OPERATOR.SYS)
has an input priority of 8, which means that it will continue to wait until
the jobfence is lowered to 7 or less.
To determine the job limit |
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To determine the job limit, enter:
Or, you can determine the job limit by typing SHOWJOB (to see a list
of all jobs and sessions) or SHOWJOB JOB=@J (to see a list of jobs
only).
If you enter SHOWJOB JOB=@J, the system displays information
that resembles the following:
JOBNUM STATE IPRI JIN JLIST INTRODUCED JOB NAME
#J10 EXEC 10S LP MON 3:29P MAILMAN.HPOFFICE
#J46 WAIT D 1 10S LP MON 4:18P JOB1,USER.ACCOUNT
#J55 SUSP 10S LP MON 9:08A ARJOB,MGR.ACTRECV
3 JOBS:
0 INTRO
1 WAIT; INCL 1 DEFERRED
1 EXEC; INCL 0 SESSIONS
1 SUSP
JOBFENCE= 7; JLIMIT= 10; SLIMIT= 60
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The numbers under JOBNUM are the job numbers, and STATE describes
what is happening to the job.
JLIMIT=10 is your job limit. The computer lists jobs that currently are
processing as EXEC, or executing. Suspended jobs (jobs that the
computer was processing, but that have temporarily been halted) are
listed as SUSP. Jobs that the computer has not yet processed are
listed as WAIT, or waiting.
Jobs scheduled to begin later are listed directly below the others in a separate section:
CURRENT: 1/30/94 15:30
JOBNUM STATE IPRI JIN JLIST SCHEDULED-INTRO JOB NAME
#J13 SCHED 8 10S LP 1/30/90 20:00 MYJOB,OPERATOR.SYS
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To lower your job limit |
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To lower the job limit, enter:
You use the same command to limit both jobs and sessions. The first number
always specifies the job limit, and the second number, the session limit.
If you want to change the session limit only, you must insert a comma
before the number as a placeholder.
So, for example, to lower both the job and session limit, enter:
Or, to lower just the session limit, enter:
To check the new limit, enter:
To reset the job limit |
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To reset the job limit, enter:
Replace n with the job limit number.
To change a job's priority |
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Use the ALTJOB command to raise or lower a job's priority.
Raising the priority tells the computer that the job is urgent and
should be processed ahead of the others. Lowering the priority puts the
job on hold until you change its priority or until you change the jobfence.
To change a job's priority to 0, enter the ALTJOB command and
the job's number (in place of nnn) as shown in this example:
To check on the job, enter:
It will be listed as "D 0", or "deferred, with a priority of 0."
You can make the job eligible for processing again by raising its priority
above the jobfence or by lowering the jobfence.
To raise the job's priority
To raise a job's priority to 14, enter the ALTJOB command and
the job's number (in place of nnn) as shown in this example:
The value 14 is the highest priority you can give a job.
To suspend a job |
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You can temporarily stop any job that is listed as
"EXEC" (executing). The computer still keeps track of it,
listing it as "SUSP" (suspended) until you restart or abort the job.
To suspend a job, enter:
To suspend a processing job
To suspend a job that your computer is processing, enter the BREAKJOB
command and the job's number (in place of nnn) as shown in this example:
To list any suspended jobs, enter:
If there are no suspended jobs, the computer sends you a NO SUCH JOB(S)
message. If any jobs are suspended, the computer lists them in this form:
JOBNUM STATE IPRI JIN JLIST INTRODUCED JOB NAME
#J11 SUSP 10S SERIALP MON 3:29P JOB2.HPOFFICE
JOBFENCE= 7; JLIMIT= 10; SLIMIT= 60
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To restart a suspended job |
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To restart a suspended job, enter the RESUMEJOB command and the
job's number (in place of nnn) as shown in this example:
