Jobs

Defining Jobs

• Jobs are chunks of Work done on the 400.
• Jobs are basic units of work on the 400.

Job Names

• Each job has a unique name
• A job name has 3 parts
  • Job Number
  • User Name
  • Job Name

We need to know the individual naming ingredients when using Green Screen Commands to access info about particular Jobs.

Types of Jobs

• Each job requires some system resources from a pool that is made available.
  • Consider reports that a job creates.
  • There is baggage associated with keeping track of those reports, so until reports have been deleted from the system, there are resources consumed to manage the output from the jobs.
• DSPJOBTBL to check on those resources and see if we need more added to lower risk of Degradation.

System Jobs

• System jobs begin with the letter Q.

Spooling Jobs

• System provided print programs (writers).
  • Start = Start Writer Command
  • End = End Writer Command

User Jobs

Interactive

• Interactive jobs usually start when a user signs onto work station display of Green Screen, and end when the user signs off the work station.
  • Start = Sign on
  • End = Sign off
• Each time user signs on, that is a new job
  • Output from interactive jobs can end up in OUTQ

.

Batch

• Batch jobs are normally run by submitting requests for processing of data by programs that do not need to interact with the user.
• These requests go into a JOBQ to run as system resources are available.
  • SBMJOB submits job to JOBQ
  • Output from barch jobs can end up in OUTQ
• Start = Placed on JOBQ
• End = EOJ End of Job
• As soon as job is on JOBQ it has its own unique job identification.

Communication

• Communication jobs are started by a request, over a telephone line, by another system.
  • Start = Request from Remote System
  • End = Same as batch or interactive

Autostart

• Typically Autostart jobs are launched with the start of some subsystem to handle housekeeping chores associated with the function of that subsystem.
  • Start = Start subsystem
  • End = EOJ End of Job