Unicenter CA-Scheduler Job Management for VSE User Guide

6.2 Pitfalls
6.2 Pitfalls
This topic discusses some of the pitfalls you may encounter.
6.2.1 Using Operator Commands on the Status Display Panel
You are able to issue operator commands from a status display by just keying
in the command (first four characters) to the left of the schedule or job. You
can even issue more than one command at a time.
Pitfall:
When keying in a command to the left of a schedule or job in the
Online Status Display, be sure you are on the correct line. It is easy
to cancel the wrong job.
While on the subject of operator commands in status displays, here is a
clarification, not a pitfall. Remember, when using the commands in this
manner, that they are processed sequentially and stop being processed upon
encountering an error. For example, there is no reason to cancel a schedule and
then the jobs in that schedule.
6.2.2 Cancelling and Purging a Job
Suppose you have a schedule that consists of four jobs: JOB1 through JOB4.
JOB2 requires JOB1; JOB3 requires JOB2; and so on. If you CANCEL JOB3,
whether you also PURGE it, JOB4 will always wait for JOB3. You can
manually override this with a POST or FORCE command.
Suppose that JOB3A has JOB3 as a predecessor. If JOB3 is canceled and not
purged, the predecessor JOB3 is ignored when you issue a RUN JOB3A
command because JOB3 has been canceled but is still on the tracking file. If
you purge JOB3 before issuing the RUN JOB3A command, JOB3A waits for
JOB3 to complete. You have to RUN JOB3 to put JOB3 back on the tracking
file.
Do not use the PURGE command unless you plan to put the job back on the
tracking file by issuing a RUN command.
Pitfall:
Predecessors for jobs added to this day's production using the RUN
command are ignored if they have been canceled by the CANCEL
command but not deleted from the tracking file by the PURGE
command.
6.2.3 Changing Criteria on Selected Jobs
When a schedule or job has been selected, Unicenter CA-Scheduler reviews its
predecessor criteria as it exists on the database. What this means is that if you
have a schedule of four jobs: JOB1, JOB2, JOB3, and JOB5, where JOB2 requires
JOB1, JOB3 requires JOB2, and JOB5 requires JOB3. The schedule has been
selected and is on the tracking file. You then add JOB4 and change the
6-20 Unicenter CA-Scheduler User Guide