Unicenter CA-Scheduler Job Management for VSE User Guide

7.2 Backlogged Work
7.2 Backlogged Work
There will be times when schedules or jobs will not complete the day on which
they were selected which means that they may be candidates for being
backlogged, but first, define what a day is.
In terms of your company, a day would be your normal daily business
computer cycle. For example, production work starts at 16:00 and is to be
completed by 08:00 the next morning. This is fairly typical which means you
run autoscan at, or shortly after, 08:00 (to select schedules and jobs for the next
16:00 to 08:00 time period). Thus, in terms of Unicenter CA-Scheduler, a day is
the 24-hour period that starts with the time that you run autoscan. This is
termed the production day or autoscan day.
Schedules and jobs that do not complete on the production day on which they
were selected can be carried over to the next production day. They are then
called backlogged schedules or jobs. When you define a schedule or job to the
database, specify whether that schedule or job is a candidate for backlog.
Normally it is.
What happens if the work for a production day is not complete is next
described.
Job Backlog
The normal situation allows schedules to be backlogged.
When autoscan is initiated and it is determined that a
schedule is still active (it has not finished running yet),
the schedule will be backlogged. Any job in the schedule
that has completed, been canceled, or purged will retain
its status. If a job has been defined with
BACKLOG=YES, it will be backlogged if it had not
started. That is, it will be allowed to run. If a job in the
backlogged schedule has been defined with
BACKLOG=NO and still has a status of WAITING, it
will be canceled with a status called NO BACKLOG
CNCL.
Once all jobs in the backlogged schedule have been
completed or canceled, the schedule will be marked as
complete. If the same schedule was also selected on the
current production day, then it and its associated jobs
will be placed on the Unicenter CA-Scheduler tracking
file and processed as if it had been selected normally.
If a daily schedule gets backlogged for greater than 24
hours (that is, it is backlogged by two autoscans), then
when it completes, the schedule to execute on the
completed day is loaded to the tracking file. For
example, if Monday's schedule gets backlogged and
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