Unicenter CA-Scheduler Job Management for VSE User Guide

3.1 Defining Schedules
If USE SIMTIME = NO, Unicenter CA-Scheduler checks to see what start times
you have specified on the schedule record. You specify the earliest possible
time a schedule can start using a 24-hour clock. For example, an early time of
1400 allows a schedule to start no earlier than 2 p.m. in the afternoon. But
what if that schedule should not start until some day in the future? Unicenter
CA-Scheduler also allows you to specify start times with a prefix showing how
many days to delay the start of those jobs. For example, a start time of 031400
delays the start of that schedule until 2 p.m., three days after that schedule
was originally selected.
If USE SIMTIME=NO, Unicenter CA-Scheduler checks to see if a schedule's
reason code record contains start times. Since start time is an important factor
in sequencing your workload, Unicenter CA-Scheduler gives you flexibility.
For example, a schedule may need to start at different times on different days.
This is not a problem because Unicenter CA-Scheduler allows you to define
different reasons for selecting a schedule on its criteria record (SCR). Each
reason can cause that schedule to be selected on a different day. Once you
have defined reasons on the SCR, you can specify a different start time for
each reason. A schedule's alternate start times are stored on its reason code
record (SRC).
The last place Unicenter CA-Scheduler looks for a start time is EARLIEST
START TIME. If you do not specify a start time anywhere, Unicenter
CA-Scheduler only delays starting this schedule until its predecessor
conditions are satisfied.
When Unicenter CA-Scheduler organizes the work to be processed each day,
first it considers each schedule's predecessors. Then it checks start times. If
several schedules have the same predecessors and start times, Unicenter
CA-Scheduler puts those with earlier deadlines ahead of the others. Work that
has to be finished sooner goes first. You define deadlines in fields called
DEADLINE TIME on the reason code record or COMPLETION DEADLINE
TIME on the schedule base record.
Finally, Unicenter CA-Scheduler checks one last field when it's organizing the
workload. Schedules with the same predecessors, start times, and deadlines are
sorted by SCHED PRIORITY: schedules with the highest priority go first.
Priorities range from a high of 01 to a low of 99.
If, after checking all these fields, Unicenter CA-Scheduler finds a group of
schedules with equivalent values in all these fields, it lines up those schedules
in alphabetical order. The chart following summarizes how Unicenter
CA-Scheduler organizes its workload.
Sequence By Using On The
Predecessors Criteria language Criteria record
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