Unicenter CA-Scheduler Job Management for VSE User Guide

3.2 Defining Optional Schedule Records
A review of what the criteria statement SCD DBUPDATE OR DAILY does
follows. The OR without parentheses defines two reasons why this schedule
can be selected. Each reason will be examined independently:
■
■
This schedule is selected whenever the schedule named DBUPDATE is
selected, and on those days, the completion of DBUPDATE is a
predecessor to the backup schedule. All DBUPDATE jobs in the workload
must finish before any backup jobs can begin.
OR DAILY causes Unicenter CA-Scheduler to select the backup schedule
whenever DBUPDATE is not selected. On those days, this schedule has no
predecessors.
That means Unicenter CA-Scheduler selects the backup schedule every day.
And on days when DBUPDATE is selected, DBUPDATE is a predecessor to
BACKUP.
Does the order in that criteria statement matter? Would the statement
DAILY OR SCD DBUPDATE
yield the same result? Both statements cause the backup schedule to run on the
same days with the same predecessor. But there is a subtle difference
involving the reasons schedules are selected. Suppose DBUPDATE runs on
Mondays, Wednesdays and Fridays. Making DAILY the first reason in the
criteria statement means this schedule is always selected for that reason, but
putting DAILY last
(SCD DBUPDATE OR DAILY)
means that schedule sometimes is selected for the second reason.
Unicenter CA-Scheduler has an optional record that allows you to control
schedules differently depending on the reason why it was selected. Therefore,
make DAILY the second reason to implement different start times or
maximum durations for each reason. The next topic explains how to do that
using the schedule's optional reason code record.
For complete information on coding criteria statements, see the chapter
"Criteria Language."
To save this criteria record and leave this panel, type FILE in the command
input area. (Otherwise, you could leave the panel without saving this criteria
record by typing QUIT.)
All of the editor commands are inthe appendix "Editor Commands" in the
Unicenter CA-Scheduler Reference Guide, Part 2. The FILE command causes
Unicenter CA-Scheduler to immediately create that schedule's criteria record.
After you press ENTER, Unicenter CA-Scheduler displays the following panel,
which confirms that the record has been created:
Chapter 3. Maintaining the Database 3-23