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Unicenter CA-Scheduler Job Management for VSE User Guide

Unicenter CA-Scheduler Job Management for VSE User Guide

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3.9 Defining <strong>Job</strong>s<br />

3.9.3.3 When Will <strong>Job</strong>s Actually Run?<br />

when it ordinarily would be selected in autoscan. For example, suppose<br />

that only once you want to omit a job that normally runs on Friday.<br />

Specify SKIP = 1 and <strong>Unicenter</strong> <strong>CA</strong>-<strong>Scheduler</strong> will "<strong>for</strong>get" only that job<br />

this Friday (not its successors). Each autoscan time when <strong>Unicenter</strong><br />

<strong>CA</strong>-<strong>Scheduler</strong> skips over a job it normally would have selected, it<br />

decrements the value in the SKIP field by one until SKIP once again is<br />

zero. Then selection <strong>for</strong> this job resumes normally. This advanced<br />

technique is only used under exceptional conditions. Usually, SKIP = 0.<br />

As <strong>Unicenter</strong> <strong>CA</strong>-<strong>Scheduler</strong> selects the day's workload, it organizes the work,<br />

grouping each schedule's jobs together. This ordering reflects the sequence in<br />

which <strong>Unicenter</strong> <strong>CA</strong>-<strong>Scheduler</strong> evaluates jobs <strong>for</strong> submission. It also<br />

approximates the order in which jobs run.<br />

It does not line schedules up in the order they are selected. Instead, <strong>Unicenter</strong><br />

<strong>CA</strong>-<strong>Scheduler</strong> allows you to control that order using schedule options. Those<br />

options are described in the topic When Will A Schedule's <strong>Job</strong>s Actually Run?<br />

While <strong>Unicenter</strong> <strong>CA</strong>-<strong>Scheduler</strong> is organizing the workload, it also prioritizes<br />

the jobs selected from each schedule. <strong>Unicenter</strong> <strong>CA</strong>-<strong>Scheduler</strong> allows you to<br />

control the sequence of jobs within a schedule using the following job<br />

parameters:<br />

■<br />

■<br />

■<br />

■<br />

■<br />

■<br />

■<br />

JCR predecessors<br />

USE SIMTIME<br />

JRC start times<br />

EARLIEST START TIME<br />

JRC DEADLINE TIMEs<br />

COMPLETION DEADLINE TIME<br />

JOB PRIORITY<br />

Chapter 3. Maintaining the Database 3-59

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