z/OS MVS JCL Reference
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/*PRIORITY statement

z/OS MVS JCL Reference

Purpose: Use the /*PRIORITY statement to assign a selection priority for your job. Within a job class, a job with a higher priority is selected for execution sooner.

Note: The /*PRIORITY statement is ignored for a started task.

In a JES2 system, there are a number of factors that determine the order in which a particular job is selected for execution. Therefore, you cannot be assured that job priority (based on the PRTY you assign a job), job class, or the order of job submission will guarantee that the jobs will execute in a particular order. If you need to submit jobs in a specific order, contact your JES2 system programmer for advice based on how your system honors such requests. (z/OS JES2 Initialization and Tuning Guide provides JES2 system programmer procedures concerning job queuing and how to control job execution sequence.)

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