Job control (computing): Difference between revisions

Revision as of 13:44, 2 August 2025

Revision as of 13:53, 2 August 2025

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=={{anchor}}Batch processing==

Job control, a.k.a. [[batch processing]] mostly proceeds without human intervention.<ref>{{cite web

{{main article|Batch processing}}

While batch processing can run around the clock, with or without computer operators,<ref>{{cite web

|url=http://publib.boulder.ibm.com/infocenter/zos/basics/index.jsp?topic=/com.ibm.zos.zmainframe/zconc_batchproc.htm

|title=Mainframe working after hours: Batch processing}}</ref> sinceJob the computercontrol is muchconfigured fasterby than[[programmer]]s awho person,decide mostdetails decision-making occurs before the job even begins to run, and requires planning by the "programmer."including:

* When to run a job

* Which files and/or devices to use for input/output

=== Batch-oriented features ===

* Whether a file is to be retained or deleted

Although a computer operator may be present, batch processing is intended to mostly operate without human intervention. Therefore, many details must be included in the submitted instructions:

* The maximum amount of storage that can be used

* which programs to run;

* underUnder which conditions to skip a step.

* which files and/or devices to use for input/output;<ref>and many more details, such as whether the file is to be retained or deleted, the maximum of disk space to which it can grow, the name of a tape to be pre-mounted</ref>

* under which conditions to skip a step.

==Job control languages==