1. Introduction

Need of JCL

1. Introduction

JCL is a language in which the users of a computer systems describes to that system the requirements of their jobs.

• Provides a primary interface between user and the JES.
• Used to perform batch mode processing under MVS.

Within a job, JCL provides the specification necessary for MVS to process the job.

Specifications of a job are :

• User identity
• Data file identity
• Resource requirement
• Error handling

Need of JCL

• Request execution of program under MVS environment
• Sets the requirement for a job

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