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What is the use of JCL procedures?

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What is the use of JCL procedures?

The JCL Procedures are set of statements inside a JCL grouped together to perform a particular function. Usually, the fixed part of the JCL is coded in a procedure. The varying part of the Job is coded within the JCL. You can use a procedure to achieve parallel execution of a program using multiple input files.

How do you write JCL in mainframe?

Procedure

  1. Allocate a data set to contain your JCL. Use ISPF (or equivalent function) to allocate a data set named userid .
  2. Edit the JCL data set and add the necessary JCL.
  3. Submit the JCL to the system as a job.
  4. View and understand the output from the job.
  5. Make changes to your JCL.
  6. View and understand your final output.
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What are three major types of JCL statements?

All jobs require the three main types of JCL statements: JOB, EXEC, and DD.

How best you describe JCL?

JCL (job control language) is a language for describing jobs (units of work) to the MVS, OS/390, and VSE operating systems, which run on IBM’s S/390 mainframe computers. These operating systems allocate their time and space resources among the total number of jobs that have been started in the computer.

How many steps can a JCL have?

JCL contains maximum 255 steps.

How do you call a proc in JCL?

Syntax for Executing procedure –> EXEC [PROC=]procedure-name INSTREAM PROCEDURE A JCL Procedure is a pre-written segment of code, that you can include in your JOB. You code instream data set within the job and use it in that job as many times as you want.

What is disp JCL?

DISP. The DISP parameter is used to describe the status of the dataset, disposition at the end of the job step on normal and abnormal completion. DISP is not required in a DD statement only when the dataset gets created and deleted in the same job step (like the temporary datasets).

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What is a JCL class?

JCL CLASS Parameter is a Keyword Parameter and CLASS Parameter defines an input CLASS in of a schedule JOB. It is used to tell the operating system about the nature of the job which we are submitting.

What does JCL stand for?

JCL

Acronym Definition
JCL Job Control Language
JCL Java Class Library (computing)
JCL Java Constraint Library
JCL Java Class Library

What is JCL statement?

JCL (Job Control Language) statements control the flow of a complete job. They determine which programs run, the sequence in which each program runs, and which files are accessed, copied, or created.