Job Control Language (JCL) is the command language of Multiple Virtual Storage (MVS), which is the commonly used Operating System in the IBM Mainframe computers. JCL identifies the program to be executed, the inputs that are required and location of the input/output and informs the Operating System
JCL is used in a mainframe environment to act as a communication between a program (Example: COBOL, Assembler or PL/I) and the operating system. In a mainframe environment, programs can be executed in batch and online mode.
About the Tutorial Mainframe computers. JCL identifies the program to be executed, the inputs that are required and the location of the input/output, and informs the Operating System through Jo ch and online modes. JCL is used for submitting a program for exe
JCL is used in a mainframe environment to act as a communication between a program (Example: COBOL, Assembler or PL/I) and the operating system. In a mainframe environment, programs can be executed in batch and online mode.
This gives the identity of the job to the Operating System (OS), in the spool and in the scheduler. The parameters in the JOB statement help the Operating Systems in allocating the right scheduler, required CPU time and issuing notifications to the user. Syntax Following is the basic syntax of a JCL JOB statement:
It can be invoked by a JCL or from within a program coded in COBOL, PL/1 or Assembler language. It also supports User Exit programs to be called from the SYNCSORT program.
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.
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The day-to-day application requirements in a corporate world that can be achieved using Utility Programs are illustrated below: 1. A file has 100 records. The first 10 records need to be written to output file.
