Jcl Manual
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Jcl Reference Manual Pdf
JCL - Overview When to use JCL 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. Example of a batch system can be processing the bank transactions through a VSAM (Virtual Storage Access Method) file and applying it to the corresponding accounts. Example of an online system can be a back office screen used by staffs in a bank to open an account. In batch mode, programs are submitted to the operating system as a job through a JCL. Batch and Online processing differ in the aspect of input, output and program execution request.
Alternative 2 - Add the job JCL to the existing procedure Alternative 3 - Add the member and invoke a procedure in another DD concatenation Determining system services for a started task. JCL System Messages. Allocate a data set to contain your JCL 10. Job Control Language (JCL) is a name for scripting languages used on IBM mainframe operating systems to instruct the system on how to run a batch job or start a subsystem. More specifically, the purpose of JCL is to say which programs to run. Manual file allocation.