Job Control Language (JCL) is the programming language used with IBM's System 370/390 mainframe series of computers. Its function is to identify and describe information needed by the operating system in order to execute a desired job. This book contains concise coverage of recent enhancements to JCL with MVS/ESA Release 4.0 and how to use them. Allows experienced programmers to easily locate and learn about these new capabilities without having to wade through an introductory text.
This is the book you need to understand OS/390 JCL today, including advanced material your data center and it's manager will not even know. Drop the DCB parameter, specify space parameters with record counts using AVGREC, learn the new class structures of SMS. Learn why being too clever will only hurt those less clever and how to protect them in the way you write your JCL. Cover programs and see exacting programs in COBOL, C, and Assembler all on an OS/390. The most read book I have.
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