Abstract for JES2 Introduction

This information supports z/OS® (5650-ZOS).

Purpose of this information:

This information provides an introduction to the job entry subsystem 2 (JES2). It is meant to provide an overview of JES2; it is not meant to be an instructional manual. This information is specifically designed for installations running z/OS. This information presents:

JES2 as a unified set of related functions whose purpose is to accomplish certain data processing goals for MVS
JES2 and its relationship to MVS, Time Sharing Option Extensions (TSO/E), and components of the MVS operating system
An overview of JES2 functions, device control, network job entry (NJE), remote job entry (RJE), initialization, operations, customization techniques, and diagnostic tools.

Who should read this information:

This information is intended for the MVS system programmer, operator, data processing manager, or student who is unfamiliar with JES2 and its functional relationship to the base control program of MVS.

This information is specifically designed for installations that are evaluating or running z/OS JES2. However, much of the function described is available in previous versions of the JES2 component in MVS/System Product Version 1, Version 2, Version 3, Version 4, and Version 5. Therefore, most of the material presented here applies to JES2 at those version/release levels because of the overview-level of detail. The information, however, makes no distinction between functions and in what version/release they were added to JES2.

How to use this information:

To obtain the most from this information, you should read it sequentially. The information presented in each topic is built upon previous information. If you are unfamiliar with JES2 concepts and terminology, you will find that reading the information in this manner is most helpful.