A Guide to JES3 to JES2 Migration

An IBM Redbooks publication

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Published on November 06, 2019

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ISBN-10: 0738458201
ISBN-13: 9780738458205
IBM Form #: SG24-8427-01


Authors: Lydia Parziale, Luiz Fadel, Lutz Kuehner and Ricardo Paranhos

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    Abstract

    This IBM® Redbooks® publication provides information to help clients that have JES3 and want to migrate to JES2. It provides a comprehensive list of the differences between the two job entry subsystems and provides information to help you determine the migration effort and actions.

    This book considers the features of JES2 as available on releases of IBM z/OS® V2R3 and V2R4. It should be used with JES3 to JES2 Migration Considerations, SG24-8083.

    This publication is divided into three parts:

    • Part 1, “Planning to migrate from JES3 to JES2” on page 1, gives you information to make the decision and plan your migration.

    • Part 2, “Use case study” on page 111, provides a Use Case Study that is based on an actual customer experience in a successful migration.
    • Part 3, “Appendixes” on page 193, provides an appendix with sample tools that can help the migration process and exploitation of some of the new JES2 functions.

    This book is aimed at operations personnel, system programmers, and application developers

    Table of Contents

    Part 1. Planning to migrate from JES3 to JES2

    Chapter 1. Why JES2?

    Chapter 2. Terminology differences

    Chapter 3. Convergence of JES2 and JES3

    Chapter 4. JES2 functions to help migration

    Chapter 5. JES procedure and initialization decks

    Part 2. Use case study

    Chapter 6. Customer experience case study

    Appendix A. Sample JES3 exit to analyze JECL usage

    Appendix B. Comparison of JES3 and JES2 commands

    Appendix C. Sample SMF84 Report program

    Appendix D. DJC conversion and JEC examples

    Appendix E. SPOOL partitioning exits sample code

    Appendix F. Alternative conversion programs

    Appendix G. Additional material

     

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