A Guide to JES3 to JES2 Migration

A Guide to JES3 to JES2 Migration

by Luiz Fadel Lydia Parziale Nobuhiko Furuya, Lutz Kuehner, Ricardo Paranhos
Released August 2018
Publisher(s): IBM Redbooks
ISBN: 9780738457079

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Book description

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® V2R2 and V2R3. 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 85, provides a Use Case Study based on an actual customer experience in a successful migration.

  • Part 3, “Appendixes” on page 153, 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

    1. Front cover
    2. Notices
      1. Trademarks
    3. Preface
      1. Authors
      2. Now you can become a published author, too!
        1. Comments welcome
        2. Stay connected to IBM Redbooks
    4. Part 1 Planning to migrate from JES3 to JES2
      1. Positioning for migration
    5. Chapter 1. Why JES?
      1. 1.1 Introduction
      2. 1.2 Job Entry Subsystem
      3. 1.3 JES2 availability
        1. 1.3.1 MAS members
        2. 1.3.2 JES2 resiliency
      4. 1.4 JES2 job management
        1. 1.4.1 Email Delivery Service
      5. 1.5 JES2 security
        1. 1.5.1 Data encryption
        2. 1.5.2 Passphrase support
      6. 1.6 JES2 and JES3 compatibility
    6. Chapter 2. Terminology differences
      1. 2.1 JES3 terminology
      2. 2.2 Different use of terms
        1. 2.2.1 Non-specific JES2 and JES3 references
        2. 2.2.2 Collections of JESes
        3. 2.2.3 JES startup processing
        4. 2.2.4 JES parameter statements
        5. 2.2.5 SYSOUT processors
        6. 2.2.6 Remote workstations
        7. 2.2.7 JES threads
        8. 2.2.8 Multiple JES2 images
        9. 2.2.9 JES initialization statements
    7. Chapter 3. Convergence of JES2 and JES3
      1. 3.1 JES2 to JES3 compatibility
        1. 3.1.1 JES2 health monitor
        2. 3.1.2 JES initialization deck checker
        3. 3.1.3 Job Execution Control
        4. 3.1.4 Deadline scheduling
        5. 3.1.5 Priority aging
        6. 3.1.6 Support to eight-character job class name
      2. 3.2 JES2-only functions
        1. 3.2.1 Job correlator
        2. 3.2.2 SPOOL migration
      3. 3.3 JES3-only functions
        1. 3.3.1 Data Set Name disposition conflict resolution
        2. 3.3.2 Spool partitioning
        3. 3.3.3 Job class group
        4. 3.3.4 Printer naming conventions usage
        5. 3.3.5 Main Device Scheduling
        6. 3.3.6 JES3 device control and device fencing
    8. Chapter 4. New JES2 functions to help migration
      1. 4.1 JES2 options
      2. 4.2 Job Execution Control concept
        1. 4.2.1 Job group concept
        2. 4.2.2 Deadline scheduling
      3. 4.3 JES3 JECL processing support in JES2 V2R3
        1. 4.3.1 Activating JES3 JECL support
        2. 4.3.2 //*NET support detail
      4. 4.4 Privileged support
      5. 4.5 JES2 initialization data set checker
      6. 4.6 SMF 84 record support
      7. 4.7 Eight-character JOB CLASS and JOB CLASS GROUP support
        1. 4.7.1 JOB CLASS GROUP support
      8. 4.8 Interpreter after converter support
      9. 4.9 New functions similar to deadline scheduling
        1. 4.9.1 HOLDUNTL on SCHEDULE JCL statement
        2. 4.9.2 STARTBY on SCHEDULE JCL statement
        3. 4.9.3 WITH= on SCHEDULE JCL statement
      10. 4.10 SPOOL management
    9. Chapter 5. JES procs and initialization decks
      1. 5.1 Introduction
      2. 5.2 Initialization statements
        1. 5.2.1 Verifying the JES initialization deck
      3. 5.3 JES procedures
        1. 5.3.1 JES2 procedure
        2. 5.3.2 JES3 procedure
        3. 5.3.3 Other procedures
      4. 5.4 Automation considerations
    10. Part 2 Use Case Study
    11. Chapter 6. Customer experience case study
      1. 6.1 Migration steps overview
      2. 6.2 Planning and assumptions
      3. 6.3 JES2 system design
      4. 6.4 Educating stakeholders
      5. 6.5 Removing and replacing JES3 exits
      6. 6.6 Transforming JES3 special functions
      7. 6.7 Transforming JCL and JECL
        1. 6.7.1 Production JCL
        2. 6.7.2 User JCL
      8. 6.8 Migrating system automation
        1. 6.8.1 New JES2 messages
        2. 6.8.2 CKPT reconfiguration
        3. 6.8.3 Replacement for JES3 unique functions
      9. 6.9 Migrating security
        1. 6.9.1 JES3 prefixed profiles
        2. 6.9.2 New JES2 command profiles
        3. 6.9.3 SDSF and EJES considerations
      10. 6.10 Migrating your printer
        1. 6.10.1 FSS address spaces
      11. 6.11 Performance experience
        1. 6.11.1 CPU use comparison
        2. 6.11.2 Dynamic checkpoint
      12. 6.12 Hints and tips
        1. 6.12.1 JCL errors
        2. 6.12.2 S722 abends in JCL
        3. 6.12.3 Lost printer names after transfer
        4. 6.12.4 Monitoring default job class A
        5. 6.12.5 Monitor JES2 resources
        6. 6.12.6 Modifying JES3 OUTSERV
        7. 6.12.7 NJE performance
        8. 6.12.8 REXX SPIN
        9. 6.12.9 NJE parms for time differences
        10. 6.12.10 Print delays
        11. 6.12.11 APPC abends
      13. 6.13 Ready to migrate
        1. 6.13.1 Preparing your sysplex
        2. 6.13.2 Shutting down JES3 sysplex
        3. 6.13.3 Restarting sysplex with JES2 MAS until TSO
        4. 6.13.4 Preparing NJE connection to JES2 MAS
        5. 6.13.5 Starting SPOOL migration
        6. 6.13.6 JES2 test cases
        7. 6.13.7 Restarting subsystem
        8. 6.13.8 Releasing your BATCH
        9. 6.13.9 Quitting your JES2 license
    12. Part 3 Appendixes
    13. Appendix A. Sample JES3 exit to analyze JECL usage
      1. Sample JES3 user exit 33
    14. Appendix B. Comparison of JES3 and JES2 commands
      1. List of commonly used JES3 and JES2 commands
    15. Appendix C. Sample SMF84 Report program
      1. Source code of SMF84RPT program
    16. Appendix D. DJC conversion and JEC examples
      1. DJC conversion test results
      2. Using JES2 JEC
    17. Appendix E. SPOOL partitioning exits sample code
      1. E.1 Sample exits overview
      2. E.2 Exit 11 program source code
      3. E.3 Exit 12 program source code
      4. E.4 Other code used by exits
    18. Appendix F. Alternative conversion programs
      1. z/OSEM
      2. ThruPut Manager Automation Edition
    19. Appendix G. Additional material
      1. Locating the web material
      2. Using the web material
    20. Related publication
      1. IBM Redbooks
      2. Help from IBM
    21. Back cover

    Product information

    • Title: A Guide to JES3 to JES2 Migration
    • Author(s): Luiz Fadel Lydia Parziale Nobuhiko Furuya, Lutz Kuehner, Ricardo Paranhos
    • Release date: August 2018
    • Publisher(s): IBM Redbooks
    • ISBN: 9780738457079