GG66-3113 - VSE to MVS Differences and Migration Guide

In 1988 and 1989, Dan Ebaugh of the Washington Systems Center (WSC) and 24 other IBM experts developed a document to help VSE installations migrate to MVS/XA and MVS/ESA. This 250-page PumpkinBook, released in 1989 as GG66-3113 - VSE to MVS Differences and Migration Guide, included a lot of information about VSE to MVS conversions, including a one-page description of the MVS Migration System (MVS-MS), an IBM Program Offering eventually discontinued in 1997.

GG66-3113 - VSE to MVS Differences and Migration Guide was made up of 19 chapters:

1. The MVS Operating System 2. VSE to MVS Migration Introduction 3. DASD and Tape Migration Considerations 4. VSAM Differences 5. CICS Differences

6. DL/I and IMS/VS Differences 7. SQL/DS to DB2 Migration Considerations 8. Data Dictionary Differences 9. Telecommunications Differences 10. Assembler Migration Considerations

11. COBOL Migration Considerations 12. Fortran Migration Considerations 13. PL/I Migration Considerations 14. RPG Migration Considerations 15. POWER - JES2 Subsystem Differences

16. NJE Differences 17. SORT Differences 18. DITTO Differences 19. ICCF and TSO/E Differences

In this book, none of the 19 chapters covers the differences between the VSE JCL and MVS JCL. This is an important weakness, because the conversion of VSE JCL to MVS includes many difficulties and requires, typically, between 60% and 80% of the total effort needed to perform this type of project.

Historical Background

In 1997 and 1998, GG66-3113 - VSE to MVS Differences and Migration Guide was used as the base upon which SG24-2043 - VSE to OS/390 Migration Workbook was developed. In 1999, the VSE to MVS Differences and Migration Guide went out of print, but virtually all the information it contained was included in the VSE to OS/390 Migration Workbook, which is still available today.

Prior to GG66-3113 - VSE to MVS Differences and Migration Guide, IBM published several documents on the same subject:

• GC24-6000 DOS to OS Implementation Guide
• GC24-5082 DOS/VS to OS/VS Management Planning Guide
• GC24-5095 DOS/VS to OS/VS1 Implementation Guide
• DOS to MVS Migration Structured Support Plan (SSP)
  • GH19-6403 DOS to MVS Migration General Information Manual
  • GG24-1524 DOS to MVS Migration Structured Support Plan - General Information Manual
  • GG24-1525 DOS to MVS Migration - Sample Migration Network
  • GG24-1526 DOS to MVS Migration - Sample Events and Activities
  • GG24-1527 DOS to MVS Migration - Sample Project Manager's Guide
  • GG24-1528 DOS to MVS Migration - Sample Conversion Team User's Guide
  • GG24-1529 DOS to MVS Migration - Standards Design Guide
  • G320-0131 Structured Support Plan - DOS and MVS Differences Guide

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