IBM OS/390 User Manual

This chapter discusses the following topics:

1.2, Traditional Reasons for Migrating

1.3, Functional Reasons for Migrating to OS/390

Executives: Read the following:

•

Part 1, “Planning the Migration - An Introduction” on page 1

•

Part 8, “Migration Experience” on page 527

System Programmers: Read the following:

•

Part 1, “Planning the Migration - An Introduction” on page 1

•

Part 2, “Converting the VSE Operating System to the OS/390 Operating
System” on page 67

•

Part 4, “Converting VSE Utilities to OS/390 Utilities” on page 373

•

Part 5, “Setting Up the Migration Environment” on page 399

•

Part 6, “Running Your OS/390 System” on page 435

Operators: Read the following:

•

Part 6, “Running Your OS/390 System” on page 435

Application Programmers: Read the following:

•

Part 3, “Converting VSE Languages to OS/390 Languages” on page 247

•

Part 7, “Converting your Applications” on page 479

This document is divided into nine parts:

•

Part 1, Planning the Migration - An Introduction

The scope of effort required to migrate from VSE to OS/390 will vary from
one organization to another. Many factors must be considered when making
the decision of when and how to migrate. This part discusses the reasons
for migrating, factors to consider when sizing the effort, and developing a
migration plan.

•

Part 2, Converting the VSE Operating System to the OS/390 Operating
System

In this part the conversion of the VSE system including JCL, data storage
methods, CICS, ICCF, telecommunications, spooling, and printing is
discussed. Additionally, a comparison of the use of CMS and TSO is
presented for those currently running VSE under VM.

•

Part 3, Converting VSE Languages to OS/390 Languages

Conversion of the various language compilers to their equivalent OS/390
language is discussed in this part. Also, any execution time differences are
discussed.

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 Copyright IBM Corp. 1998