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Preface

What this book is about

This book provides the information needed to extend and modify an IBM

CICS

Transaction Server for z/OS

system to match your requirements. It describes how

you can tailor your system by coding exit programs, by replacing specific

CICS-supplied default programs with versions that you write yourself, and by

adapting sample programs.

Who this book is for

This book is for those responsible for extending and enhancing a CICS system to

meet the special processing needs of an installation.

What you need to know to understand this book

To use this information, you must be familiar with some of the architecture of CICS

and the programming interface to CICS. Programming interface information is

described in the CICS Application Programming Reference and the CICS System

Programming Reference.

Resource definition information is described in the CICS Resource Definition Guide.

To use the following information, you must be familiar with the IBM ACF/VTAM

telecommunications access method:

v Chapter 9, “Writing a node error program,” on page 479

v Chapter 10, “Writing a program to control autoinstall of terminals,” on page 515

v Chapter 12, “Writing a program to control autoinstall of APPC connections,” on

page 543

If your task involves error processing, you might have to consult CICS Messages

and Codes, the CICS Problem Determination Guide,ortheCICS Diagnosis

Reference.

How to use this book

The parts and chapters of the book are self-contained. Use an individual part or

chapter as a guide when performing the task described in it.

Notes on terminology

In this book, the term “CICS”, used without any qualification, refers to the CICS

element of IBM CICS Transaction Server for z/OS. The term “VTAM” refers to

ACF/VTAM. The term “APPC” (advanced program-to-program communication)

refers to the LUTYPE6.2 intersystem connection (ISC) protocol.

The term “MVS” refers to those services and functions that are provided by the

Base Control Program (BCP) of OS/390

. The BCP is a base element of OS/390.

CICS Transaction Server for z/OS, Version 3 Release 2 supports CICS applications

written in:

v Assembler language

IBM SC34-6814-04 User Manual

Questions and Answers: