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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 OS/390® 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 the information in this book, you need to be familiar with some of the
architecture of CICS and the programming interface to CICS. General-use
programming interface information is given in the
CICS Application Programming
Reference
manual and the
CICS System Programming Reference
manual.
Resource definition information is in the
CICS Resource Definition Guide
.
To use the following chapters you need to be familiar with the telecommunications
access methods (IBM ACF/VTAM® and IBM TCAM):
v “Chapter 8. Writing a terminal error program”
v “Chapter 9. Writing a node error program”
v “Chapter 10. Writing a program to control autoinstall of terminals”
v “Chapter 12. Writing a program to control autoinstall of APPC connections”
v “Chapter 26. Using TCAM with CICS”.
If your task involves error processing, you may need to consult the
CICS Messages
and Codes
manual, the
CICS Problem Determination Guide
,orthe
CICS Diagnosis
Reference
manual.
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 OS/390. The term “VTAM®” refers to
ACF/VTAM. The term “TCAM” refers to the DCB interface of ACF/TCAM. The term
“APPC” (advanced program-to-program communication) refers to the LUTYPE6.2
intersystem connection (ISC) protocol.
© Copyright IBM Corp. 1977, 1999 xxi