Skip to main content

VSAM Demystified

An IBM Redbooks publication


Published on 05 March 2013, updated 24 August 2022

  1. .EPUB (3.9 MB)
  2. .PDF (3.7 MB)

Apple BooksGoogle Play Books

Share this page:   

ISBN-10: 0738437433
ISBN-13: 9780738437439
IBM Form #: SG24-6105-02

Authors: Mary Lovelace, Jose Dovidauskas, Alvaro Salla and Valeria Sokal

    menu icon


    Virtual Storage Access Method (VSAM) is one of the access methods used to process data. Many of us have used VSAM and work with VSAM data sets daily, but exactly how it works and why we use it instead of another access method is a mystery.

    This book helps to demystify VSAM and gives you the information necessary to understand, evaluate, and use VSAM properly. This book also builds upon the subject of Record Level Sharing and DFSMStvs. It clarifies VSAM functions for application programmers who work with VSAM. The practical, straightforward approach should dispel much of the complexity associated with VSAM. Wherever possible an example is used to reinforce a description of a VSAM function.

    This IBM® Redbooks® publication is intended as a supplement to existing product manuals. It is intended to be used as an initial point of reference for VSAM functions.

    Table of Contents

    Chapter 1. VSAM basics

    Chapter 2. Managing your VSAM data sets

    Chapter 3 .Guidelines for ICF catalog and VSAM

    Chapter 4. VSAM performance

    Chapter 5. VSAM Record Level Sharing

    Chapter 5. DFSMStvs

    Chapter 6. VSAM problem determination and recovery

    Appendix A. Sample code

    Appendix B. Miscellaneous performance items


    Others who read this also read