VSAM Demystified

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. 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 Redbook is intended as a supplement to existing product manuals. It is intended to be used as an initial point of reference for VSAM functions.

This book also builds upon the subject of Record Level Sharing and the new z/OS feature called DFSMStvs.

Chapter 1. VSAM basics
Chapter 2. Performance
Chapter 3. VSAM problem determination and recovery
Chapter 4. Managing your VSAM data sets
Chapter 5. VSAM Record Level Sharing
Chapter 6. DFSMStvs
Appendix A. Sample code
Appendix B. Miscellaneous performance items
Appendix C. Catalog performance
Appendix D. Information APARs

Publish Date
12 September 2003

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Author(s)
Mary Lovelace
Dave Lovelace
Rama Ayyar
Alvaro Sala
Valeria Sokal

ISBN
0738453234

IBM Form Number
SG24-6105-01

Number of pages
508