Book Description
This IBM redbook provides IMS performance monitoring and tuning information. This book differs from previous IMS performance and tuning redbooks in that there is less emphasis on the internal workings of IMS and more information on why and how certain options may affect the performance of IMS.

Most of the information in the previous redbook IMS Version 7 Performance Monitoring and Tuning Update, SG24-6404 is still valid and in most cases will continue to be valid in any future versions of IMS. This book is not an update or rewrite but instead attempts to be more of a guide than a reference. As such the team gathered experiences data from actual production environments as well as from IBM benchmarks and solicited input from experts in as many areas as possible.

You should be able to find some valuable new information and perhaps validate some things you might have questioned. Hardware and software characteristics are constantly changing but hopefully the information you find here will provide a basis to help you react to that change and keep you IMS running efficiently.

In this redbook we introduce some methods and tools for monitoring and tuning IMS systems and in addition to IMS TM and DB system wide performance considerations, we dedicate separate chapters for application considerations, IMS and DB2 interoperability, Parallel Sysplex environment and On Demand considerations.

Table of Contents
Chapter 1. Defining the performance problem in an IMS environment
Chapter 2. Monitoring methodology
Chapter 3. Monitoring tools
Chapter 4. IMS and Workload Manager
Chapter 5. Database performance
Chapter 6. Transaction manager performance
Chapter 7. Performance considerations for DBCTL
Chapter 8. System considerations
Chapter 9. Application considerations
Chapter 10. Performance considerations with DB2
Chapter 11. IMS Parallel Sysplex considerations
Chapter 12. IMS On Demand performance
Appendix A. Guidelines and recommendations
Appendix B. Coding Examples

Special Notices
These pages are Web versions of IBM Redbooks- and Redpapers-in-progress. They are published here for those who need the information now and may contain spelling, layout and grammatical errors.
This material has not been submitted to any formal IBM test and is published AS IS. It has not been the subject of rigorous review. Your feedback is welcomed to improve the usefulness of the material to others.

IBM assumes no responsibility for its accuracy or completeness. The use of this information or the implementation of any of these techniques is a customer responsibility and depends upon the customer's ability to evaluate and integrate them into the customer's operational environment.
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