Optimizing VSAM Performance

This topic covers the following subtopics, describing many of the options and factors that influence or determine the performance of both VSAM and the operating system.

Topic
Optimizing Control Interval Size
Optimizing Control Area Size
Optimizing Free Space Distribution
Using Index Options
Obtaining Diagnostic Information
Migrating from the Mass Storage System
Using Hiperbatch

Most of the options are specified in the access method services DEFINE command when a data set is defined. Sometimes options can be specified in the ACB and GENCB macros and in the DD AMP parameter.