This chapter describes the ways in which you can improve the performance of the production environment upgrade by tuning the production upgrade scripts in a test environment. This chapter contains the following topics:

• About Tuning the Upgrade Scripts
• Optimizing Unload and Load Job Performance
• Adding the Statistics Clause to Load Cards

NOTE:  The Siebel Database Upgrade Guide describes how to use the Siebel Upgrade Tuner to tune your production upgrade scripts. The Upgrade Tuner is not supported on the IBM DB2 for z/OS database platform.