This chapter describes some of the important database-related issues to consider when planning an upgrade to Siebel CRM 8.1. Also review the applicable topics in the chapter in Siebel Database Upgrade Guide that describes the Siebel database and UI upgrade planning tasks before starting your upgrade. This chapter includes the following topics:

• Planning Resources for Upgrading to Siebel CRM Version 8.1 on z/OS
• Planning Changes to the Physical Layout of the Schema
• Testing Before a Production Upgrade
• Considering Code Page Support
• About Executing Jobs Using Siebel-Scheduled Mode or Vendor-Scheduled Mode
• Staging and Target Database Planning
• Obtaining Required Software and Hardware
• Obtaining Required IBM Utilities
• About Using the DSNTIAUL Utility
• Obtaining Required Security Privileges
• Planning Backup and Recovery Stages
• About Creating a Schedule for the Upgrade
• About Estimating Database Size
• Upgrading Your DB2 Software