This chapter describes the Siebel Database and file system tasks you must perform after you upgrade to Siebel CRM version 8.1 on the z/OS database platform. In addition to performing these tasks, you must also perform the applicable tasks in the chapter in Siebel Database Upgrade Guide that describes postupgrade tasks for the Siebel Database and file system. This chapter contains the following topics:

• Updating File System Attachments
• Reapplying Schema Customizations to the Siebel Database
• Regenerating the Database Template File