Upgrade Guide for DB2 UDB for z/OS > Database and UI Upgrade Planning >

Upgrading Your DB2 Software

Upgrades: All upgrades.

Environments: Development environment only.

Before you upgrade, carefully review System Requirements and Supported Platforms on Siebel SupportWeb to verify that you are using the currently supported versions of DB2 software.

• DB2 Version 7 and Version 8. If you are using an unsupported version of DB2, you must migrate to and thoroughly test the currently supported version before you upgrade to Siebel 7.8. You should perform your DB2 version migration before upgrading your Siebel database. Allow sufficient time to verify the migration before proceeding with the upgrade.
• DB2 Connect. Siebel Dedicated Web Clients (Siebel Mobile Web Client in connected mode) and Siebel Servers communicate with DB2 UDB for z/OS through DB2 Connect middleware. Verify that you are using the version of DB2 Connect supported for Siebel 7.8.

NOTE:  Make sure that all software meets the requirements specified in System Requirements and Supported Platforms on Siebel SupportWeb.