Upgrade Guide for DB2 UDB for z/OS and OS/390 > Database and UI Upgrade Planning >

About Upgrading Your RDBMS

Upgrades: All upgrades.

Environments: All environments.

If your currently installed RDBMS version is not supported in the new release, you must upgrade your RDBMS before performing the Siebel Database upgrade. For information on supported RDBMS versions, see System Requirements and Supported Platforms on Siebel SupportWeb.

If your currently installed RDBMS version is supported in the new release, and you plan to upgrade your RDBMS, you can do so before or after upgrading your Siebel Database.

The following guidelines and requirements are for planning your RDBMS upgrade.

NOTE:  When you upgrade the RDBMS, also be sure to upgrade your client database connectivity software. See System Requirements and Supported Platforms on Siebel SupportWeb.