Siebel Database Upgrade Guide for DB2 for z/OS > How the Siebel Database Upgrade Works >

About Supported Siebel Upgrade Paths

Upgrades: All upgrades.

Environments: All environments.

Supported upgrade paths are described in Siebel System Requirements and Supported Platforms on Oracle Technology Network. This guide describes how to upgrade the following installations:

• A Siebel CRM 7.x installation to Siebel CRM 8.1

  In this version of the guide, Release 7.x refers collectively to all versions of Siebel CRM Release 7 from which you can upgrade directly to Siebel CRM version 8.1, that is, versions 7.5.3 and higher. Release 7.x does not refer to versions of Siebel CRM Release 7 earlier than version 7.5.3. You cannot upgrade directly from Siebel CRM releases earlier than 7.5.3 to Siebel CRM version 8.1.

• A Siebel CRM 8.0 installation to Siebel CRM version 8.1.

  NOTE:  If you have migrated your Siebel CRM 8.0 z/OS database to Unicode format, you cannot upgrade to Siebel CRM 8.1. Unicode upgrades are not supported on the z/OS platform in Siebel CRM 8.1.

This guide does not cover the following specific upgrade paths or infrastructure changes. For help with these tasks, contact your Oracle sales representative for Oracle Advanced Customer Services to request assistance from Oracle's Application Expert Services:

• Direct upgrades to Siebel CRM version 8.1 from Siebel CRM versions earlier than 7.5.3 are not supported; you must first upgrade to Siebel CRM 7.7, or a later release.
• Changing operating system type during an upgrade, for example changing from Windows to UNIX.
• Changing database platform type during an upgrade, for example changing from Oracle 8i to IBM DB2.
• Migrating to Unicode.
• Migrating from Siebel Industry Solutions or Siebel Financial Services applications to Siebel Business Applications.

  If your enterprise uses SAP and you have implemented the Siebel Enterprise Application Integration (EAI) product, see Siebel Connector for SAP R/3.

• Upgrading from one base language to another. To achieve similar results, upgrade your existing base language and install the Siebel language pack for the desired language.