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About Installing in Upgrade Environments

When you install Siebel Business Applications products, you may be creating a new deployment or you may be installing updated software to be used in a deployment that is being upgraded from a previous release of the Siebel applications—such as an upgrade from version 7.8.x to version 8.0.

You install your new Siebel software before upgrading the Siebel Database.

For detailed information about upgrading the Siebel Database, and about tasks you perform before installing or upgrading, see Siebel Database Upgrade Guide or Siebel Database Upgrade Guide for DB2 UDB for z/OS. See also any relevant documents on My Oracle Support. Review all applicable documentation before you install or upgrade.

CAUTION:  As part of installing Siebel software in an upgrade environment, in general, you do not perform any database-related tasks described in this guide.

In an upgrade environment:

• You do install the component called Database Configuration Utilities on a Siebel Server, as described in Installing Siebel Enterprise Server and Related Components.
• You do not create the database instance on the RDBMS, as described in Configuring the RDBMS. (After the upgrade is complete, you may need to modify database parameters for your RDBMS platform to match settings described in that chapter.)
• You do not perform the tasks described in Configuring the Siebel Database.

After installing and upgrading, some additional tasks may apply which do not apply for new installations. Some of these tasks are described in Siebel Application Deployment Manager Guide and Going Live with Siebel Business Applications. See also Preparing to Run Siebel Server Components After Installing.

When you install Siebel Business Applications in some upgrade scenarios, you may in some cases be able to install different versions of a Siebel product on the same machine, if this scenario is valid for particular products and may be helpful to you. For more information, see Installing Multiple Instances of Siebel Business Applications.

After installing the base Siebel software (such as version 8.0), you can install any applicable patch releases (such as Fix Pack or Quick Fix releases). In general, you install such patch releases before you initiate the upgrade process. After upgrading, you can install additional patch releases when they become available.

CAUTION:  After you have started upgrading, do not install any patch releases until the upgrade is complete.

For information about installing patch releases for version 8.0, see About Installing Siebel Releases and refer to the applicable Siebel Maintenance Release Guide on My Oracle Support.

Instructions in this guide apply both for new installations and upgrades, except where noted.