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About Uninstalling Siebel Applications

Topics in this chapter describe how to uninstall Siebel Business Applications software. Separate instructions are provided for various server-based and client-based software modules. You must observe all applicable requirements for uninstalling each module.

CAUTION:  To successfully uninstall, you must use the supported methods documented in this chapter. Do not attempt to uninstall Siebel products by deleting product directories.

In general, this chapter describes how to uninstall the current software, version 8.0 (or any applicable version 8.0.x.x). For information about uninstalling previous releases, see Uninstalling Earlier Versions of Siebel Applications.

After a full uninstallation has completed successfully, you may need to reboot your machine. Afterwards, you can safely delete remaining installation directories.

For troubleshooting suggestions, see Troubleshooting Uninstallation.

Scenarios for Uninstalling

Uninstallation may be necessary or appropriate for a variety of reasons. For example:

• You installed the software mainly for the purpose of understanding the installation and configuration process, and now you need to remove this software before you can install software to be used for purposes such as development.
• You made a mistake during installation that can be corrected by uninstalling and reinstalling.
• You previously installed a software component (such as a Siebel Server) that you no longer require, or you have upgraded your hardware and are moving software to a new server.
• You included languages or optional products during initial installation that you do not require. All installed items entail maintenance costs in the form of disk space and volume of data included in future patch releases.

  Although languages and some optional products (for example, optional components of the Siebel Server) cannot be selectively uninstalled, it may be desirable to do a full uninstallation and reinstall without the unneeded items. Note that such uninstallations may not be feasible or worthwhile if multiple products have already been installed.

  NOTE:  If you installed and deployed languages you do not require, you can alternatively remove and re-create a Siebel Server configuration with fewer deployed languages, or re-create an SWSE logical profile with fewer deployed languages and reapply it to each installed SWSE instance. For these tasks you do not need to uninstall. See also Preparing to Run Siebel Server Components After Installing, Configuring the SWSE, and related topics.

CAUTION:  Determining whether or not it is appropriate or necessary to uninstall an existing installation is beyond the scope of this chapter. Some uninstallation scenarios may present critical factors that must be considered in order to avoid loss of configuration data or other problems.

When moving to a new version of Siebel Business Applications (upgrading), also refer to the instructions in Siebel Database Upgrade Guide. If you are migrating to a new database platform, consult Siebel Expert Services.

Clustered nodes present special requirements that may change part of the installation and uninstallation process from what is described in this guide. For more information, see Siebel Deployment Planning Guide.

For additional information about deployment scenarios or tasks that may include uninstallation, see Going Live with Siebel Business Applications, Siebel System Administration Guide, and other relevant documentation.

Patch releases (also called maintenance releases) may in some cases be uninstalled separately from the base installation. In other cases, certain restrictions may apply and it may not be possible to uninstall a previously installed patch release. Full uninstallation is always possible for any existing installation. For more information about uninstalling patch releases, see the applicable Siebel Maintenance Release Guide on My Oracle Support.

Limitations for Uninstalling

Some items cannot be uninstalled selectively, for example:

• Installable components that may be selected individually using the Custom installation type (or that are included with a Typical or Compact installation) cannot be selectively uninstalled.

  If you want to uninstall a particular component of this type, you must uninstall the software where it was installed and reinstall with the components you require. Or, you can disable any component you do not need and deploy your applications using only those components you require.

  NOTE:  Siebel Management Agent, if included as part of Siebel Server installation, cannot be selectively uninstalled. To be able to uninstall Siebel Management Agent, exclude it from your Siebel Server installations, and install it separately. See also Uninstalling Siebel Management Agent.

  For more information about enabling and disabling Siebel Server components, see Siebel System Administration Guide.

• Siebel Language Packs cannot be selectively uninstalled.

  If you want to uninstall a particular Language Pack, you must uninstall the software where it was installed and reinstall with the Language Packs you require.

  Or, you can ignore any Language Pack you do not need and deploy your applications using only those languages you require. For example, at stated earlier in this topic, you can remove and re-create Siebel Server or SWSE configurations in order to specify fewer deployed languages.

  You can add Language Packs to existing installations later as your requirements change.

  For more information about multilingual deployments, see About Installing and Deploying with Multiple Languages. See also Siebel Global Deployment Guide.