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Rolling Back the Siebel Enterprise Server

Use the following procedure to roll back the current release of the Siebel Enterprise Server software on a single computer or operating system instance and revert to the previously installed software version. You can do this only when you have installed the current release as a migration installation for an existing installation of Siebel CRM version 8.1.1.x, version 8.2.2.x, version 15.x, or version 16.x.

NOTE:  To be able to roll back the current release and revert to a previous version, you must have retained the backup directory to which the previous installation was moved during the migration installation. During that installation, if the original Siebel Enterprise Server installation directory was named ses, for example, then it was renamed from ses to ses_pre17.0.

NOTE:  This topic describes only rolling back a migration installation, not rolling back a patchset installation. For patchset uninstallation (rollback), see Siebel Patchset Installation Guide for Siebel CRM, 1614310.1 (Article ID) on My Oracle Support.

This topic is part of Uninstalling Siebel Enterprise Server or Siebel Application Interface.

To roll back the Siebel Enterprise Server

1. Review all of the information in About Uninstalling Siebel Business Applications, particularly the requirements and limitations.
2. Verify that the renamed original installation directory, such as ses_pre17.0, exists.
3. Stop the Siebel services for the Siebel CRM version 17.0 installation.
4. You must use the correct rollback uninstallation method for your situation, as follows. For more information, see Requirements for Uninstalling Siebel Business Applications.
   • If you originally installed Siebel CRM version 8.1.1 (using the InstallShield installer) and are now rolling back to Siebel CRM version 8.1.1 through version 8.1.1.7, then use the Oracle Universal Installer uninstallation option to uninstall Siebel CRM version 17.0. Follow the procedure described in Uninstalling the Siebel Enterprise Server, but do not remove configuration data. After performing this task, go to Step 13. (Step 7 through Step 10 do not apply in this case.)
   • If you are rolling back to Siebel CRM version 8.1.1.8 or later, version 8.2.2.x, version 15.x, or version 16.x, then use the manual steps that follow. Go to the next step. (Step 7 through Step 10 apply in this case only.)
5. Delete the Siebel Gateway Name Server service using one of the following commands:
   • Windows. SIEBEL_ROOT\gtwysrvr\bin\siebctl.exe -S gtwyns -d
   • UNIX. SIEBEL_ROOT/gtwysrvr/bin/siebctl -S gtwyns -d
6. Stop all the running processes of application containers, which were installed and started during migration installation. You can do so by following one of the following methods:
   • Windows. Execute SIEBEL_ROOT\applicationcontainer\bin\shutdown.bat
   • UNIX. Execute SIEBEL_ROOT/applicationcontainer/bin/shutdown.sh

     For more information, see Stopping and Starting the Application Container.

7. Delete the directory representing the current installation of Siebel Enterprise Server for the current release. For example, if the directory name is ses, then delete this directory.
8. Rename the backup directory representing the previously installed software to use the original installation directory name for Siebel Enterprise Server. Rename the original (renamed) directory, such as ses_pre17.0, to ses (depending on your original installation directory name).
9. Delete the program folder that was created for the current release, which contains the shortcut for running the Database Configuration Wizard.

   The program directory was defined based on the installation directory. For example, for an installation directory of C:\siebel\ses, the program folder is Siebel_Home_c_siebel_ses.

10. If you rolled back to Siebel CRM version 8.1.1.8 or later, version 8.2.2.x, version 15.x, or version 16.x, then verify the version number by using the opatch command, as described in Verifying Installation for Siebel Business Applications.
11. Open the file SIEBEL_ROOT/gtwysrvr/bin/gateway.cfg in any text editor and make a note of the port number mentioned in the value for the GatewayConnect parameter. You will replace the GATEWAYPORT string in the command mentioned in Step 12 with this port number.
12. Create the Siebel Gateway Name Server service using one of the following commands:
    • Windows. SIEBEL_ROOT\gtwysrvr\BIN\siebctl.exe -h SIEBEL_ROOT/gtwysrvr -S gtwyns -a -g "/f SIEBEL_ROOT\gtwysrvr\ADMIN\siebns.dat /t GATEWAYPORT /c SIEBEL_ROOT\gtwysrvr\bin\gateway.cfg" -q
    • UNIX. SIEBEL_ROOT/gtwysrvr/bin/siebctl -r SIEBEL_ROOT/gtwysrvr -S gtwyns -a -g "/f SIEBEL_ROOT/gtwysrvr/sys/siebns.dat /t GATEWAYPORT /c SIEBEL_ROOT/gtwysrvr/bin/gateway.cfg" -q
13. Restart the Siebel services.
14. Run the Siebel Configuration Wizards, as necessary, to perform any required configuration tasks.

    NOTE:  You must use the Configuration Wizards for the version of the software that you rolled back to. Additional requirements apply to the post-rollback environment

15. If Oracle Configuration Manager was not configured before you performed a migration installation of Siebel Enterprise Server, then, after a rollback to the original installation, you must configure this instance of Oracle Configuration Manager manually in order for it to function properly.

Related Topics

Installing Siebel Business Applications Server Modules

Verifying Installation for Siebel Business Applications

About Uninstalling Siebel Business Applications

Process of Removing Configuration Data