Siebel Installation Guide for UNIX > Installing Siebel CRM Server Modules > Installing and Uninstalling Siebel CRM 18.12 Update >

Preinstallation Tasks

Note the following information before you begin installing Siebel CRM 18.12 Update:

• After downloading Siebel CRM 18.12 Update, run the Siebel Image Creator utility to create a network image for the release. Run the installers from this image. For more information, see Creating the Siebel Installation Image on the Network.
• Siebel Gateway and Siebel Server services are automatically stopped when you install or uninstall Siebel CRM 18.12 Update.
• Auto-Start Services are now available for the Siebel Gateway Server and Siebel Server. To enable this functionality, set the AUTOSTART_SERVICES parameter to Yes or No in:
  • Disk1/install/oneclick.properties (to auto-start services after installing Siebel CRM 18.12 Update)
  • <PROD_HOME>/oui/bin/patchrollback.properties (to auto-start services after a rollback)

    NOTE:  The AUTOSTART_SERVICES parameter setting also applies to uninstallation (rollback), where you want to auto-start services after a rollback to an earlier version.

• Review the database-related tasks that might apply after you install Siebel CRM 18.12 Update. For more information, see Installing the Siebel Database on the RDBMS. See also Siebel Database Upgrade Guide.