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Planning to Install Multiple Instances of Siebel Business Applications

This topic is part of Planning Your Siebel Deployment.

This topic describes issues in installing multiple instances of similar or dissimilar versions of Siebel Business Applications on the same computer or operating system instance.

Installing Multiple Instances of Similar Versions of Siebel Business Applications

By default, the Siebel installers automatically install Siebel Business Applications software in directories with unique names that will not conflict with other Siebel modules that you install on the same computer or operating system instance. To install another instance of the same version of a module on a single computer or operating system instance (where applicable), specify a custom installation path.

However, installing multiple instances of some modules might cause problems. For example:

• You cannot install multiple instances of the same version (or any version) of Siebel Gateway on the same computer or operating system instance. The reason for this is that installing and configuring the Siebel Gateway creates a service which cannot coexist in multiple instances for different installations.
• You must take care to avoid conflicts in port number usage whenever you install or configure multiple Siebel components or multiple instances on the same computer or operating system instance. You specify multiple port numbers when you install and configure Siebel components.
• Restrictions apply for installing multiple instances of Siebel Application Interface. You must install them in different locations and assign unique port numbers for the application containers. For details, see Requirements for Installing and Configuring the Siebel Application Interface.

For important related considerations, see also About Installing Siebel Business Applications and Preparing the Hardware and Planning Topologies.

NOTE:  In this context, same version refers to multiple installations of the current release, Siebel Innovation Pack 2017.

All Siebel Enterprise Server components that you install together on the same computer or operating system instance are installed into the same root directory (such as C:\Siebel on Microsoft Windows or /Siebel on UNIX), except in the case described in the note that follows. These components include Siebel Gateway, Siebel Server, Database Configuration Utilities, EAI Connector, and Siebel Enterprise Cache. Restrictions and guidelines apply to collocating Siebel components, as noted in About Installing Siebel Business Applications. See also File and Directory Naming Conventions.

As an example of restrictions for collocating Siebel components, you must install Siebel Application Interface in a different directory (such as C:\Siebel_AI on Microsoft Windows or /Siebel_AI on UNIX) than other Siebel components, or on a different computer or operating system instance.

NOTE:  If you have already installed Siebel Enterprise Server for the current release, and you require additional Siebel Enterprise Server components (for example, Siebel Gateway is already installed and you want to install a Siebel Server), then you can install a new instance, with the modules you require, in a different directory or on a different computer or operating system instance. (Then install the latest Siebel Patchset release for all of the applicable installed instances.) For more information about options in this situation, see General Requirements for Installing and Configuring Siebel Enterprise Server Components.

Installing Multiple Instances of Dissimilar Versions of Siebel Business Applications

Multiple versions of some Siebel components can be installed on the same computer or operating system instance. Sometimes you might have to do this as part of some upgrade scenarios.

• Each instance of Siebel Gateway must be installed on a separate computer or operating system instance, regardless of the version.
• If you install multiple versions of Siebel Server on the same computer or operating system instance, then you must install them in different directories and assign unique port numbers for the application containers.
• Multiple instances of dissimilar versions of Siebel Application Interface do not apply in the current release, because it is the first release for this module.

Related Topics

Installing Siebel Business Applications Server Modules

Requirements for Installing and Configuring the Siebel Application Interface

Related Books

Siebel Database Upgrade Guide