This thread is trageted to discuss the possible ways to restrict duplicate sessions in siebel application.
 

The Siebel File System consists of a shared directory that is accessible to all Siebel Servers in the Siebel Enterprise. It contains the physical files used by the Siebel clients and Siebel Servers.

In a Web SSO implementation, users are authenticated by a third party at the Web-site level. Siebel Business Applications support this mode of authentication by providing an interface that allows the third party to pass user information to a Siebel application. Once authenticated by the third party, a user does not have to explicitly log into the Siebel application.
Single sign-on (SSO) is a session/user authentication process that permits a user to enter one name and password in order to access multiple applications. The process authenticates the user for all the …

Application Object Managers (AOMs) host the Business Objects layer and Data Objects layer of the Siebel architecture.
 It is a server component that creates and processes data at multiple levels.

UI layer (supported by the Siebel Web Engine) 
Business object layer 
Processes business logic
Data object layer (supported by Data Manager) 

The Siebel Enterprise Server is a logical grouping of Siebel Servers that supports a group of users accessing a common Siebel Database Server,Siebel Enterprise Server can be configured, managed, and monitored as a single logical group, allowing the Siebel administrator to start, stop, monitor, or set parameters for Siebel Servers within a Siebel Enterprise Server.

S_PARTY model is the major change seen in Siebel 7.X and later version.
The S_PARTY table is the base table for all the party related entities:  Person (Contact), User, Employee, Partner User, Account, Division, Organization, Partner Organization, Household, Access Group and User list.

This article will help to understand the Siebel architecture and servers; we will also discuss the physical architecture of Siebel setup and the basic understanding of Siebel clients, Web Server, Siebel Web Server Extensions (SWSE), .cfg, Siebel Enterprise Server, Siebel Gateway Name Server, Siebel Database Server.

This Installation and Configuration Technical Note is designed to supplement the Siebel 2000 Wireless Guide, which is available on the Siebel 2000 Bookshelf 

 Siebel Vertical Competency Practices are specifically made for one domain, They fulfill are desired requirement of specific industry. we have disscued a litlle about the siebel horizontals and Verticals , now we are going to discuss about all verticals in detail.