Single sign-on is a key feature of a portal. Since a portal provides a single entry point to several different applications or types of information, the user should be able to only log in once and be able to access all of the different applications in the portal without logging in repeatedly. Single sign-on is implemented in Commerce Enabled Portal through the use of a shared LDAP directory. All Web applications in the portal must define attributes that are required and supported for the application in the LDAP definition. This results in one consolidated LDAP schema that is shared by all applications.
When you install WebSphere Portal following the information in the WebSphere Portal information center WebSphere Portal information center, you will configure it with an LDAP server. You will configure it with the LDAP server you configured with WebSphere Portal.
Note: The Commerce Enabled Portal development environment does not require single sign-on.