The LDAP naming service is the supported naming service for Trusted Extensions. If your site is not yet running the LDAP naming service, configure an Oracle Directory Server Enterprise Edition (Directory Server) on a system that is configured with Trusted Extensions.
If your site is already running an LDAP Server, then you need to add the Trusted Extensions databases to the server. To access the Directory Server, you then set up an LDAP proxy on a Trusted Extensions system.