The Administration Server provides access to application data about user accounts, group lists, access privileges, organizational units, and other user- and group-specific information.
User and group information is stored either in flat files in text format, or in a directory server such as Oracle Directory Server Enterprise Edition, which supports LDAP (Lightweight Directory Access Protocol). LDAP is an open directory access protocol that runs over TCP/IP (Transmission Control Protocol/Internet Protocol) and is scalable to a global size and millions of entries.