Oracle Unified Directory
Oracle Unified Directory is an all-in-one directory solution with storage, proxy, synchronization and virtualization capabilities.
While unifying the approach, it provides all the services required for high-performance Enterprise and carrier-grade environments. Oracle Unified Directory ensures scalability to billions of entries, ease of installation, elastic deployments, enterprise manageability and effective monitoring.

New features with OUD 11gR2:

• Location based search for social networking applications
• Support of Oracle database enterprise user security (EUS)
• Oracle Optimized Solutions for Oracle Unified Directory (OOS4OUD) delivering 3x performance with 1/3 of the cost