Oracle E-Business Suite Release 11i runs Oracle9i Application Server 1.0.2.2.2 as its internal application tier. Oracle E-Business Suite Release 12 runs Oracle Application Server 10g. Both EBS 11i and 12 can optionally be integrated with externally-deployed Fusion Middleware 11g components such as Oracle Internet Directory, Discoverer, Portal, Oracle Business Intelligence Enterprise Edition, and others.

Oracle Fusion Middleware 11g is Oracle's latest suite of related and interoperable application tier server products. Some Fusion Middleware products have dependencies on other Fusion Middleware products. As an E-Business Suite DBA or systems administrator, it is essential that you have a