This graphic shows a typical Oracle Application Server 10g Release 2 (10.1.2) topology on the left and a typical Oracle Fusion Middleware 11g on the right.
The 10g Release 2 (10.1.2) topology consists of:
Two middle tiers, one containing an OC4J instance, Oracle Portal, and Oracle HTTP Server; the other containing OC4J, Discoverer, and Oracle HTTP Server.
A database containing the metadata repository and schemas for Oracle Portal and Oracle BI Discoverer.
Two additional middle tiers, each consisting of an OC4J instance an Oracle HTTP Server instance. These two middle tiers are grouped into an OracleAS cluster.
The entire farm can be viewed from the Application Server Control Farm page, which lists the various application server instances in the farm.
The Oracle Fusion Middleware 11g farm consists of:
An Oracle WebLogic Server domain, with an administration server and two managed servers. The administration server contains the Oracle WebLogic Server Administration Console and Fusion Middleware Control.
A database containing the 11g metadata repository and schemas for Oracle Portal and Oracle BI Discoverer.
Two additional managed servers where Java EE applications are deployed. These two managed servers are configured as a single Oracle WebLogic Server cluster.