Oracle Middleware

Oracle Products are primarily of 3 types
-Database
-Packaged Applications
-Middleware

Oracle Middleware products are categorized as

-SOA/BPM
I have already written about SOA/BPM line of products here
-Web2.0
Under this Enterprise Content management, portal servers from both the oracle and bea products.
-Application Grid
This has basically the app server (weblogic, oc4j) and the various grid technology products like Coherence, web cache etc.
-Identity management
-BI/EPM

Each category has lot of products for any kind of customer requirements and application patterns.