Oracle Database Online Documentation 11g
Release 2 (11.2)
Build applications around Oracle databases using the languages and platforms of your choice.
New to Oracle Database 11g
Information you need for the latest release.
Supporting documentation treats advanced topics. In general, the 2 Day + books refer you to these topics when needed.
If you are familiar with earlier Oracle releases and are moving to Oracle Database 11g, these books describe the new features, and explain how to upgrade your database.
This book explains how certain Oracle Database features are licensed.