Where to Begin
I have been a SQL Server 2000 DBA for the past four years, and I am keen to learn Oracle. Please let me know where to start.
I get this question a lot—so I've come up with a road map of where to start with the Oracle documentation.
It can be quite daunting to figure out where to begin, but I recommend Oracle Database Concepts for everyone. Then I branch out into developer and DBA tracks, as shown in Figure 1.