I am moderate user of oracle. I have to administrate oracle 9i & oracle 10g in a small privately owned envoirnment. kindly refer me some good, easy to implement, practical DBA book so that i can kick start my work in near future.
I would suggest that you start at the beginning. Got to the following site, then read and understand the concepts manual and then read the dba in 2 day book under getting started. This is for Oracle 10, but the same books are available for the earlier versions.