Thomas Kyte’s Good Oracle (Must Read) for DBAs and Developers
———————————————————————————
1. Expert Oracle Database Architecture: 9i and 10g Programming Techniques and Solutions
2. Expert one-on-one: Oracle
3. Effective Oracle By Design
(you can go for 1 as it contains 10G and also 3 if possible )
For SQL*PLUS and PL/SQL the following are good books
————————————————————————
1 Mastering Oracle SQL and SQL*PLUS — By Lex De Haan
2 Mastering PL/SQL — By Connor McDonald
For General Oracle Concepts from Scalability and Performance of Oracle Applications perspective
———————————————————————————————————————-
1. Scaling Oracle 8i (Eventhough the name says 8i it is a very good book whose concepts still apply)
— By James Morle(Expert on Scalability,RAID and SAN/NAS concepts)
(Good thing is this book can be downloaded from www.scalabilities.co.uk site — http://www.scaleabilities.co.uk/book/scalingOracle8i.pdf)
Other Good Books are :
1.Practical Oracle 8i — Jonathan Lewis (Again the name’8i’ is a misnomer as it is a good book that holds true still)
2. Cost Based Oracle Fundamentals — Jonathan Lewis (A very good book of recent times )
If you want to understand how Oracles Cost Based Optimizer works, you will want to read this book. To get you started, there is a pdf of Chapter 5 (Clustering Factor) that you can download from Apress
To discussion :
http://metalink.oracle.com
http://forums.oracle.com
http://asktom.oracle.com
Documentation :
Akdora's Blog 
I noticed that this is not the first time at all that you write about the topic. Why have you decided to touch it again?
🙂 you’re right, if i find some time, I’ll update it.
Thx