what books would you guys recomend on the subject of pl/sql programming? im looking for something very in-depth, something that does a good job of explaining whats going on in the db when you run various code blocks. keep in mind that i am not a beginner (although i am still very new to pl/sql, i dont need to have my hand held) and i am developing on oracle 9i.
also, i would apriciate being made aware of any websites that you think would helpfull. so far ive covering the basics of pl/sql at hot-oracle.com.