I just started a new job as a dba and placed some books on my desk.
Applied Mathematics for Database Professionals by Lex de Haan and Toon Koppelaars
SQL Design Patterns by Vadim Tropashko
Beginning Oracle Database 11g Administration by Iggy Fernandez
Expert Oracle Database Architecture by Tom Kyte
Oracle 11g New Features by Brian Carr, John Garmany, V. J. Jain, Steve Karam and Lutz Hartmann
Advanced Oracle SQL Programming my book…
I have not worked as an 11g dba before, I will surely learn a lot in those books (and giveaway my book) !