Help: Please suggest good books for OCA 9i.

[Hai Lin]

Hi Guys,
I only found Sybex's OCA/OCP: Introduction to Oracle9i SQL Study Guide, and OCA/OCP: Oracle9i DBA Fundamentals I Study Guide.
Since I have little Oracle knowledge, are these book good enough for passing exam or you guys have better suggestion?
Prefer any book like (SCWCD exam study it, or Head first EJB, whose style are esay to understand, hate those books like textbook)

Thanks a lot!
Hai