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The best books for Oracle DBAs and developers - 10g update
By an Amazon.com customer
Practical Oracle8i(TM): Building Efficient DatabasesPractical Oracle8i(TM): Building Efficient Databases by Jonathan Lewis
Buy new: $42.49 / Used from: $6.00
The best book of its kind for those designing and developing using Oracle databases
Effective Oracle by Design (Osborne ORACLE Press Series)Effective Oracle by Design (Osborne ORACLE Press Series) by Thomas Kyte
Buy new: $40.49 / Used from: $23.00
Doing Oracle development? - this is a must have
Expert One-on-One OracleExpert One-on-One Oracle by Thomas Kyte
Buy used from: $9.96
So is this
Oracle Wait Interface: A Practical Guide to Performance Diagnostics & Tuning (Osborne ORACLE Press Series)Oracle Wait Interface: A Practical Guide to Performance Diagnostics & Tuning (Osborne ORACLE Press Series) by Kirtikumar Deshpande
Buy new: $34.22 / Used from: $25.00
Along with the one following, the definitive books for tuning Oracle systems using the Oracle Wait Interface
Optimizing Oracle PerformanceOptimizing Oracle Performance by Cary Millsap
Buy new: $23.07 / Used from: $8.00
Along with the one prior, the definitive books for tuning Oracle systems using the Oracle Wait Interface
Mastering Oracle PL/SQL: Practical SolutionsMastering Oracle PL/SQL: Practical Solutions by Connor McDonald
Buy new: $40.45 / Used from: $33.74
Excellent reference for those doing Oracle PL/SQL development
Scaling Oracle8i(TM): Building Highly Scalable OLTP System ArchitecturesScaling Oracle8i(TM): Building Highly Scalable OLTP System Architectures by James Morle
Buy new: $49.99 / Used from: $3.00
Designing optimal Oracle architectures. A holistic view with an eye towards the overall system context.
Oracle 10g  Data WarehousingOracle 10g Data Warehousing by Lilian Hobbs PhD
Buy new: $58.31 / Used from: $51.94
Another fine and up to date Oracle data warehouse book. This one written by a group of Oracle technical managers and developers.
Oracle Database 10g: The Complete Reference (Osborne ORACLE Press Series)Oracle Database 10g: The Complete Reference (Osborne ORACLE Press Series) by Kevin Loney
Buy new: $46.61 / Used from: $20.00
The classic, general Oracle complete reference.
Oracle DBA Guide to Data Warehousing and Star SchemasOracle DBA Guide to Data Warehousing and Star Schemas by Bert Scalzo
Buy new: $38.99 / Used from: $18.99
Useful, practical book for implementing data warehouses using Oracle. Good companion to other DW books on this list.
Oracle9i RMAN Backup & RecoveryOracle9i RMAN Backup & Recovery by Robert Freeman
Buy new: $36.49 / Used from: $2.99
Detailed, comprehensive. Lots of both RMAN technical details and example scenarios.
Expert Oracle Database 10<i>g</i> Administration (Expert's Voice)Expert Oracle Database 10<i>g</i> Administration (Expert's Voice) by Sam R. Alapati
Buy used from: $40.98
Comprehensive, well written and up to date 10g reference.
Pro Oracle Database 10<i>g</i> RAC on Linux: Installation, Administration, and Performance (Expert's Voice in Oracle)Pro Oracle Database 10<i>g</i> RAC on Linux: Installation, Administration, and Performance (Expert's Voice in Oracle) by Julian Dyke
Buy new: $65.17 / Used from: $36.97
Expansive guide to RAC planning and deploymment
Cost-Based Oracle Fundamentals (Expert's Voice in Oracle) (v. 1)Cost-Based Oracle Fundamentals (Expert's Voice in Oracle) (v. 1) by Jonathan Lewis
Buy new: $40.39 / Used from: $24.00
Jonathan Lewis' latest effort is a worthy successor to his tremendous first book.
Linux Enterprise Cluster: Build a Highly Available Cluster with Commodity Hardware and Free SoftwareLinux Enterprise Cluster: Build a Highly Available Cluster with Commodity Hardware and Free Software by Karl Kopper
Buy used from: $148.28
A complementary book to the RAC title above