-- Oracle9i is ranked #1 among Fortune 100 companies, and will continue to increase market share with its Internet and Web services focus.-- Edward Whalen is a proven author and teacher with years of experience in the field as the President of Performance Tuning Corporation.-- Oracle DBAs are in demand and earn the highest salaries in the industry. This book is the perfect starting place for anyone interested in becoming an Oracle DBA.Sams Teach Yourself Oracle9i in 21 Days is an easily accessible tutorial that uses a friendly, conversational approach to teach readers the basics of a complex and rewarding topic. In the easily digestible 21 Days format, this book provides a complete introduction to the Oracle9i Database and the everyday tasks of the Oracle DBA, and key points important to Oracle Certification are pointed out. Topics include: Oracle Architecture and Design, Sizing and Capacity Planning, Database Administration, Tables and Views, Backup and Restoration, Database Replication, Oracle Networking, and Oracle Certification.