Book Image

OCA Oracle Database 11g: Database Administration I: A Real-World Certification Guide

Book Image

OCA Oracle Database 11g: Database Administration I: A Real-World Certification Guide

Overview of this book

Oracle Database Server is the most widely used relational database in the world today. This book gives you the essential skills to master the fundamentals of Oracle database administration and prepares you for Oracle DBA certification."OCA Oracle Database 11g: Database Administration I: A Real-World Certification Guide" prepares you to master the fundamentals of Oracle database administration using an example driven method that is easy to understand. The real world examples will prepare you to face the daily challenges of being a database administrator.Starting with the essentials of why databases are important in today's information technology world and how they work, you are then guided through a full, customized installation of the Oracle software and creating your own personal database. We then examine fundamental concepts of Oracle, including architecture, storage structures, security, performance tuning, networking, and instance management. Finally, we take an in-depth look at some of the most important concepts in the daily life of an Oracle DBA - backup, recovery, and data migration."OCA Oracle Database 11g: Database Administration I: A Real-World Certification Guide" provides you with the skills you need in order to become a successful Oracle DBA, both for certification and real life tasks.
Table of Contents (24 chapters)
OCA Oracle Database 11g: Database Administration I: A Real-World Certification Guide
Credits
Foreword
About the Author
About the Reviewer
www.packtpub.com
Preface
Index

Understanding Oracle Recovery Manager


Although, when one correctly, user-managed backups are a perfectly acceptable way to back up an Oracle database, it has probably become clear that these methods can easily introduce problems with human error. Using these methods, there is a possibility to omit needed files, back up the wrong files, or back them up in a wrong order, making recovery an extremely difficult proposition. In order to safely back up an enterprise-level database, Oracle felt that it was necessary to introduce an application that could be used as the standard tool. Today, that tool is called Oracle Recovery Manager.

Introducing RMAN

In Oracle Version 7, the Enterprise Backup Utility (EBU) was released as a part of the standard Oracle database software installation. It was Oracle's first attempt to provide an enterprise-grade solution for backing up and recovering databases. The original EBU was less than successful; so, in Version 8, Oracle retooled the EBU and released Oracle...