Recovery from media failures can be a tricky process; it requires a thorough knowledge of the topics we cover in the next two chapters, as well as a good deal of practice. In order to simplify the process of recovery, Oracle introduced the Data Recovery Advisor , (DRA). The DRA is a facility to diagnose problems related to database recovery and advise the DBA on the necessary steps to solve them. It is specific to situations where a backup can be used to recover a database; thus it cannot assist a DBA with user failures or when no backup exists. Furthermore, it does not currently support advanced database features such as Real Application Clusters and standby databases with Data Guard. However, the DRA can be very useful in media failure situations such as the loss, corruption, or accidental renaming of datafiles. The DRA can be invoked using RMAN or Enterprise Manager. As an example of the capabilities of the DRA, we'll see it at work through the Enterprise...
OCA Oracle Database 11g: Database Administration I: A Real-World Certification Guide
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.
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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
Free Chapter
Introducing the Oracle Relational Database System
Installing the Oracle Database Software
Creating the Oracle Database
Examining the Oracle Architecture
Managing Oracle Storage Structures
Managing the Oracle Instance
Managing Security
Managing Concurrency
Configuring an Oracle Network
Managing Database Performance
Understanding Backup and Recovery Concepts
Performing Database Backups
Performing Database Recovery
Migrating Data
Preparing for the Certification Exam
Test Your Knowledge – Answers
Index
Customer Reviews