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

Performing RMAN hot backups


As we mentioned, the command-line syntax of RMAN is very similar, regardless of the type of backup being performed. Unlike user-managed backups, performing hot backups while the database is online is almost identical in process to offline backups. The main difference is the state of the database: hot backups run while the database is up and available.

Performing full hot backups

To begin with our hot backup, we should first bring it online. We can also do this from the RMAN command line. We must also remember that to run a hot backup, we must be in ARCHIVELOG mode. Our database is currently in a mount state, so we need to open it first.

Now that the database is open, because we're already in ARCHIVELOG mode, we can simply execute a backup database command. However, let's expand our RMAN skill set by taking the opportunity to learn a little more about RMAN syntax.

We can interact with RMAN through the command line and execute many basic statements. However, we can...