If you have previously upgraded your database from Version 10gRx to 11gRx, then in order to use Active Data Guard the compatible parameter must at least be set to
11.0.0
as shown in the following query:SQL> show parameter compatible NAME TYPE VALUE ------------------------------- ----------- -------------------- compatible string 11.2.0.0.0
If you are using Active Data Guard for the first time, your standby database will definitely be in the
MOUNT
status and MRP will be in progress; hence, cancel MRP. After cancelling MRP, make sure MRP is not running any more either through the OS levelgrep
commands or thev$managed_standby
view as shown in the following query:SQL> select db_unique_name,open_mode from v$database; DB_UNIQUE_NA OPEN_MODE ------------ -------------------- INDIA_UN MOUNTED SQL> alter database recover managed...
Oracle Data Guard 11gR2 Administration : Beginner's Guide
Oracle Data Guard 11gR2 Administration : Beginner's Guide
Overview of this book
Data Guard is the high availability, disaster recovery and data replication solution for Oracle Databases.
With the huge growth of Data Guard it's getting harder to encounter an Oracle DBA not dealing with Data Guard. Since it's a common DBA task to provide high availability of databases, Data Guard is a must-know topic for every Oracle Database Administrator."Oracle Data Guard 11g R2 Beginner's Administration Guide" is a practical guide that provides all the information you will need to configure and maintain Data Guard. This book will show you what Data Guard can really do.By following the practical examples in this book, you'll learn to set up your Data Guard Broker, the management framework for Data Guard configurations. Learn and implement different data protection modes, perform role transitions between databases (switchover and failover) and configure Active Data Guard. Next, we will dive into the features of Snapshot Standby. The book progresses into looking at Data Guard configuration with other Oracle products (such as EM, RAC, and RMAN) and patch databases in Data Guard. The final chapters will cover commonly encountered Data Guard issues and Data Guard best practices, which are very important to make a Data Guard configuration perfect and take maximum advantage of Data Guard properties.
Table of Contents (19 chapters)
Oracle Data Guard 11gR2 Administration Beginner's Guide
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Pop Quiz Answers
Free Chapter
Getting Started
Configuring the Oracle Data Guard Physical Standby Database
Configuring Oracle Data Guard Logical Standby Database
Oracle Data Guard Broker
Data Guard Protection Modes
Data Guard Role Transitions
Active Data Guard, Snapshot Standby, and Advanced Techniques
Integrating Data Guard with the Complete Oracle Environment
Data Guard Configuration Patching
Common Data Guard Issues
Data Guard Best Practices
Index
Customer Reviews