Book Image

Oracle 11g R1 / R2 Real Application Clusters Handbook

Book Image

Oracle 11g R1 / R2 Real Application Clusters Handbook

Overview of this book

RAC or Real Application Clusters is a grid computing solution that allows multiple nodes (servers) in a clustered system to mount and open a single database that resides on shared disk storage. Should a single system (node) fail, the database service will still be available on the remaining nodes. RAC is an integral part of the Oracle database setup: one database, multiple users accessing it, in real time. This book will enable DBAs to get their finger on the pulse of the Oracle 11g RAC environment quickly and easily. This practical handbook documents how to administer a complex Oracle 11g RAC environment. It covers all areas of the Oracle 11g R1 RAC environment, with bonus R2 information included, and is indispensable if you are an Oracle DBA charged with configuring and implementing Oracle11g. It presents a complete method for the design, installation, and configuration of Oracle 11g RAC, ultimately enabling rapid administration of Oracle 11g RAC environments.Packed with real-world examples, expert tips, and troubleshooting advice, the book begins by introducing the concept of RAC and High Availability. It then dives deep into the world of RAC design, installation, and configuration, enabling you to support complex RAC environments for real-world deployments. Chapters cover RAC and High Availability, Oracle 11g RAC Architecture, Oracle 11g RAC Installation, Automatic Storage Management, Troubleshooting, Workload Management, and much more. By following the practical examples in the book, you will learn every concept of the RAC environment and how to successfully support complex Oracle 11g R1 and R2 RAC environments for various deployments in real-world situations.
Table of Contents (20 chapters)
Oracle 11g R1/R2 Real Application Clusters Handbook
Credits
About the Authors
About the Reviewers
Preface

Best practices for Streams in an RAC environment


While the installation and configuration of Oracle 11g Streams is outside the scope of this chapter, we will provide you with some best practices and design considerations for Oracle Streams with RAC environments. To ensure a successful Streams implementation in an Oracle RAC environment, use the following recommendations when constructing a Streams environment.

Additional configuration of RAC environments for a Source Database

The archive log threads from all instances must be available to any instance running a capture process. This is true for both local and downstream capture.

It is recommended not to have Flash Recovery Area (FRA) as the location of the archived logs because logfiles can be removed from the FRA, even if capture needs them to restart. In the event that you decide not to use the FRA to store your archived logfiles, another option is to back these logs up to another disk volume on your SAN or NAS filesystem. For added protection...