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Oracle 11g R1/R2 Real Application Clusters Essentials

You're reading from   Oracle 11g R1/R2 Real Application Clusters Essentials Design, implement, and support complex Oracle 11g RAC environments for real world deployments

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Product type Paperback
Published in May 2011
Publisher Packt
ISBN-13 9781849682664
Length 552 pages
Edition 1st Edition
Languages
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Toc

Table of Contents (20) Chapters Close

Oracle 11g R1/R2 Real Application Clusters Essentials
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
1. High Availability FREE CHAPTER 2. Oracle 11g RAC Architecture 3. Clusterware Installation 4. Automatic Storage Management 5. Managing and Troubleshooting Oracle 11g Clusterware 6. RAC Database Administration and Workload Management 7. Backup and Recovery 8. Performance Tuning 9. Oracle 11g Clusterware Upgrade 10. Real-world Scenarios 11. Enabling RAC for EBS 12. Maximum Availability Additional Resources and Tools for the Oracle RAC Professional Index

Overview of Automatic Storage Management (ASM)


Automatic Storage Management (ASM) is an option and a new feature of Oracle 10g and onwards that simplifies the storage management for all Oracle database file types. It renders the capabilities of a volume manager and filesystem together into the Oracle database kernel. Although, it inherits the Stripe And Mirror Everything (SAME) functionality, it strips the data (extents) evenly across the ASM disks of a disk group by default and provides the mirroring functionality as an option. The management and administration of ASM is made easy through a well-known set of SQL statements, such as, CREATE, ALTER, DROP, and through GUI tools.

While the ASM was initially intended for managing and maintaining only the Oracle database files and other related files, its functionality has been significantly improved in 11g R1 and R2 versions to manage all types of data. The following are some of the key features and benefits of ASM:

  • It simplifies the storage...

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