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Oracle Database 12c Backup and Recovery Survival Guide

You're reading from   Oracle Database 12c Backup and Recovery Survival Guide A comprehensive guide for every DBA to learn recovery and backup solutions

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Product type Paperback
Published in Sep 2013
Publisher Packt
ISBN-13 9781782171201
Length 440 pages
Edition 1st Edition
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Toc

Table of Contents (22) Chapters Close

Oracle Database 12c Backup and Recovery Survival Guide
Credits
About the Author
Acknowledgement
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
1. Understanding the Basics of Backup and Recovery 2. NOLOGGING Operations FREE CHAPTER 3. What is New in 12c 4. User-managed Backup and Recovery 5. Understanding RMAN and Simple Backups 6. Configuring and Recovering with RMAN 7. RMAN Reporting and Catalog Management 8. RMAN Troubleshooting and Tuning 9. Understanding Data Pump 10. Advanced Data Pump 11. OEM12c and SQL Developer Scenarios and Examples – A Hands-on Lab Index

Using incremental, multi-section, multiplexing, and parallelism


In general, the biggest concern for DBAs is those long running backup jobs which take hours to complete and they want to bring the backup time down by any means. If you see the same issue and want to improve the time elapsed for your RMAN backup jobs, you can use a few features that are inbuilt to RMAN. The RMAN features that can help greatly are:

  • Incremental backups

  • Multi-section backups

  • Multiplexing

  • Parallelism

A full backup would definitely take a very long time compared to incremental backups. Because incremental backups only consider the modified blocks to be included in the backup, the time taken for them to complete is far lower than the normal backups. Using a block change tracking file keeps the information of the modified blocks, lets the incremental backup read that information, skips reading the entire data file, and makes the incremental backup even more efficient and time saving.

For large sized files, multi-section...

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