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Oracle Enterprise Manager Cloud Control 12c: Managing Data Center Chaos

You're reading from  Oracle Enterprise Manager Cloud Control 12c: Managing Data Center Chaos

Product type Book
Published in Dec 2012
Publisher Packt
ISBN-13 9781849684781
Pages 394 pages
Edition 1st Edition
Languages
Author (1):
PORUS HOMI HAVEWALA PORUS HOMI HAVEWALA
Profile icon PORUS HOMI HAVEWALA
Toc

Table of Contents (19) Chapters close

Oracle Enterprise Manager Cloud Control 12: Managing Data Center Chaos
Credits
About the Author
Acknowledgements
About the Reviewers
www.PacktPub.com
Preface
1. Chaos at Data Centers 2. Enter Oracle Cloud Control 3. Ease the Chaos with Performance Management 4. Ease the Chaos with Configuration Management and Security Compliance 5. Ease the Chaos with Automated Provisioning 6. Ease the Chaos with Automated Patching 7. Ease the Chaos with Change Management 8. Ease the Chaos with Test Data Management 9. Ease the Chaos with Data Masking 10. Ease the Chaos with Exadata Management 11. Real-life Examples and Case Studies, and It's a Wrap: The Future is the Cloud Index

Compare Period ADDM


Compare Period ADDM (supported for any Oracle database Target of version 10.2.0.4 and higher) is another new feature related to ADDM in this new version. This helps in comparative performance analysis. For example, you may have noticed that the performance of your database is worse on some days and better on other days—and you want to know the reason for this. Are some other batch programs running on some days?

Or, you have a RAC database and some instances are faster and you want to know if the workload is unevenly distributed. If any changes have been made across those periods, that is also important to understand.

You access this feature by going to Performance | AWR | Compare Period ADDM.

This will take two AWR snapshot periods and will perform a full ADDM analysis across those periods. SQL commonality is also measured and displayed, so that you can get an idea if the periods that are being compared are roughly similar or not in terms of their SQL workload. This is...

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