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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

Real-Time ADDM


ADDM is further enhanced in the new Enterprise Manager Cloud Control 12c version with a real-time feature. This is known as Real-Time ADDM (supported for any Oracle database Target of version 10.2.0.4 and higher) and is very useful for situations when the database has become very slow, or has hung and normal ADDM cannot work since it may not be possible to even log in to the database. Even if it is possible to log in to the database, taking an AWR snapshot or running an ADDM task may worsen the problem.

Sometimes it may be due to just one blocking session that the entire database arrives at this unresponsive state.

Often, not being able to find out the root cause of the problem, DBAs may resort to bouncing the database to fix the situation. But this is a very drastic step as all uncommitted transactions will be aborted and rolled back, and mid-tier connections and states will also be lost. The actual cause of the problem will not be found as all diagnostic information will...

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