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Oracle Database 11gR2 Performance Tuning Cookbook

You're reading from Oracle Database 11gR2 Performance Tuning Cookbook

Product type Book

Published in Jan 2012

Publisher Packt

ISBN-13 9781849682602

Pages 542 pages

Edition 1st Edition

Languages

Concepts

Database Administration

Author (1):

Ciro Fiorillo

Table of Contents (21) Chapters

Oracle Database 11gR2 Performance Tuning Cookbook

Credits

About the Author

Acknowledgement

About the Reviewers

www.PacktPub.com

Preface

1. Starting with Performance Tuning

2. Optimizing Application Design

3. Optimizing Storage Structures

4. Optimizing SQL Code

5. Optimizing Sort Operations

6. Optimizing PL/SQL Code

7. Improving the Oracle Optimizer

8. Other Optimizations

9. Tuning Memory

10. Tuning I/O

11. Tuning Contention

Dynamic Performance Views

A Summary of Oracle Packages Used for Performance Tuning

Index

V$INSTANCE_RECOVERY

This view monitors the mechanisms available to the user/DBA to limit the I/O needed for recovery.

Fields

The most relevant view fields are as follows:

RECOVERY_ESTIMATED_IOS: The estimated number of data blocks to process during recovery
ESTIMATED_MTTR: The estimated time recovery based on the current system load
TARGET_MTTR: The Mean Time To Recover (MTTR) target value in seconds
LOG_FILE_SIZE_REDO_BLKS: The number of redo blocks required to be sure that a log switch won't occur before the checkpoint completes
LOG_CHKPT_INTERVAL_REDO_BLKS: The number of redo blocks that will be processed during recovery to satisfy the LOG_CHECKPOINT_INTERVAL parameter
LOG_CHKPT_TIMEOUT_REDO_BLKS: The number of redo blocks that will be processed during recovery to satisfy the LOG_CHECKPOINT_TIMEOUT parameter
ACTUAL_REDO_BLKS: The current number of redo blocks needed to recover
TARGET_REDO_BLKS: The current target number of redo blocks that must be processed for recovery

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Authors (1)

Ciro Fiorillo

Ciro Fiorillo is an IT professional and consultant with experience of more than a decade in different roles (developer, analyst, DBA, project manager, data and software architect) among software industries. He has worked on different technologies and architectures, such as Oracle, SQL Server, Delphi, C# and .NET Framework, C/C++, Java, PHP, COBOL, Fortran, and Tibco. Ciro is currently employed as Lead Software and Data Architect with FinWin Srl, a software house specializing in banking and loans applications. As a freelancer he writes articles for websites and printed magazines about software and computing, participates in workshops, and teaches C++ and Fortran parallel programming with Intel Software tools. Ciro can be reached at ciro@cirofiorillo.com.

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