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Oracle Database 11gR2 Performance Tuning Cookbook

You're reading from Oracle Database 11gR2 Performance Tuning Cookbook Shifting your Oracle Database into top gear takes a lot of know-how and fine-tuning ability. The 80+ recipes in this Cookbook will give you those skills along with the ability to troubleshoot if things starts running slowly.

Product type Paperback

Published in Jan 2012

Publisher Packt

ISBN-13 9781849682602

Length 542 pages

Edition 1st Edition

Languages

Java

Tools

Oracle Database

Concepts

Database Administration

Author (1):

Ciro Fiorillo

View More author details

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 FREE CHAPTER

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$ROLLSTAT

This view contains rollback segments statistics.

Fields

The most relevant view fields are as follows:

USN: The rollback segment number
LATCH: The latch for the rollback segment
EXTENTS: The number of extents in the rollback segment
RSSIZE: The size of the rollback segment in bytes
WRITES: The number of bytes written to the rollback segment
XACTS: The number of active transactions
GETS The number of header gets
WAITS: The number of header waits
STATUS: The rollback segment status, it can be ONLINE, OFFLINE, PENDING OFFLINE, or FULL

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Authors (1)

Ciro Fiorillo

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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