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Jonathan Lewis - Oracle Core: Essential Internals for DBAs and Developers

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Jonathan Lewis Oracle Core: Essential Internals for DBAs and Developers
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Oracle Core: Essential Internals for DBAs and Developers: summary, description and annotation

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Oracle Core: Essential Internals for DBAs and Developers by Jonathan Lewis provides just the essential information about Oracle Database internals that every database administrator needs for troubleshootingno more, no less. Oracle Database seems complex on the surface. However, its extensive feature set is really built upon upon a core infrastructure resulting from sound architectural decisions made very early on that have stood the test of time. This core infrastructure manages transactions and the ability to commit and roll back changes, protects the integrity of the database, enables backup and recovery, and allows for scalability to thousands of users all accessing the same data. Most performance, backup, and recovery problems that database administrators face on a daily basis can easily be identified through understanding the essential core of Oracle Database architecture that Lewis describes in this book. Provides proven content from a world-renowned performance and troubleshooting expert Emphasizes the significance of internals knowledge to rapid identification of database performance problems Covers the core essentials and does not waste your time with esoterica What youll learn Oracles core architectural foundations How much overhead is reasonable How to recognize when youre doing too much work How to predict bottlenecks and why they will happen How to minimise contention and locking Why concurrency can slow things down significantly Who this book is for Oracle Core: Essential Internals for DBAs and Developers is aimed at database administrators ready to move beyond the beginning stage of doing work by rote towards the mastery stage, in which knowledge of what needs to be done comes not from a set of recipe-style instructions, but rather from the intimate knowledge and understanding of the system to be managed. Experienced database administrators will also find the book useful in solidifying their knowledge and filling in any missing pieces of the Oracle Database puzzle. Table of Contents Getting Started... Redo and Undo Transactions and Consistency Locks and Latches Caches and Copies Writing and Recovery Parsing and Optimizing RAC and Ruin

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Oracle Core Essential Internals for DBAs and Developers Copyright 2011 by - photo 1

Oracle Core: Essential Internals for DBAs and Developers

Copyright 2011 by Jonathan Lewis

All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and the publisher.

ISBN-13 (pbk): 978-1-4302-3954-3

ISBN-13 (electronic): 978-1-4302-3955-0

Trademarked names, logos, and images may appear in this book. Rather than use a trademark symbol with every occurrence of a trademarked name, logo, or image we use the names, logos, and images only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark.

The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights.

President and Publisher: Paul Manning
Lead Editor: Jonathan Gennick
Development Editor: James Markham
Technical Reviewer: Tanel Pder
Editorial Board: Steve Anglin, Mark Beckner, Ewan Buckingham, Gary Cornell, Morgan Ertel,
Jonathan Gennick, Jonathan Hassell, Robert Hutchinson, Michelle Lowman, James Markham,
Matthew Moodie, Jeff Olson, Jeffrey Pepper, Douglas Pundick, Ben Renow-Clarke, Dominic
Shakeshaft, Gwenan Spearing, Matt Wade, Tom Welsh
Coordinating Editor: Jessica Belanger
Copy Editor: Kimberly Burton
Production Support: Patrick Cunningham
Indexer: SPi Global
Artist: SPi Global
Cover Designer: Anna Ishchenko

Distributed to the book trade worldwide by Springer Science+Business Media, LLC, 233 Spring Street, 6th Floor, New York, NY 10013. Phone 1-800-SPRINGER, fax (201) 348-4505, e-mail orders-ny@springer-sbm.com, or visit www.springeronline.com.

For information on translations, please e-mail rights@apress.com, or visit www.apress.com.

Apress and friends of ED books may be purchased in bulk for academic, corporate, or promotional use. eBook versions and licenses are also available for most titles. For more information, reference our Special Bulk SaleseBook Licensing web page at www.apress.com/bulksales.

The information in this book is distributed on an as is basis, without warranty. Although every precaution has been taken in the preparation of this work, neither the author(s) nor Apress shall have any liability to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indirectly by the information contained in this work.

Any source code or other supplementary materials referenced by the author in this text is available to readers at http://www.apress.com. For detailed information about how to locate your book's source code, go to http://www.apress.com/source-code/.

Contents at a Glance

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About the Author Jonathan Lewis is a qualified teacher wit - photo 19

About the Author Jonathan Lewis is a qualified teacher with a mathematics - photo 20

About the Author Jonathan Lewis is a qualified teacher with a mathematics - photo 21

About the Author

Jonathan Lewis is a qualified teacher with a mathematics degree from Oxford - photo 22Jonathan Lewis is a qualified teacher with a mathematics degree from Oxford University. Although his interest in computers came to light at the tender age of about 12in the days when high-technology meant you used a keyboard, rather than a knitting needle to punch holes in cardsit wasn't until he was four years out of university that he moved into computing professionally. Apart from an initial year as an incompetent salesman (apparently the correct answer to any question is Yes, not Yes, but it's going to take several weeks of configuration and programming), he has been self-employed his entire career in the computer industry.

Jonathan's initiation into Oracle was on version 5.1 running on a PC, which he used to design and build a risk-management system for the crude-trading floor of one of the major oil companies. (He had written the first version of the system using a PC program called dBase IIIwhich did use tables and indexes and made some claims to being a relational database management system.) With Oracle, he found out what a proper relational database management system ought to be able to do, and was immediately hooked.

Since that day of revelation, Jonathan has focused exclusively on the use and abuse of the Oracle RDBMS. After three or four years of contract work helping to build large systems, he decided to move from the contractor market to the consultant market, and now shares his time evenly between short-term consultancy work, holding seminars, and research.

Jonathan is well-known in the international Oracle scene, having worked in 50 different countries and a dozen US states in the course of the last 10 years. He is a strong supporter of user groupsparticularly the UK user group (www.ukoug.org), of courseand whenever the opportunity arises, he tries to find time for speaking to user groups outside the United Kingdom, sometimes as short, evening events at the end of a day's consultancy work. He also has a blog about Oracle (http://jonathanlewis.wordpress.com) and contributes regularly (when he's not fully occupied writing books) to various magazines, forums and discussion groups.

Jonathan just celebrated his silver wedding anniversary to Diana (currently a primary school teacher and head of mathematics after many years of being an accountant). They have two children: Anna (now in her final year at Oxford University) and Simon (in his first year at York University). Despite the numerical backgrounds and mathematical skills of their parents, neither of the younger generation is the slightest bit interested in a career in computing.

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