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Trang 2Oracle Database
Administration for
Michelle Malcher
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Trang 3Copyright © 2011 by The McGraw-Hill Companies, Inc All rights reserved Except as permitted under the United States Copyright Act of 1976,
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Trang 8This book is dedicated to all of the hard-working DBAs who learn of ways to work smarter and then share that information so that others can learn as well.
Trang 9About the Author
Michelle Malcher is a Senior Database Administrator at DRW Holdings with
more than 12 years of experience in database development, design, and administration She has expertise in performance tuning, security, data modeling, and database architecture of very large database environments She has administered environments supporting multiple database platforms, including Oracle, SQL Server, and Sybase As a DBA, she has strived to design, implement, and maintain stable, reliable, and secure database environments
in order to support the business and important business processes
Michelle enjoys contributing to the database technology user community
by speaking at conferences and being on the Independent Oracle User Group (IOUG) Board of Directors as the Director of Education She feels that being able to learn from others and teach what you know are key ways
to enjoy working with databases There is always something to learn and challenge us to come up with better solutions
About the Technical Editor
Kimberly Floss is a Manager of Database Services for a large Fortune
500 company She has managed teams responsible for both database
administration and database engineering for Oracle, DB2, Teradata,
and SQL Server She has been largely responsible for database/system administration, general architecture, system performance monitoring,
tuning, backup and recovery, and capacity planning of hundreds of
database environments
Kimberly is a former President of the Independent Oracle User Group (IOUG) and has been a board member for six years She currently serves
as a member of the Conference Committee for IOUG She also serves on the board for the North Central Teradata User Group and has served as a content reviewer for the Professional Association of SQL Server (PASS) She is a frequent speaker at conferences such as Oracle OpenWorld and Collaborate
Kimberly has a BS in Computer Information Systems from Purdue and an MBA with emphasis in MIS from Loyola University She teaches a Database Applications and SQL Programming class at a local community college
Trang 10ACKNOWLEDGMENTS xi
INTRODUCTION xiii
1 The Database Administrator 1
General DBA Skills 2
Where Do DBAs Belong in an Organization? 4
Database Installation Planning 5
Leveraging Skills 5
Database Migrations 9
Summary 13
2 Oracle Internals 15
Memory Structures 16
Oracle Memory Parameters 17
Sizing the SGA and PGA 20
Where Are the master, msdb, and tempdb Databases? 22
System-level Information 23
Data Dictionary Views 26
Jobs and Schedules 28
Templates and Temporary Tables 28
Services and Processes 29
sp_configure Options and Parameters 32
Viewing and Setting Parameters 33
Getting Started with Some Parameters 34
Undo, Redo, and Logs 38
Transaction Logs Versus Redo Logs 38
Undo and Beyond 39
Summary 42
v