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Oracle8i Internal Services for Waits, Latches, Locks, and Memory

by

Oracle8i Internal Services for Waits, Latches, Locks, and Memory Cover

 

Synopses & Reviews

Publisher Comments:

This concise book contains detailed information about Oracle internals — information that's not readily available to Oracle customers. It lays a foundation for advanced performance tuning of the Oracle database. Based on Oracle8i release 8.1, the book describes many of the secrets of Oracle's internal services: data structures, algorithms, and undocumented Oracle system statistics. Main topics include:

  • Waits - how Oracle processes communicate via semaphores, and how to use the Oracle wait statistics to identify the source of performance problems.
  • Latches - how they keep multiple processes from inspecting protected data structures at the same time, and how to examine and control latch behavior and statistics.
  • Locks - how they work with latches to protect data structures (locks allow multiple sessions to share resources in some cases), and how locks affect performance. There is also a detailed discussion of instance locks, which are used in parallel server environments.
  • Memory - how Oracle uses memory (e.g., the various elements of the System Global Area), and how Oracle dynamically allocates and manages memory.
Oracle8i Internal Services is aimed especially at administrators and developers who need detailed internal information to do advanced performance tuning. The book will expand your repertoire of tuning solutions and troubleshooting techniques by explaining how you can use Oracle's hidden parameters and undocumented system statistics to best advantage.NOTE: The author has collected the scripts he has developed for tuning and analysis into a toolkit (known as APT, for Advanced Performance Tuning). These scripts access the Oracle X$ tables directly and provide information not otherwise available. The scripts are available to readers for free from the O'Reilly web site.

Synopsis:

Based on Oracle8i, release 8.1, this concise book contains detailed, hard-to-find information about Oracle internals (data structures, algorithms, hidden parameters, and undocumented system statistics). Main topics include waits, latches, locks (including instance locks used in parallel server environments) and memory use and management.

Synopsis:

Based on Oracle8i, release 8.1, this text contains detailed information about Oracle internals (data structures, algorithms, hidden parameters, and undocumented system statistics). Main topics include wits, latches, locks and memory use and management.

Synopsis:

This concise book contains detailed information about Oracle internals — information that's not readily available to Oracle customers. It lays a foundation for advanced performance tuning of the Oracle database. Based on Oracle8i release 8.1, the book describes many of the secrets of Oracle's internal services: data structures, algorithms, and undocumented Oracle system statistics. Main topics include waits, latches, locks (including instance locks, used in parallel server environments), and Oracle's use of memory. "Oracle8i Internal Services is aimed especially at administrators and developers who need detailed internal information to do advanced performance tuning. The book will expand your repertoire of tuning solutions and troubleshooting techniques by explaining how you can use Oracle's hidden parameters and undocumented system statistics to best advantage.

About the Author

Adams runs a small consulting company in Australia

Table of Contents

Preface; Why This Book?; Warnings; Audience for This Book; About the APT Scripts; Conventions Used in This Book; Comments and Questions; Acknowledgments; Chapter 1: Introduction; 1.1 The Oracle Kernel Layers; 1.2 The Kernel Services; Chapter 2: Waits; 2.1 Semaphores; 2.2 Wait Statistics; 2.3 Reference; Chapter 3: Latches; 3.1 Latches and Locks; 3.2 Parent and Child Latches; 3.3 Latch Gets; 3.4 Advanced Latching Control; 3.5 Reference; Chapter 4: Locks; 4.1 Lock Usage; 4.2 Lock Modes; 4.3 Enqueue Locks; 4.4 Row Cache Enqueues; 4.5 Library Cache Locks and Pins; 4.6 DML Locks; 4.7 Buffer Locks; 4.8 Sort Locks; 4.9 Reference; Chapter 5: Instance Locks; 5.1 The Lock Manager; 5.2 Global Locks; 5.3 PCM Instance Locks; 5.4 Other Instance Locks; 5.5 Reference; Chapter 6: Memory; 6.1 The SGA; 6.2 The Shared Pool; 6.3 Process Memory; 6.4 Reference; Colophon;

Product Details

ISBN:
9781565925984
Author:
Adams, Steve
Publisher:
O'Reilly Media
Location:
Sebastopol, CA :
Subject:
Computers
Subject:
Database management
Subject:
Relational databases
Subject:
Computer software
Subject:
Security
Subject:
Database Management - Oracle
Subject:
Oracle
Subject:
Microcomputer Programming
Subject:
Computer Books: Database
Subject:
Security - General
Subject:
Database Management - General
Subject:
Database design
Subject:
algorithms;data structures;oracle8i;parameters;statistics
Copyright:
Edition Number:
1st ed.
Edition Description:
Print PDF
Series:
O'Reilly Oracle
Series Volume:
13
Publication Date:
19991031
Binding:
TRADE PAPER
Language:
English
Illustrations:
Yes
Pages:
134
Dimensions:
9 x 6 x 0.38 in 0.48 lb

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Related Subjects

Computers and Internet » Database » Applications
Computers and Internet » Database » Design
Computers and Internet » Networking » Computer Security
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Oracle8i Internal Services for Waits, Latches, Locks, and Memory Used Trade Paper
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Product details 134 pages O'Reilly & Associates - English 9781565925984 Reviews:
"Synopsis" by ,
Based on Oracle8i, release 8.1, this concise book contains detailed, hard-to-find information about Oracle internals (data structures, algorithms, hidden parameters, and undocumented system statistics). Main topics include waits, latches, locks (including instance locks used in parallel server environments) and memory use and management.
"Synopsis" by , Based on Oracle8i, release 8.1, this text contains detailed information about Oracle internals (data structures, algorithms, hidden parameters, and undocumented system statistics). Main topics include wits, latches, locks and memory use and management.
"Synopsis" by , This concise book contains detailed information about Oracle internals — information that's not readily available to Oracle customers. It lays a foundation for advanced performance tuning of the Oracle database. Based on Oracle8i release 8.1, the book describes many of the secrets of Oracle's internal services: data structures, algorithms, and undocumented Oracle system statistics. Main topics include waits, latches, locks (including instance locks, used in parallel server environments), and Oracle's use of memory. "Oracle8i Internal Services is aimed especially at administrators and developers who need detailed internal information to do advanced performance tuning. The book will expand your repertoire of tuning solutions and troubleshooting techniques by explaining how you can use Oracle's hidden parameters and undocumented system statistics to best advantage.
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