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  • Book Overview & Buying Oracle Database XE 11gR2 Jump Start Guide
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Oracle Database XE 11gR2 Jump Start Guide

Oracle Database XE 11gR2 Jump Start Guide

By : Asif Momen
4.3 (3)
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Oracle Database XE 11gR2 Jump Start Guide

Oracle Database XE 11gR2 Jump Start Guide

4.3 (3)
By: Asif Momen

Overview of this book

Oracle Database XE 11gR2 is an excellent beginner-level database and is a great platform to learn database concepts. "Oracle Database XE 11gR2 Jump Start Guide" helps you to install, administer, maintain, tune, back up and upgrade your Oracle Database Express Edition. The book also helps you to build custom database applications using Oracle Application Express.Using this book, you will be able to install Oracle Database XE on Windows/Linux operating system.This book helps you understand different database editions and it guides you through the installation procedure with the aid of screenshots. You will learn to interact with the database objects. You will gain a solid understanding of stored sub-programs which is followed by an introduction to Oracle Application Express (APEX). Solid database performance tuning strategies are also discussed in this book followed by backup and recovery scenarios. All in all, "Oracle Database XE 11gR2 Jump Start Guide" delivers everything that you should know to get started with Oracle Database administration.
Table of Contents (20 chapters)
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Oracle Database XE 11gR2 Jump Start Guide
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface

Memory structure


Oracle is available on almost every platform. For this reason, the physical architecture of Oracle is different on different operating systems. For example, on a Linux operating system, Oracle is implemented as multiple operating system processes whereas on Windows, Oracle is implemented as a single-threaded process.

Oracle uses memory to store information such as cached data, shared SQL and PL/SQL code, information about a session, and cursor pointers.

As mentioned earlier, Oracle memory structure is composed of two types of memory System Global Area and Process Global Area. The following sections will cover more on these topics.

System Global Area

System Global Area (SGA) is a large shared memory area that all server and background processes access. The SGA is broken into various pools as shown in the following diagram:

These pools are explained as follows:

  • Database buffer cache: This is where Oracle stores database blocks before writing them to the disk and after reading...

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Oracle Database XE 11gR2 Jump Start Guide
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