Oracle9i Data Guard Concepts and Administration Release 1 (9.0.1) Part Number A88808-01 |
|
Standby databases are the most frequently used and most effective disaster recovery solution for Oracle databases. Oracle9i Data Guard enhances Oracle8i Standby Databases to provide database recovery that meets the essential disaster recovery solution for Oracle databases, and also survives mistakes, corruptions, and disasters such as earthquakes and hurricanes.
This guide describes Oracle9i Data Guard concepts and helps you configure and implement standby databases that can take over production operations if your primary database becomes unusable.
This preface contains these topics:
Oracle9i Data Guard Concepts and Administration is intended for database administrators (DBAs) who administer the backup, restore, and recovery operations of an Oracle database system.
To use this document, you should be familiar with relational database concepts and basic backup and recovery administration. You should also be familiar with the operating system environment under which you are running Oracle.
This document contains:
This chapter offers a general overview of the Oracle9i Data Guard architecture and environment.
This chapter explains how to assess and configure a Data Guard environment, set up the standby database, create the standby database files, and configure network files for both the primary and standby databases. It also describes the initialization parameters related to the Data Guard environments.
This chapter introduces log transport services. It provides procedures and guidelines for configuring log transport services on a primary and standby database. It also provides guidelines and procedures for configuring data availability modes, network tuning for log transport services, and log transport services monitoring.
This chapter introduces log apply services. It provides guidelines for managing a standby database in managed recovery mode and read-only mode.
This chapter introduces role management services. It provides information on database role transitions, as well as monitoring and responding to events that affect the database role.
This chapter describes common database scenarios such as creating, recovering, failing over, switching over, configuring, and backing up standby and primary databases.
This reference chapter describes initialization parameters for each Oracle instance, including the primary database and each standby database in the Data Guard environment.
This reference chapter provides syntax and examples for the attributes of the LOG_ARCHIVE_DEST_
n
initialization parameters.
This reference chapter provides SQL statements that are useful for performing operations on a standby database.
This reference chapter lists fixed views that contain useful information for monitoring the Data Guard environment. It summarizes the columns contained in each view and provides a description for each column.
This appendix discusses troubleshooting for the standby database.
This appendix describes managing a standby database in manual recovery mode. It provides instructions for manually resolving archive gaps and renaming standby files not captured by conversion parameters.
This appendix describes how to achieve asynchronous network I/O when using the log writer process (LGWR) to transmit primary database online redo log modifications to standby databases.
This appendix describes the primary and standby database configurations in a Real Application Cluster environment.
Every reader of Oracle9i Data Guard Concepts and Administration is presumed to have read:
You will often need to refer to the following guides:
In addition to the Data Guard product, you might want to read about the following Oracle products and features that provide disaster recovery and high data availability solutions:
In North America, printed documentation is available for sale in the Oracle Store at
http://oraclestore.oracle.com/
Customers in Europe, the Middle East, and Africa (EMEA) can purchase documentation from
http://www.oraclebookshop.com/
Other customers can contact their Oracle representative to purchase printed documentation.
To download free release notes, installation documentation, white papers, or other collateral, please visit the Oracle Technology Network (OTN). You must register online before using OTN; registration is free and can be done at
http://technet.oracle.com/membership/index.htm
If you already have a username and password for OTN, then you can go directly to the documentation section of the OTN Web site at
http://technet.oracle.com/docs/index.htm
This section describes the conventions used in the text and code examples of this documentation set. It describes:
We use various conventions in text to help you more quickly identify special terms. The following table describes those conventions and provides examples of their use.
Code examples illustrate SQL, PL/SQL, SQL*Plus, or other command-line statements. They are displayed in a monospace (fixed-width) font and separated from normal text as shown in this example:
SELECT username FROM dba_users WHERE username = 'MIGRATE';
The following table describes typographic conventions used in code examples and provides examples of their use.
Oracle's goal is to make our products, services, and supporting documentation accessible to the disabled community with good usability. To that end, our documentation includes features that make information available to users of assistive technology. This documentation is available in HTML format, and contains markup to facilitate access by the disabled community. Standards will continue to evolve over time, and Oracle is actively engaged with other market-leading technology vendors to address technical obstacles so that our documentation can be accessible to all of our customers. For additional information, visit the Oracle Accessibility Program Web site at
http://www.oracle.com/accessibility/
JAWS, a Windows screen reader, may not always correctly read the code examples in this document. The conventions for writing code require that closing braces should appear on an otherwise empty line; however, JAWS may not always read a line of text that consists solely of a bracket or brace.
|
Copyright © 1996-2001, Oracle Corporation. All Rights Reserved. |
|