Preface

This document provides information about Oracle Data Guard broke r, a management and monitoring interface that helps you configure, monitor, and control an Oracle Data Guard broker configuration.

This preface contains these topics:

Audience
Documentation Accessibility
Organization
Related Documentation
Conventions

Audience

Oracle Data Guard Broker is intended for database administrators (DBAs) and system administrators who want to use the Oracle Data Guard broker to automate many of the tasks involved in configuring and monitoring an Oracle Data Guard configuration.

The discussions herein assume that readers are already familiar with Oracle Data Guard, Oracle Enterprise Manager, and the ne twork services provided by Oracle Net Services.

Documentation Accessibility

Our goal is to make Oracle products, services, and supporting documentation accessible, with good usability, to the disabled community. 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 marku p to facilitate access by the disabled community. Standards will continue to evolve over time, and Oracle is actively engaged with ot her market-leading technology vendors to address technical obstacles so that our documentation can be accessible to all of our custom ers. For additional information, visit the Oracle Accessibility Program Web site at

http://www.oracle.com/accessibility/

Accessibility of Code Examples in Documentation

JAWS, a Windows screen reader, may not alway s 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.

Accessibility of Links to External Web Sites in Documentation

This documentation may contain links to Web sites of other companies or organizations that Oracle does not own or contr ol. Oracle neither evaluates nor makes any representations regarding the accessibility of these Web sites.

Organization

This docu ment contains:

Chapter 1, " Oracle Data Guard Broker Concepts"

This chapter introdu ces Oracle Data Guard broker concepts and terminology.

Chapter 2, " Managing Broker Configura tions"

This chapter helps you set up and install Oracle Data Guard and configure a Data Guard broker configuration.

Chapter 3, " Managing Databases"

This chapter describes configuring and managing databa ses. It also describes states, status, and properties of databases.

Chapter 4, " Role Mana gement"

This chapter describes managing database role transitions, including switchover, and failover.

Chapter 5, " Data Guard Scenarios - Using Oracle Enterprise Manager"

This chapter shows how to use the Data Guard graphical user interface (GUI) to create, manage, and monitor a broker configuration.

Chapte r 6, " Data Guard Scenarios - Using DGMGRL CLI"

This chapter describes how to use the Data Guard command-line interface to create, manage, and monitor a broker configuration.

Chapter 7, " Data Guard Command-Line Interf ace Reference"

This chapter provides reference information for the Data Guard command-line interface.

Chapter 8, " Database Properties"

This chapter provides reference information about database propertie s.

Chapter 9, " Troubleshooting Data Guard"

This chapter provides troublesho oting information for Data Guard.

Appendix A, " Data Guard Broker Changed and Deprecated Features"

This appendix provides information about changed and deprecated features.

Glossary

Related Documentation

Refer to the following documentation for more information about Oracle Data Guard:

Oracle Data Guard Concepts and Administrati on.
Oracle release notes specific to your operating system.
Oracle installation guide specific to your operating system.
For more information about Oracle Data Guard GUI, see the online help available with this graphical user interface. To access the online help topics, click Help on the menu bar in Da ta Guard GUI.

Refer to the following documentation for information about related products:

Oracle Database Concepts
Oracle Net Services Administrator's Guide
Oracle Enterprise Manager product documentation set

Printed documentation is available for sale in the Oracle Store at

http://oraclestore.oracle.com/

To download free release notes, installation documentation, white papers, or other collateral, please visit the Oracle Techno logy Network (OTN). You must register online before using OTN; registration is free and can be done at

http://otn.oracle.com/membership/

If you already have a username and pass word for OTN, then you can go directly to the documentation section of the OTN Web site at

http://otn.oracle.com/documentation/

Conventions

This section describes the conventio ns used in the text and code examples of this document. The following table describes those conventions and provides examples of thei r use.

Convention	Meaning	Example
[ ]	Brackets enclose one or more optional items. Do not enter the brackets.	`DECIMAL (``digits` `[ ,` `precision` `])`< /td>
{ }	Braces enclose two or more items, one of which is required. Do not enter the braces.	`{ENABLE \| DISABLE}`
\|	A vertical bar represents a choice of two or more options within brackets or brac es. Enter one of the options. Do not enter the vertical bar.	`{ENABLE \| DISABLE}` `[COMPRESS \| NOCOMPRESS]`
`...`	Horizontal ellipsis points indicate either: That we have omitted parts of the code that are not directly related to the example That you can repeat a portion of the code	`CREATE TABLE ... AS` < em>`subquery;` `SELECT` `col1``,` `col2` `, ... ,` `coln` `FROM employees;`
. . .	Vertical ellipsis poin ts indicate that we have omitted several lines of code not directly related to the example.
Bold	Bold typeface indicates terms that are defined in the text or terms that appear in a glossary , or both.	When you specify this clause, you create an index-organized table< /strong>.
`UPPERCASE monospace (fixed-w idth font)`	Uppercase monospace typeface indicates elements supplied by the sys tem.	You can back up the database by using the `BACKUP` command. Use t he `DBMS_STATS`.`GENERATE_STATS` procedure.
`lowercase monospace (fixed-width font)`	Lowerca se monospace typeface indicates executables, filenames, directory names, and sample user-supplied elements.	Enter `sqlplus` to open SQL*Plus. Back up the datafiles and control files in the `/disk1/o racle/dbs` directory. The `department_id`, `department_name`, and `location_id` columns are in the `hr.departments` table.
`lowercase monospace (fixed-width font) italic`	Lowercas e monospace italic font represents placeholders or variables.	You can specify the `parallel_clause`. Run `U``old_release``.SQL` where `old_rel ease` refers to the release you installed prior to upgrading.
`MixedCase monospace (fixed-width font)`	Mixed-case monospace typeface indicates a Data Guard broker database property. The mixed case helps you visually differentiate a Da ta Guard broker property from other system-supplied elements, which are always shown in uppercase typeface. Mixed-case monospace typeface can also indicate other programmatic elements. Enter these elements as shown.	The `StandbyFileManagement` property corresponds to the `STANDBY_FILE_MANAGEMENT` initialization paramet er. The `JRepUtil` class implements these methods.