Preface

This document provides information about Oracle Data Guard broker, 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 network 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 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/

Accessibility of Code Examples in Documentation

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.

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 control. Oracle neither evaluates nor makes any representations regarding the accessibility of these Web sites.

Organization

This document contains:

Chapter 1, " Oracle Data Guard Broker Concepts"

This chapter introduces Oracle Data Guard broker concepts and terminology.

Chapter 2, " Managing Broker Configurations"

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 databases. It also describes states, status, and properties of databases.

Chapter 4, " Role Management"

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.

Chapter 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 Interface Reference"

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

Chapter 8, " Database Properties"

This chapter provides reference information about database properties.

Chapter 9, " Troubleshooting Data Guard"

This chapter provides troubleshooting information for Data Guard.

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

This appendix provides information about changed and deprecated features.

Glossary

Conventions

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

Convention	Meaning	Example
[ ]	Brackets enclose one or more optional items. Do not enter the brackets.	`DECIMAL (``digits` `[ ,` `precision` `])`
{ }	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 braces. 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` `subquery``;` `SELECT` `col1``,` `col2``, ... ,` `coln` `FROM employees;`
. . .	Vertical ellipsis points 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.
`UPPERCASE monospace (fixed-width font)`	Uppercase monospace typeface indicates elements supplied by the system.	You can back up the database by using the `BACKUP` command. Use the `DBMS_STATS`.`GENERATE_STATS` procedure.
`lowercase monospace (fixed-width font)`	Lowercase 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/oracle/dbs` directory. The `department_id`, `department_name`, and `location_id` columns are in the `hr.departments` table.
`lowercase monospace (fixed-width font) italic`	Lowercase monospace italic font represents placeholders or variables.	You can specify the `parallel_clause`. Run `U``old_release``.SQL` where `old_release` 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 Data 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 parameter. The `JRepUtil` class implements these methods.