![](https://csdnimg.cn/release/download_crawler_static/87037973/bg5.jpg)
Allows a user to add conditions for which a fast-start failover
should be performed
Exits the Data Guard command-line interface.
Performs a database failover operation in which the standby
database, to which DGMGRL is currently connected, fails
over to the role of primary database.
Quits the Data Guard command-line interface.
Reinstates the database after a failover
Removes the broker configuration including all of its database
profiles from the broker configuration file
Removes the specified standby database profile from the
broker configuration.
Removes knowledge of an instance from an existing database
profile in the broker configuration.
Displays information about the broker configuration
Displays information about the specified database.
Displays all fast-start failover related information.
SHOW CONFIGURATION
SHOW DATABASE
SHOW FAST_START
FAILOVER
Starts an Oracle instance with the same options as SQL*Plus,
including mounting and opening a database
Stops the observer
Performs a switchover operation in which the current primary
database becomes a standby database, and the specified
standby database becomes the primary database.
alter system set dg_broker_start=TRUE;
alter system set db_domain='mafei.com' scope=spfile;