1.PURPOSE AND SCOPE
Oracle Data Guard broker software install with oracle database software and program bin file could find at $ORACLE_HOME/bin/dgmgrl location. Benefit of dgmgrl is most of the actions on primary/standby database can be done easyly through this tool, especilly switchover and managing primary/standby database.
When you are using the Broker to maintain your Data Guard configuration you must use either the Broker command line interface ‘DGMGRL’ or Grid Control to make any changes to your Data Guard configuration. If you desire to use SQL*Plus then you should remove the the Data Guard Broker configuration using the ‘REMOVE CONFIGURATION PRESERVE DESTINATIONS’ command in DGMGRL. Then you must set the DG_BROKER_START parameter to ‘FALSE’ on all database in the configuration.