dataguard broker
Connected as SYSDBA.
DGMGRL> switchover to dgrd1
Performing switchover NOW, please wait...
Operation requires a connection to database "dgrd1"
Connecting ...
Connected to "dgrd1"
Connected as SYSDBA.
New primary database "dgrd1" is opening...
Operation requires start up of instance "dgrd2" on database "dgrd2"
Starting instance "dgrd2"...
Connected to an idle instance.
Connected to an idle instance.
Connected to an idle instance.
Connected to an idle instance.
Connected to an idle instance.
Connected to an idle instance.
Connected to an idle instance.
Connected to an idle instance.
Database mounted.
Switchover succeeded, new primary is "dgrd1"
the standby db ...dgrd2 does not mount