cancel media recovery

Hai all,

In note id , 232240.1 - Performing Switchover in a Data Guard Configuration



Convert the physical standby to the new primary:


If you are on verion 9.0.1 then you should first cancel managed recovery prior
to issuing the above command. If you are on 9.2.0 and have started managed
recovery with the "through all switchover" clause then you should also cancel
managed recovery before issuing the above command.


also cancel
managed recovery before issuing the above command.>>>>>>>>

How can I cancel this ?


Kai