Oracle standby database recovery stopped
You then have the option of either starting a managed recovery operation or opening the database for read-only access.

Start the database:

SQL&gt; STARTUP NOMOUNT;


Mount the standby database:

SQL&gt; ALTER DATABASE MOUNT STANDBY DATABASE;


Start the managed recovery operation:

SQL&gt; ALTER DATABASE RECOVER MANAGED STANDBY DATABASE 
  2&gt; DISCONNECT FROM SESSION;