RMAN-05146
        must be connected to standby database to issue RECOVER STANDBY DATABASE
        
        
        Cause
        An attempt was made to recover a standby database from a non-standby database.
        Action
        Connect to the standby database and reissue the command.
        
     
    
    
        RMAN-05146
        must be connected to standby database to issue RECOVER STANDBY DATABASE
        
        
        Cause
        An attempt was made to recover a standby database from a non-standby database.
        Action
        Connect to the standby database and reissue the command.
        
     
    
    
        RMAN-05146
        must be connected to standby database to issue RECOVER STANDBY DATABASE
        
        
        Cause
        An attempt was made to recover a standby database from a non-standby database.
        Action
        Connect to the standby database and reissue the command.