ORA-16456
        switchover to standby in progress or completed
        
        
        Cause
        The requested operation was not allowed because a switchover to standby operation was either in progress or had completed.
        Action
        Issue the SHUTDOWN ABORT command on the database after switchover operation completes.
        
     
    
    
        ORA-16456
        switchover to standby in progress or completed
        
        
        Cause
        The requested operation was not allowed because a switchover to standby operation was either in progress or had completed.
        Action
        Issue the SHUTDOWN ABORT command on the database after switchover operation completes.
        
     
    
    
        ORA-16456
        switchover to standby in progress or completed
        
        
        Cause
        The requested operation was not allowed because a switchover to standby operation was either in progress or had completed.
        Action
        Issue the SHUTDOWN ABORT command on the database after switchover operation completes.