ORA-16442
        an ALTER SYSTEM FLUSH REDO TO STANDBY succeeded, but some redo has not been applied
        
        
        Cause
        The target standby database did not apply all received redo.
        Action
        Allow the target standby database to apply all redo and then reissue the ALTER SYSTEM FLUSH REDO TO STANDBY statement.
        
     
    
    
        ORA-16442
        ALTER SYSTEM FLUSH REDO TO STANDBY succeeded, but some redo has not been applied.
        
        
        Cause
        The target standby database did not apply all received redo.
        Action
        Allow the target standby database to apply all redo and then reissue the ALTER SYSTEM FLUSH REDO TO STANDBY statement.
        
     
    
    
        ORA-16442
        ALTER SYSTEM FLUSH REDO TO STANDBY succeeded, but some redo has not been applied.
        
        
        Cause
        The target standby database did not apply all received redo.
        Action
        Allow the target standby database to apply all redo and then reissue the ALTER SYSTEM FLUSH REDO TO STANDBY statement.