# File lib/dbd_ado/ADO.rb, line 138
  def finish
    # if DCL, DDL or INSERT UPDATE and DELETE, this gives an Error
    # because no Result-Set is available
    if @res_handle.Fields.Count() != 0 then
      @res_handle.Close()
    end
  rescue RuntimeError => err
    raise DBI::DatabaseError.new(err.message)
  end