Select A.*, 'N' Save_Flag from A

Select row_id from A where row_id = ref_cursor.row_id for update

procedure Update_Proc(p_record in out my_table) is
begin
     for v_ct in 1 .. p_record.count loop
     
          if p_record(v_ct).save_flag = 'Y' then

               update A
               set x = p_record(v_ct).x
               where y = p_record(v_ct).y;

          end if;               

     end loop;

end;