利用存储过程实现oracle的分页查询

create or replace procedure search (p_min integer,p_max Integer,p_rowset out sys_refcursor)
   is
   begin    
      open p_rowset for
          select * from (select rownum r,table_name.* from  table_name where rownum <= p_max) t 
                    where t.r >= p_min;
  end search;