修改Oracle游标数及排查游标问题相关SQL

查看当前游标数
show parameter open_cursors;
修改游标最大数
alter system set open_cursors=1000;
commit;
查看游标消费情况
select o.sid, osuser, machine, count(*) num_curs
      from v$open_cursor o, v$session s
      where user_name = 'COSS' and o.sid=s.sid
      group by o.sid, osuser, machine
    order by   num_curs desc;
查看消费游标的具体SQL    
select q.sql_text
      from v$open_cursor o, v$sql q
      where q.hash_value=o.hash_value and o.sid = 683;    

参考链接：

　　http://blog.csdn.net/kai27ks/article/details/7633482