查找bad sql的方法:

 1  --查找bad sql的方法:
 2
 3   select * from (select buffer_gets, sql_text
 4
 5   from v$sqlarea
 6
 7   where buffer_gets >500000
 8
 9   order by buffer_gets desc) where rownum<=30;
10
11  -- 执行次数多的SQL
12
13   select sql_text,executions from
14
15   (select sql_text,executions from v$sqlarea order by executions desc)
16
17   where rownum<81;
18
19  -- 读硬盘多的SQL
20
21   select sql_text,disk_reads from
22
23   (select sql_text,disk_reads from v$sqlarea order by disk_reads desc)
24
25   where rownum<21;
26
27  -- 排序多的SQL
28
29   select sql_text,sorts from
30
31   (select sql_text,sorts from v$sqlarea order by sorts desc)
32
33   where rownum<21; 

同事写的，先放着

查找bad sql的方法: