oracle造成系统CPU过高的检查sql

Posted 2020-10-08 Frankiee

1、 根据占用CPU高的进程号来查询这个进程执行的SQL语句：

CPU过高的进程号：

#首先找到CPU过高的进程号
# top -bn1 是静态找到占用最高的进程
[[email protected] ~]# top -bn1 | awk ‘{print $1}‘ | grep -A2 PID

 

SQL语句：

SELECT sql_text
FROM V$sqltext a
WHERE (a.hash_value, a.address)
IN (SELECT DECODE(sql_hash_value, 0 , prev_hash_value, sql_hash_value),
DECODE(sql_hash_value, 0 ,prev_sql_addr, sql_address)
FROM v$session b
WHERE b.paddr = (SELECT addr FROM v$process c WHERE c.spid = ‘&pid‘))
ORDER BY piece ASC;

#######
ex:
SELECT sql_text 
FROM v$sqltext a 
WHERE (a.hash_value, a.address) 
IN (SELECT DECODE(sql_hash_value, 0, prev_hash_value, sql_hash_value), 
DECODE(sql_hash_value, 0, prev_sql_addr, sql_address) 
FROM v$session b 
WHERE b.paddr = (SELECT addr FROM v$process c WHERE c.spid = ‘31968‘)) 
ORDER BY piece ASC;