Home > Database > Mysql Tutorial > 查看Oracle CPU情况

查看Oracle CPU情况

WBOY
Release: 2016-06-07 16:55:58
Original
1114 people have browsed it

--发现那些SQL运行了大量的PARSE select sql_text, parse_calls, executions from v$sqlarea order by parse_calls desc;

 --发现那些SQL运行了大量的PARSE

  select sql_text, parse_calls, executions from v$sqlarea order by parse_calls desc;

  --SYS的总的PARSE情况

  select name, value from v$sysstat where name like 'parse count%';

  --CPU空间及繁忙情况

  select * from v$osstat;

  --查看每个Session的CPU利用情况:

  select ss.sid,se.command,ss.value CPU ,se.username,se.program

  from v$sesstat ss, v$session se

  where ss.statistic# in

  (select statistic#

  from v$statname

  where name = 'CPU used by this session')

  and se.sid=ss.sid

  and ss.sid>6 order by CPU desc;

  --比较一下哪个session的CPU使用时间最多,,然后查看该Session的具体情况:

  select s.sid, s.event, s.MACHINE,s.OSUSER,s.wait_time, w.seq#, q.sql_text

  from v$session_wait w, v$session s, v$process p, v$sqlarea q

  where s.paddr=p.addr and

  s.sid=&p and

  s.sql_address=q.address;

  ---占用CPU最高的10个Session及其SQL语句

  select s.sid,w.wait_time,w.seconds_in_wait,w.state,w.wait_time_micro,w.time_remaining_micro,w.time_since_last_wait_micro,p.USERNAME,

  status,server,schemaname,osuser,machine,p.terminal,p.program,logon_time,w.event,w.wait_class,tracefile,sql_text,last_active_time

  from v$session_wait w, v$session s, v$process p, v$sqlarea q

  where s.paddr=p.addr and

  s.sid

  in

  ( select sid from

  (

  select ss.sid

  from v$sesstat ss, v$session se

  where ss.statistic# in

  (

  select statistic# from v$statname

  where name = 'CPU used by this session'

  )

  and se.sid=ss.sid and ss.sid>6 order by ss.value desc

  )where rownum

  )

  and s.sql_address=q.address;

linux

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template