URGENT: 99% CPU Utilization - different oracle process

Question

Hi,
I have application using the database. It is 24*7 production env.
The CPU Utilization goes very high and application is working very slow.
I have enterprise manager on windows 2003 server and agents on linux to monitor it.
Oracle 10g is the database version.
Everytime i try to find out the process it goes down but generally the application is running very slow
Following is the result of sar on linux box which is taking up high CPU.
Linux 2.6.9-22.ELsmp (sydora2.sabrepacific.com.au) 03/12/07
10:17:43 CPU %user %nice %system %iowait %idle
10:17:48 all 93.69 0.00 3.34 2.98 0.00
10:17:53 all 69.85 0.00 3.82 26.32 0.00
10:17:58 all 88.61 0.00 2.80 8.59 0.00
10:18:03 all 96.90 0.00 2.57 0.53 0.00
10:18:08 all 95.13 0.00 3.29 1.58 0.00
Average: all 87.30 0.00 3.22 9.48 0.00
Let me know how to drill and fix this problem.
Please help !!
Thanks in advance.

Answer 1

High CPU is not a problem by itself, but you need to identify if it is consistently if so why.
SELECT a.*,b.*
from
v$session b,
v$process a
where
b.paddr = a.addr
and a.spid = <number> ;
spid is your server PID.
Identify your pid with top command, feed the pid to identify which session is using considerable CPU. Identify the sql that it is running.
SELECT * FROM V$sql where sql_id= <prev_sql_id from v$session>
Message was edited by:
gopalora