CPU used by oracle user

Question

Hi,
on 10 g R2, on Windows SEVER 2003
oracle user SCOTT connect from SQLPLUS and runs a large query. Is there any way to see how much CPU does he use ?
Thanks.

Answer 1

CPU used by a user(session wise)
select a.sid, a.username, a.osuser, c.name, b.value
from v$session a, v$sesstat b, v$statname c
where a.sid = b.sid
and b.statistic# = c.statistic#
and c.name like '%CPU%'
and a.username='SCOTT'
order by a.sid, c.name
Per user (session wise) following information:
1.cpu usages
2.memory sorts
3.table scan
4.commit
5.cursor
6.physical reads
7.logical reads
8.BCHR (buffer cache hit ratio)
select a.sid, a.username, a.osuser, c.name, b.value
from v$session a, v$sesstat b, v$statname c
where a.sid = b.sid
and b.statistic# = c.statistic#
and (c.name like '%CPU%' or c.name like '%sorts (memory)%' or c.name like '%table scan%' or c.name like '%commit%' or c.name like '%cursor%' or c.name like '%read%' or c.name like '%buffer%' or c.name like '%cache%')
and b.value > 0
order by a.sid, c.name
If you have the licences for the diagnostic pack and performance pack, you can look at the active session history for this type of information. You can query view DBA_HIST_ACTIVE_SESS_HISTORY, or run the ashrpt.sql script from $ORACLE_HOME/rdbms/admin, or use OEM for a graphic representation of the workload over time.
HTH
Girish Sharma
Edited by: Girish Sharma on Dec 8, 2009 5:23 PM
"and a.username='SCOTT'" added.