Hi DBA's,
We are running Oracle 805 on NT in ARCHIVELOG MODE.
I run the following script to list CPU usage by thread:
column program format a50
column username format a12
spool C:\WINNT\Profiles\aweatherburnedb\Desktop\DBA\NT_CPU_usage.out
select p.spid thread, s.username,
decode(nvl(p.background,0),1,bg.description,
s.program) program, ss.value/100 CPU,physical_reads disk_io
from v$process p,
v$session s,
v$sesstat ss,
v$sess_io si,
v$bgprocess bg
where s.paddr=p.addr
and ss.sid=s.sid
and ss.statistic#=12
and si.sid=s.sid
and bg.paddr(+)=p.addr
order by ss.value desc;
spool off
This is the report:
THREAD USERNAME PROGRAM
CPU DISK_IO
--------- ------------ --------------------------------------------------
--------- ---------
000C8 CASTILOL D:\orant\BIN\RWRBE60.exe
112.42 132277
001AC CASTILOW ORACLE80.EXE (P000)
67.23 0
001C0 PEREZM D:\orant\BIN\RWRBE60.exe
60.11 120613
001C2 CASTILOW ORACLE80.EXE (P001)
55.95 0
001DF CASTILOW ORACLE80.EXE (P002)
33.4 5
00175 CASTILOW ORACLE80.EXE (P003)
30.1 5
001E2 MKENZIEL C:\WINNT\Profiles\All Users\Desktop\sigtas.lnk
27.77 257276
000DC CASTILOW C:\WINNT\Profiles\castillowm\Desktop\Sigtas Belize
12.69 40611
Sorry about the formatting.
Nevertheless, what I'm trying to get a handle on is the CPU column.
Notice the first row, thread 000C8 is using 112.42 ? of CPU.
Looking at the SQL statement v$sesstat provides VALUE which are numbers from
0 to 438532196. This value is divided by 100 to get the CPU value.
I still don't know what the number in "v$sesstat VALUE" represents?
Also from which table is the value for Disk_IO (Physical Reads) retrieved?
Thanks in advance for your time.
Denmark Weatherburne
"Knowledge is power, but it is only useful if it is shared!"
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