How can I query and retrieve like that?

Question

Hi all!
When I read the tuning document of company, I found that some retrieved information about storages and machine. Because this forum does not allow to post message with attach file, so I demonstrate like that:
Disk Device Disk Utilization (%) Disk Reads (per second) Disk Writes (per second) ...
C: 0.02 0.0024 1.46
Where and how can I retrieve this record? What dynamic view do I retrieve?
Thanks any way

Answer 1

SQL> r
1 select substr(NAME,1,4),
2 sum(PHYRDS) "Physical Reads",
3 sum(round((PHYRDS / PD.PHYS_READS)*100,2)) "Read %",
4 sum(PHYWRTS) "Physical Writes",
5 sum(round(PHYWRTS * 100 / PD.PHYS_WRTS,2)) "Write %",
6 sum(fs.PHYBLKRD+FS.PHYBLKWRT) "Total Block I/O's"
7 from (
8 select sum(PHYRDS) PHYS_READS,
9 sum(PHYWRTS) PHYS_WRTS
10 from v$filestat
11 ) pd,
12 v$datafile df,
13 v$filestat fs
14 where df.FILE# = fs.FILE#
15* group by substr(name,1,4)
SUBS Physical Reads Read % Physical Writes Write % Total Block I/O's
/u01 9424 99.29 11093 94.17 33569
/u02 0 0 7 .06 7
/u03 68 .72 680 5.77 939