ディスク競合を避けるためにdatafileの「I/O」問題をクエリする
クエリ方法1：
col File_Name format a40
select
df.name File_Name,
fs.phyrds Reads,
fs.phywrts Writes,
(fs.readtim/decode(fs.phyrds,0,-1,fs.phyrds)) Read_Time,
(fs.writetim/decode(fs.phywrts,0,-1,fs.phywrts)) Write_Time
from
v$datafile df,
v$filestat fs
where df.file#=fs.file#
order by df.name;
クエリ方法2:
col NAME for a50
select name,phyrds,phywrts,readtim,writetim
from v$filestat a,v$dbfile b
where a.file# = b.file#
order by readtim desc;