用以下查询得出结果为:-166172082099
select 1 - (phy.value / (cur.value + con.value))
from v$sysstat cur, v$sysstat con, v$sysstat phy
where cur.name='db block gets'
and con.name='consistent gets'
and phy.name='physical reads'; 真是不可思议!IO的读写为什么会这么大呢?高手看看!
select 1 - (phy.value / (cur.value + con.value))
from v$sysstat cur, v$sysstat con, v$sysstat phy
where cur.name='db block gets'
and con.name='consistent gets'
and phy.name='physical reads'; 真是不可思议!IO的读写为什么会这么大呢?高手看看!
db block gets:9567255
consistent gets:102882015
physical reads:18446744056579215580可能是什么原因呢?