Srinivas,
That's because the values are in 2 different rows.
Notice that your query returns 2 rows. One row
will have the 'db block gets', the other will have
the 'physical reads'.
This will do it:
select a.value/b.value
from v$sysstat a, v$sysstat b
where a.name = 'physical reads'
and b.name = 'db block gets';
Jared
On Saturday 04 August 2001 09:20, Tatireddy, Shrinivas (MED, Keane) wrote:
> hi lists
>
> can anybody help me for the flwng :
>
> i need to do calculation dividing phy reads value/db block gets
>
> i am following the principle
>
> select decode(name,'physical reads',value)/decode(name,'db block
> gets',value)
> from v$sysstat
> where name in ('db block gets','physical reads')
>
> just this query is returning notthing.
>
> i tried with to_number function also, that is not also returning
> anything.
>
> is there any trick to solve this.
>
> srinivas
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