RE: So how big is your buffer cache ?
- From: "Ruth Gramolini" <rgramolini@xxxxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 31 Aug 2004 08:20:57 -0400
She thought they said trains and the duhveloper missed his. Ruth
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Nuno Souto
Sent: Tuesday, August 31, 2004 7:19 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: Re: So how big is your buffer cache ?
How does "executed 3000000 times a day" strike you then?
Just got one.... and had to explain why it was not a good idea
to write a batch Java process as a loop of:
objtype objvar = new objtype(PK);
and let the constructor method do the same SQL for every row!
Sometimes I wonder if God ran out of brains when He
was making the Java developer....
Cheers
Nuno Souto
nsouto@xxxxxxxxxxxxxx
----- Original Message -----
From: "Cary Millsap" <cary.millsap@xxxxxxxxxx>
> bad SELECT statement can have the same effect. A SQL statement that =
> reads
> 10,000x as many PIO blocks as it needs, executed thousands of times per =
> day,
> results in a much busier I/O subsystem than you need. A busy I/O =
> subsystem
> makes it more difficult for DBWR to keep up, and this causes 'free =
> buffer
> waits' waits.
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