Re: ADDM advices Oracle's application logic

From: Helma <>
Date: Mon, 21 Jan 2008 23:12:20 -0800 (PST)
Message-ID: <>

On 20 jan, 11:47, Frank van Bortel <> wrote:
> Helma wrote:
> > BTW i use raid 0+1
> I have seen Compaq hardware RAID controllers that have less
> throughput that an old RLL controller. I'd concentrate on that.
> Comment of Compaq on that particular event was something along
> the line of "for that money, you do not expect a real RAID
> controller, do you?". Followed by the usual comment on which
> beautiful controllers were on sale, for a hefty price, of course.
> The company that hired me responded with a "get me a decent
> one now, or pick up every damn piece of Compaq tomorrow".
> Believe the hardware was a 360, but it could have been a 570.
> It was the basic model. The new RAID controller did make
> a difference!
> I explained earlier, I use LVM on top of two disks, which
> would qualify as a stripe set (RAID-0), then.
> --
> Regards,
> Frank van Bortel
> Top-posting in UseNet newsgroups is one way to shut me up

I'm looking now with the sdparm tool if there's something wrong with the IO setup. This tool isn't as intuitive as hdparm, but let's tinker with it.
Meanwhile, the filesystemIO_options was set to 'none', i put it on setall, although i didn't test the result, as the main problem seems to be OS related.

 (alter system set filesystemIO_options =setall scope=spfile )

ps controller here is a p400 , i'm told i should be 'very fast'. Received on Tue Jan 22 2008 - 01:12:20 CST

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