RE: ASM Risk / Rewards
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Sat, 1 Sep 2007 18:58:12 +0200
Alex and others,
I was a lucky guy to meet with ASM for the first time 3 years ago on a non-RAC
environment on Windows2003 and I was surprised how it worked well. Although we
had only 3 mirrored disks the response time for single-block I/O was about 5ms
and there were about 400 users connected to the system. The I/O was really
evenly spread across all 3 disks.
I have another WORA installation - a 2-node RAC which is in production now for
more than one year. It is a Windows2003 + 10.2.0.1 standard edition + RAC + ASM
and a small storage array. I'm now administering that WORA installation more
than a year and we had a lot of funny problems on this RAC, but there were no
ASM related problems. I never had to do something on ASM level except
startup/shutdown and some manual archivelog purging. The disk I/O response
times are here normal as well.
So don't think I am a Windows fan. My personal belief is that Windows is good
only for my laptop. But my experience with ASM either on Windows or Unix/Linux
is very good so far.
Regards, Joze
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Alex Gorbachev
Sent: 1. september 2007 0:02
To: oracle-l
Subject: Re: ASM Risk / Rewards
Repost due to over-quoting...
Interesting. Thanks Niall.
Also thanks to Chris for his reply.
Has anyone else on the list used ASM on Windows?
On 8/31/07, Niall Litchfield <niall.litchfield@xxxxxxxxx> wrote:
> ASM is a requirement for SE RAC. Consequently any SE RAC customers on
> windows will be using ASM. When I was working for them the CPA applications
> for the Audit Commission (
> http://www.audit-commission.gov.uk/cpa/index.asp) were
> hosted on just such a RAC database, though that may have changed since.
>
> ASM worked just fine - this would have been 10.1.0.2 or 10.1.0.3 from memory
> - so even relatively early ASM was pretty good. I wouldn't personally have
> gone with ASM at that early stage if I'd had a choice, so take my comments
> above as an endorsement.
>
> As far as popularity of the platform goes, last I saw Windows users
> accounted for about 30-40% of Oracle's DBMS customers (by number not value).
> It wouldn't suprise me at all if windows+asm is rather more prevalent than
> (say) hpux+asm.
>
> cheers
>
> Niall
--
Alex Gorbachev, Oracle DBA Brewer, The Pythian Group
http://www.pythian.com/blogs/author/alex http://www.oracloid.com
BAAG party - www.BattleAgainstAnyGuess.com
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