RE: Partition LUNs for Oracle ASM

From: Walker, Jed S <>
Date: Mon, 28 Jan 2013 15:28:15 +0000
Message-ID: <>

Thank you everyone for the input. It seems that I can run with or without a partition; however, for performance reasons it is best to partition the disk or LUN and then use it for performance reasons. Also, it is best to leave the disk owned by root and make the partition owned by the appropriate user (e.g. grid, oracle, etc.) I'm going to do a bit more reading on alignment now as I've heard different opinions on that.

-----Original Message-----
From: Fm [] Sent: Saturday, January 26, 2013 10:53 AM To: Walker, Jed S
Subject: Re: Partition LUNs for Oracle ASM

Oracle does clearly say to create a single partition on a disk and use it. One of the replies did list same reference I have. There is situation, though, where you may loose your entire DG. If one adds DISK100 first & later a second adds DISK100p1. To prevent that, keep former disk owned by root & 2nd by grid. Furthermore, make sure your ASM string only shows *p1.

Thank you.

On Jan 25, 2013, at 11:36 AM, "Walker, Jed S" <> wrote:

> We get LUNs from various storage devices for building our RACs. They
> guy who taught me how to set things up said to partition the LUNs so I've always done that with fdisk; however, recently someone else built a RAC and and said he did not partition the LUNs. So, Do I only need to partition if the storage is actual raw disks, but not when it is a LUN from a storage unit?
> Thanks,
> Jed
> FYI - This system is RH6.2 for Oracle RAC.
> --

Received on Mon Jan 28 2013 - 16:28:15 CET

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