Re: 12G Desupport for Raw Devices

From: Greg Rahn <>
Date: Mon, 11 Aug 2008 01:04:33 -0700
Message-ID: <>

To quote the notice: "This means customers can no longer keep their datafiles, OCR or Voting disks on raw devices in Oracle 12g." What this means that the Oracle database will not support any file on a raw device *directly*. There will have to be a layer between the raw device and the database (ASM, filesystem, etc).

I think this is a good, forward looking desupport notice. Given the pace that I have seen the significant number of customers adopt new releases for existing production systems, it will be probably be 8 years before 12G is widely common. I base that number on the fact that 10g came out in 2004, and many large shops are just upgrading to 10gR2 in 2008, 4 years later. Since 11g was released second half of 2007, add 4 years for 11gR2 (or whatever R release) to be main stream and another 4 years for 12gR? to be main stream. By my estimate we re talking 2015+/- time frame. Now obviously green field installs will follow a faster adoption rate, but that is also the case today.

On Fri, Aug 8, 2008 at 8:55 AM, Bobak, Mark <> wrote:
> And I forgot the second part of my, as people move from RAW to ASM, they're still going to use RAW volumes to allocate storage to ASM, right? Seems to me it would be pretty silly to put filesystems on all your storage, just so you can hand it over to ASM.
> So, seems to me, Oracle will still deal w/ raw, albeit perhaps only through the ASM path....?

Greg Rahn
Received on Mon Aug 11 2008 - 03:04:33 CDT

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