Re: datafiles on NFS?
- From: "Niall Litchfield" <niall.litchfield@xxxxxxxxx>
- To: patrick.elliott@xxxxxxxxxxxxx
- Date: Tue, 11 Mar 2008 15:52:14 +0000
Oh yes and here in all it's glory along with my comments on Kevin's blog is
the reply I got from support when I was looking at this - make of it what
you will
UPDATE
======
Hi Niall,
It's true, there is no list of OSCP anymore (web pages have been removed),
but if NFS on Linux is
used, this will be Ok with us for supporting issues (Note: 236826.1).
So I did get a useful link in the end, the highlights of the note being the
support statement I wanted
"The current support includes ext2, ext3 and NFS-based storage systems (e.g.
NetApp). To be acceptable for database usage, the file system must support
certain minimum functions such as write acknowledgement, write-through cache
and file permissions. Counter examples are simple NFS, which lacks
acknowledge and VFAT, which lacks file permissions."
and this note full of eastern promise, as the Fry's Turkish Delight adverts
used to say, for Linux filesystem support
"Your choice of which [filesystem] to use then becomes based on
supportability, reliability, security and performance. Oracle generally does
not certify file systems and does certify operating systems, but Linux is a
specific case. On different Linux distributions, Oracle might choose to have
certifications on different filesystems. When a problem is encontered, if a
non-supported filesystem is being used for Oracle data, control and redo log
files, Oracle will try to reproduce the problem on a supported and certified
filesystem. If the problem does not reproduce on a certified filesystem, the
specific filesystem / O/S vendor should be engaged for resolution."
In short run it by support. That said a dodgy SAN doesn't inspire confidence
either.
--
Niall Litchfield
Oracle DBA
http://www.orawin.info
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