Re: NFS

On Jan 25, 4:25 pm, joel garry <joel-ga..._at_home.com> wrote:
> On Jan 25, 6:42 am, sybrandb <sybra..._at_gmail.com> wrote:
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>
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> > On Jan 25, 11:10 am, madunix <madu..._at_gmail.com> wrote:
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> > > Hi all
>
> > > Trying to do RMAN from catalog database Dell Linux server RHEL to our
> > > production Data base data registered on catalog
> > > During RMAN remote backup  on the NFS server Linux ,  the NFS files
> > > system get disconnected and it cause the DB on the Production
> > > got DB restart the NFS get disconnect.... any help would be
> > > appreciated how should i mount the NFS file options
>
> > > NFS Server: RHEL5 64bit
> > > NFS Client : AIX5L 5.3
> > > DB: Oracle 10g  10.0.2.3
>
> > > I am using the following nfs options on the AIX box
> > > [root_at_aix_prod1]#mount -o
> > > rw,bg,intr,hard,timeo=600,wsize=32768,rsize=32768,vers=3,proto=tcp
> > > 10.5.1.33:/u01/rman /nfs
>
> > > on the Linux server the NFS export look as follow
> > > [root_at_linux3 ~]# cat /etc/exports
> > > #/etc/exports
> > > #/data/files           *(ro,sync)
> > > #/u01/test              *(rw,no_root_squash,insecure)
> > > /u01/rman              *(rw,no_root_squash,insecure)
> > > #/data/test            *.my- site.com(rw,sync)
>
> > Where did you read Oracle currently does support NFS outside the
> > context of a SAN?
>
> See metalink Note:236826.1 and Note:279069.1 .  For linux, it appears
> that they can simply require certain NFS options and point the finger
> at the OS vendor.  Which begs the question about their own offering.
> Not being on linux it's all academic to me.
>

I was wrong and Sybrand is right. The confusion arises in that the NFS must be an explicitly supported NAS with specific mount options. Kevin Closson clarifies it in
http://kevinclosson.wordpress.com/2008/02/08/my-blog-posts-prove-oracle-doesnt-support-nfs/ .

Though I think his decoder ring "(Some Stupid Little Linux/Unix Server Exporting Filesystems via NFS) != NAS" should really be "(Some Stupid Little Linux/Unix Server Exporting Filesystems via NFS) != NFS." The Oracle docs may be a bit misleading when they have section titles like "Using Network Attached Storage or NFS File Systems" - looks like they didn't mean to use the dictionary conjunction alternative (or logical disjunction) there. Maybe it should be "Using NFS File Systems on Network Attached Storage." Or maybe they couldn't decide if one could do it or not, then someone said a definitive no.

jg

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