RE: rman/NFS over internet, performance

From: Robertson Lee - lerobe <>
Date: Tue, 21 Oct 2008 13:20:39 +0100
Message-ID: <>


We had very similar issues to those that you mentioned and used the following nfs mount options. Performance picked up immediately


I think it was the noac that was killing it.


-----Original Message-----

[] On Behalf Of Bjoern Rost Sent: 21 October 2008 12:52
Subject: rman/NFS over internet, performance


I am trying to backup through an NFS mount to a disk located in a different datacenter between some solaris boxes. This works, but I am not satisfied with speed/performance. Using ftp, i can transfer data at more than 30mbit/s, while NFS peaks at only 16Mbit/s

I already use compressed backupsets. There doesn't seem to be a whole lot to tune in nfs client settings as oracle requires tcp, vers=3 and noac anyway.
I tried to use more (and less) parallel channels but that didn't help much either.

Any more ideas?



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-- Received on Tue Oct 21 2008 - 07:20:39 CDT

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