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July 11th, 2008 12:00
nfs server not responding
I auto mounted and NFS disk from the EMC NS 20 and loaded Oracle 9i. when the nfs share sits idle for a while it gets an NFS server not responding error which crashes oracle.
I heard there where some mount options that may solve this issue.
Has anyone seen this issue or have any mount option ideas?
Thank for you help
Eric
I heard there where some mount options that may solve this issue.
Has anyone seen this issue or have any mount option ideas?
Thank for you help
Eric
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MarkF4
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July 14th, 2008 14:00
Mark Foreman
Host Systems Forum Admin
nandas
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1.5K Posts
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July 14th, 2008 15:00
Welcome to EMC Support Forums. Hope you'll have some good time here with all of us.
For your issue - while mounting the NAS on the server, you may try using the option to use TCP as the protocol instead of UDP (UDP being the default).
Also, there may be another issue - where is the oracle lock file stored? It should not be on the NAS export - it must be on the local disk. I am not sure whether this is true with Oracle 9i as well - but you may check it out. I can provide you more details on this later.
Others may suggest or comments.
Thanks,
Sandip
Rainer_EMC
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July 25th, 2008 11:00
here are some general best practices:
dont use automounter - use static mount
dont use soft mounts - use hard,bg,intr instead
use NFS3/TCP with rsize and wisze set to 32768
Do you use RAC or non-RAC ?
This will make a difference wether forcedirectio and llock should be used
My best guess is that your specific problem was caused by automounter using soft mounts, which should NEVER be used with database applications (or any other app that cares about data consistency)