NetApp: Using 'nolock' NFS Mount Option with non-RAC Systems Results in Database Corruption (Doc ID 430920.1)

Last updated on MARCH 28, 2017

Applies to:

Linux OS - Version 2.4.9 to 2.6.18-128
Linux x86
Linux x86-64
Linux Itanium
***Checked for relevance on 29-MAr-2013***
***Checked for relevance on 15-Nov-2010***
Linux Kernel - Version: 2.4.9 to 2.6.18-128.EL5


Symptoms

You are using NFS for datafile storage, without Real Application Clusters (RAC), and the mount point with the datafiles is using the 'nolock' NFS mount option.  Then 2 nodes accidentally open the same database.  Here are some symptoms you might see:

1) Database detects the other node, and fails during mount:

and you used the nolock NFS mount option to workaround the errors.

Cause

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