NFS issue on Red Hat Enterprise Linux with Netapp storage

(Doc ID 550164.1)

Last updated on MARCH 27, 2013

Applies to:

Oracle Database - Enterprise Edition - Version 8.1.5.0 to 10.2.0.4 [Release 8.1.5 to 10.2]
Linux OS - Version 2.6.9 to 2.6.18-128.1.10.0.1
Linux x86
Linux x86-64
***Checked for relevance on 15-Nov-2010***
***Checked for relevance on 27-Mar-2013***
Linux Kernel - Version: 2.6.9 to 2.6.18-128.1.10.0.1


Symptoms

There may be situations where, despite the use of proper mount options (ORA-27054), NFS does not appear to work as expected. The purpose of this article is to help troubleshoot such NFS issues on Linux.

If you take a system call trace e.g. /usr/bin/strace of a failing/hanging process that accesses an NFS file, you may see something similar to the following:

 

...
fcntl(15, F_SETLK, {type=F_WRLCK, whence=SEEK_SET, start=0, len=0} <unfinished ...>

Cause

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