對于使用NFS來作為Oracle RAC的存儲方式最需要注意的兩點：
1.RAC所有節點都需要通過NFS的方式挂載到伺服器。
2.NFS Client的挂載參數需要符合一定的要求。
下面是一篇metalink文章，詳細讨論了NFS參數要求：
Mount Options for Oracle files when used with NFS on NAS devices (文檔 ID 359515.1)
修改時間:2013-12-31
類型:BULLETIN
In this Document
APPLIES TO:
Oracle Database - Enterprise Edition - Version 10.1.0.2 to 12.1.0.1 [Release 10.1 to 12.1]
Information in this document applies to any platform.
Oracle Clusterware, Oracle Real Application Clusters, NAS
PURPOSE
The options with which the NAS systems should be mounted are described. This note does not cover the new dNFS feature that was introduced in 11g.
SCOPE
This document is relevant to all environments using Oracle Clusterware & RAC.
DETAILS
RAC including RACone and single instance RAC
In the table below
Binaries is the shared mount points where the Oracle Home and CRS_HOME is installed.
Datafiles includes Online Logs, Controlfile and Datafiles
nfsvers and vers are identical on those OS platforms that has nfsvers. The ver option is an alternative to the nfsvers option. It is included for compatibility with other operating systems
Please note that the mount options on each of the following cells are applicable only to those type of files listed in the column heading.
For RMAN backup sets, image copies, and Data Pump dump files, the "NOAC" mount option should not be specified - that is because RMAN and Data Pump do not check this option and specifying this can adversely affect performance.
Operating System
Mount options forBinaries ##
Mount options for Oracle Datafiles
Mount options for CRS Voting Disk and OCR
Sun Solaris *
rw,bg,hard,nointr,rsize=32768,
wsize=32768,proto=tcp,noac,
vers=3,suid
rw,bg,hard,nointr,rsize=32768,
wsize=32768,proto=tcp,noac,
forcedirectio, vers=3
rw,bg,hard,nointr,rsize=32768,
wsize=32768,proto=tcp,vers=3,
noac,forcedirectio
AIX (5L) **
rw,bg,hard,nointr,rsize=32768,
wsize=32768,proto=tcp,
vers=3,timeo=600
cio,rw,bg,hard,nointr,rsize=32768,
wsize=32768,proto=tcp,noac,
vers=3,timeo=600
cio,rw,bg,hard,intr,rsize=32768,
wsize=32768,tcp,noac,
vers=3,timeo=600
HPUX 11.23 *** --
rw,bg,vers=3,proto=tcp,noac,
hard,nointr,timeo=600,
rsize=32768,wsize=32768,suid
rw,bg,vers=3,proto=tcp,noac,
forcedirectio,hard,nointr,timeo=600,
rsize=32768,wsize=32768
rw,bg,vers=3,proto=tcp,noac,
forcedirectio,hard,nointr,timeo=600
,rsize=32768,wsize=32768
Windows
Not Supported
Not Supported
Not Supported
Linux x86
#
****
rw,bg,hard,nointr,rsize=32768,
wsize=32768,tcp, vers=3,
timeo=600, actimeo=0
rw,bg,hard,nointr,rsize=32768,
wsize=32768,tcp,actimeo=0,
vers=3,timeo=600
rw,bg,hard,nointr,rsize=32768,
wsize=32768,tcp,noac,actimeo=0,
vers=3,timeo=600
Linux x86-64 #
****
rw,bg,hard,nointr,rsize=32768,
wsize=32768,tcp,vers=3,
timeo=600, actimeo=0
rw,bg,hard,nointr,rsize=32768,
wsize=32768,tcp,actimeo=0,
vers=3,timeo=600
rw,bg,hard,nointr,rsize=32768,
wsize=32768,tcp,noac,vers=3,
timeo=600,actimeo=0
Linux - Itanium
rw,bg,hard,nointr,rsize=32768,
wsize=32768,tcp,vers=3,
timeo=600, actimeo=0
rw,bg,hard,nointr,rsize=32768,
wsize=32768,tcp,actimeo=0,
vers=3,timeo=600
rw,bg,hard,nointr,rsize=32768,
wsize=32768,tcp,noac,vers=3,
timeo=600,actimeo=0
* NFS mount option “forcedirectio” is required on Solaris platforms when mounting the OCR/CRS files when using Oracle 10.1.0.4 or 10.2.0.2 or later (Oracle unpublished bug 4466428)
** AIX is only supported with NAS on AIX 5.3 TL04 and higher with Oracle 10.2.0.1 and later
*** NAS devices are only supported with HPUX 11.23 or higher ONLY
# These mount options are for Linux kernels 2.6 and above. For older kernels please check Note 279393.1
Due to Unpublished bug 5856342, it is necessary to use the following init.ora parameter when using NAS with all versions of RAC on Linux (x86 & X86-64 platforms) until 10.2.0.4. This bug is fixed and included in 10.2.0.4 patchset.
filesystemio_options = DIRECTIO
Single Instance (non-RAC)
Operating System
Mount options for Binaries
Mount options for Oracle Datafiles
Sun Solaris *
(8, 9, 10)
rw,bg,hard,rsize=32768,wsize=32768,vers=3,nointr,proto=tcp,suid
rw,bg,hard,rsize=32768,wsize=32768,vers=3,[forcedirectio or llock],nointr,proto=tcp
AIX (5L) **
rw,bg,hard,rsize=32768,wsize=32768,vers=3,intr,timeo=600,proto=tcp
rw,bg,hard,rsize=32768,wsize=32768,vers=3,cio,intr,timeo=600,proto=tcp
HPUX 11.23 ****
rw,bg,hard,rsize=32768,wsize=32768,vers=3,nointr,timeo=600,proto=tcp,suid
rw,bg,hard,rsize=32768,wsize=32768,vers=3,nointr,timeo=600,proto=tcp, forcedirectio
Windows
Not Supported
Not Supported
Linux x86
#
rw,bg,hard,rsize=32768,wsize=32768,vers=3,nointr,timeo=600,tcp
rw,bg,hard,rsize=32768,wsize=32768,vers=3,nointr,timeo=600,tcp
Linux x86-64 #
rw,bg,hard,rsize=32768,wsize=32768,vers=3,nointr,timeo=600,tcp
rw,bg,hard,rsize=32768,wsize=32768,vers=3,nointr,timeo=600,tcp
Linux - Itanium
rw,bg,hard,rsize=32768,wsize=32768,vers=3,nointr,timeo=600,tcp
rw,bg,hard,rsize=32768,wsize=32768,vers=3,nointr,timeo=600,tcp
See above (after the configuration for RAC) for the legends
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