Today I was going to Install/configure Oracle 11gR2 RAC without using shared storage on Red Hat Enterprise Linux. I had read about that before but never tested so I tried and failed first time but after some re-configuration, I was able to configure clusterware and was able to store OCR Voting and database files on NFS mount points.
Step 1
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On First node e.g. RAC node1, create the following directory. You can use any directory as your NFS source mount point.
mkdir /u01/shared_config
chown -R oracle:oinstall /u01/shared_config
Step 2
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Add the following lines to the /etc/exports file.
vi /etc/exports
------------------------------------------------
/u01/shared_config *(rw,sync,no_wdelay,insecure_locks,no_root_squash)
Step 3
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Run the following command to export the NFS shares.
Check that the NFS server will get started during boot of this server.
chkconfig --level 345 nfs on
Now, start the NFS server process on the NFS server.
service nfs start
Check, if the directory is exported correctly by issuing the exportfs –v command:
/usr/sbin/exportfs -v
Step 4
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On both node1 and node2 create the directories in which the Oracle configuration files will be created.
mkdir /shared_config
chown -R oracle:oinstall /shared_config
chmod -R 775 /shared_config
Step 5
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Add the following lines to the "/etc/fstab" file.
---------------------------------------------------------------
racnode1:/u01/shared_config /shared_config nfs rw,bg,hard,nointr,tcp,vers=3,timeo=600,rsize=32768,wsize=32768,actimeo=0 0 0
Note: I used following Oracle recommended settings for nfs share and at the end my ocr and voting disks configuration process was failed:
racnode1:/u01/shared_config /shared_config nfs rw,bg,hard,intr,rsize=32768,wsize=32768,tcp,noac,vers=3,timeo=600 0 0
Step 6
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Mount the NFS shares on all servers.
mount /shared_config
Make sure the permissions on the shared directories are correct i.e oracle.
Check, if the NFS export is correctly mounted with the mount command.
# mount
It will give you output like this:
esidbapoc01:/sharedconfig on /shared_config type nfs (rw,bg,hard,nointr,tcp,nfsvers=3,timeo=600,rsize=32768,wsize=32768,actimeo=0,addr=192.168.1.3)
Hope this will help…………
