mkdir /dba

Add the following lines to the /etc/exports file.

/dba *(rw,sync,no_wdelay,insecure_locks,no_root_squash)

Run the following command to export the NFS shares.
chkconfig nfs on
service nfs restart
Log into another server and mount the the NFS share:

Add the following lines to the /etc/fstab file:
nfs_server:/dba /home/oracle nfs rw,bg,hard,nointr,tcp,vers=3,timeo=300,rsize=32768,wsize=32768,actimeo=0 0 0

chown -R oracle:oinstall /home/oracle