NFS Mount Issue ORA-27054

Error/Issue:

Database unable to use/create file on NFS mount point faild with following Error:
ORA-27054: NFS file system where the file is created or resides is not mounted with correct options
Additional information: 5
Tue Oct 02 11:20:42 2012
WARNING: NFS file system /oracle_mnt not mounted with correct options
WARNING:Expected NFS mount options: rsize>=32768,wsize>=32768,hard,
WARNING: NFS file system /oracle_mnt not mounted with correct options
WARNING:Expected NFS mount options: rsize>=32768,wsize>=32768,hard,
WARNING: NFS file system /oracle_mnt not mounted with correct options
WARNING:Expected NFS mount options: rsize>=32768,wsize>=32768,hard,
ORA-205 signalled during: ALTER DATABASE   MOUNT...

Problem: 

In the above case , NFS was mounted with default rsize and wsize option and oracle doesn't like any NFS mount write/read size values (wsize) less than 32k.

AIX  /etc/filesystems etntry :

/oracle_mnt:

        dev = /DBA

        mount = true

        vfs = nfs

        nodename = server_name or IP

        options = rw,sort

        type = nfs_mount

which is clearly written to alert.log file with Warning message. 

Solution :

Mount the NFS with correct option , high lighted in the Warning message.  Entry updated to following fixed the problem.

/oracle_mnt:

        dev = /DBA

        mount = true

        vfs = nfs

        nodename = server_name or IP

        options = rw,hard,rsize=32768,wsize=32768

        type = nfs_mount

       

Oracle recommend options are 

rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,actimeo=0,vers=3,timeo=600

for details Pls refer to 

3.2.6 Checking NFS Mount and Buffer Size Parameters for Oracle Clusterware

Link http://docs.oracle.com/cd/E11882_01/install.112/e22489/storage.htm#CWLIN272