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Oracle: NFS mounted filesystem for rman backup

ORA-27054

Cannot backup dump file to nfs filesystem. After tested more options, I found that we just change the version from 3 to 2.

Example:

mount -o cio,rw,bg,hard,nointr,rsize=32768,wsize=32768,proto=tcp,noac,vers=2,timeo=600 nfsserver:/share /share

For new environment. Just mount with a little option. This working fine.

mount -o rsize=32768,wsize=32768 172.18.1.231:/backup /backup