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ORA-27054 Tips

Oracle Database Tips by Donald Burleson

Question: I'm getting the following error when I attempt to issue the mount command on an NFS filesystem:

ORA-27054: NFS file system where the file is created or resides is not mounted with correct options

What is the ORA-27054 error about?

Answer: The oerr utility shows this for the ORA-27054:

ORA-27054: NFS file system where the file is created or resides is not mounted with correct options

Cause: The file was on an NFS partition and either reading the mount tab file failed or the partition was not mounted with the correct mount option.

Action: Make sure mount tab file has read access for Oracle user and the NFS partition where the file resides is mounted correctly. For the list of mount options to use refer to your platform specific documentation. 

The ORA-27054 error is different between the older Oracle export utility (exp and the data pump export (expdp).   

When using exp, you must create the file, whereas in data pump expdp Oracle will create the file on your behalf.  


Start by checking your NFS file mount options for Oracle, and verify permissions, hard, rsize, wsize, and noac parms in your NFS mount command:

mount -o rw,timeo=600,hard,wsize=32768,vers=3,rsize=32768,tcp

mount -o hard,rw,noac,rsize=32768,wsize=32768,suid,proto=tcp,vers=3

For more details, see Jon Emmons book "Oracle Shell Scripting" for Linux & UNIX.


If you like Oracle tuning, see the book "Oracle Tuning: The Definitive Reference", with 950 pages of tuning tips and scripts. 

You can buy it direct from the publisher for 30%-off and get instant access to the code depot of Oracle tuning scripts.



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