Export: Release 10.2.0.1.0 - 64bit Production on Thursday, 17 October, 2013 5:30:01
Copyright (c) 2003, 2005, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
ORA-39000: bad dump file specification
ORA-31641: unable to create dump file "/db_backup/zzzdx_XXX.dmp"
ORA-27054: NFS file system where the file is created or resides is not mounted with correct options
Additional information: 3
Text: 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 wass not mounted with the correct
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
*** Important: The notes below are for experienced users - See Note:22080.1
As of Oracle 10.2 the IO interface layer in Oracle tries
to check that the mount options of any NFS mounted disk
used have mount options which ensure that the NFS volume
is safe to use as incorrectly mounted NFS volumes can
result in data corruption problems.
The exact checks used for an NFS mounted disk vary between
platforms but in general the basic checks will include
- The mount table (eg; /etc/mnttab) can be read to
check the mount options
- That the NFS mount is mounted with the "hard" option
- The mount options include rsize>=32768 and wsize>=32768
- For RAC environments, where NFS disks are supported,
that the "noac" mount option is used.
Different platforms may use different or additional checks.
Note that the main checks currently check the mount options
used and not the underlying NFS attributes (as seen from
nfsstat -m on most Unix platforms) and so a disk may appear
to be mounted correctly with nfsstat (-m) but Oracle may
report ORA-27054 errors if the required options were not
explicitly stated at mount time.
If reporting an ORA-27054 error the additional information
in the error message and the platform. and Oracle version
are all required to help confirm the exact reason for failing
to treat the NFS disk as correctly mounted.
# nmount /db_backup
# mount -t nfs -o rw,hard,nointr,tcp,noac,vers=3,timeo=600,rsize=32768,wsize=32768 188.8.131.52:/databak /db_backup
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