Subject:	Receiving error Ora-27054 When Running Rman With NFS
	:	424785.1

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Cause

Improper NFS mount options are used. This behaviour has been observed on Solaris Linux and AIX Platforms.

ORA-27054 ERRORS WHEN RUNNING RMAN WITH NFS

Solution

Workarounds:

*.event='10298 trace name context forever, level 32'

- Use the event 10298 (It can have a side effect of disabling direct IO on RAC using regular files on NFS mounts)

Reference : ORA-27054 ERRORS WHEN RUNNING RMAN WITH NFS

OR

Apply patch for

OR

- Set the mount options explictly.

Here are the mount options that need to be used for nfs volumes on Linux.

Use : rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,vers=3,timeo=600,actimeo=0 default rsize and wsize for NFS is 4096 Blocks so if you have rsize=32k and wsize=32k then NFS would be able to read and write large datagram as compared to deafult one TCP option will make sure that your client are getting the data or not Hard & INTR - The program accessing a file on a NFS mounted file system will hang when the server crashes. The process cannot be interrupted or killed unless you also specify intr. When the NFS server is back online the program will continue undisturbed from where it was. actimeo is for access timeout and it should be 0

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