Direct NFS: FAQ
(Doc ID 954425.1)
Last updated on OCTOBER 30, 2019
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 to 22.214.171.124 [Release 11.1 to 12.1]
Oracle Database - Enterprise Edition - Version 126.96.36.199 to 188.8.131.52 [Release 12.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
The purpose of this article is to provide answers for the frequently asked questions about 11g new feature direct NFS.
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In this Document
|Questions and Answers|
|What is direct NFS?|
|When using direct NFS, is there still a need for an operating system nfs software required to mount the NFS filesystem?|
|How can the direct NFS usage be verified?|
|Why do we unable to see anything from v$dnfs% views?|
|When does Direct NFS mount the volumes?|
|Do DNFS volumes need to be mounted by Operating System (kernel NFS)?|
|What type of files can be accessed by direct NFS?|
|What is oradism? When is it used by Direct NFS?|
|Are NFS v4 and automount supported with dNFS (Direct NFS) in 11g?|
|What is the usage of Direct NFS channels?|
|"Direct NFS: NFS3ERR 2 No such file or directory. path 192.xxx.xxx.1 mntport 4046 nfsport 2049". What does this mean?|
|Are jumbo frames supported with Direct NFS?|
|Can multiple Direct NFS paths be configured in the same subnet?|
|"ORA-17500: ODM err:KGNFS READ FAIL:Permission denied" when using multiple paths with Direct NFS client. How do I fix it?|
|Why HCC queries return "ORA-64307: hybrid columnar compression is not supported for tablespaces on this storage type"?|
|Are there any issues with enabling Direct NFS for SAN deployments?|
|Does Direct NFS + HCC support a community string other than "public" for SNMP?|
|We are using nested NFS mounts and have trouble accessing the files in the child NFS mount, why?|
|Files created using Direct NFS are not available via the OS for over a minute after being successfully created. What is the cause for this and is something wrong?|