12c DNFS Database Long Timeout and Reports "Direct NFS: channel id [#] path [#] to filer is DOWN" (Doc ID 2011623.1)

Last updated on JULY 05, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 to 12.1.0.2 [Release 11.2 to 12.1]
Information in this document applies to any platform.

Symptoms

11.2/12c[12.1.0.2.1] DNFS Databases is reporting the following message:


7) There is a 5 minute wait, as shown above, before DNFS reconnects the mounts. Once it is reconnected, activity can resume. However, at the OS level, they only have about a 2-3 minute wait for the switchover of the pools to complete.  After that time, the local NFS mounts are available for reading/writing. But within the database, there is that exactly 5 minute wait.  Even SQL*Plus queries hang until the "Direct NFS: channel is up" message.

8) The problem is not present on databases using regular NFS.

Cause

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