DNFS: Direct NFS: local ip address shows as blank when starting database remotely in OL7.

(Doc ID 2313471.1)

Last updated on OCTOBER 03, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

When ever the database instance is started remotely or locally using TNS alias, the local ip address of DNFS channel is blank/empty. Local IP address is showing as expected when database is started locally using “sqlplus / as sysdba”.

Applications connected to this database timeout when the database instance started remotely or locally using TNS alias and no timeout issue when the same database is started locally using “sqlplus / as sysdba”. This issue did not surface when customer was using OL6 / RHEL 6 and only observed in OL7 / RHEL 7.

Here are the environment details:

oranfstab is configured under /etc as below.

cat /etc/oranfstab
server xx.aa.bb.cc
local:xx.aa.bb.dd
path:xx.aa.bb.cc
nfs_version: nfsv4

Starting database locally using TNS alias or remotely shows local IP address as blank:
------------------------------------------------------------------------------------------------
Fri Apr 28 11:46:58 2017
Oracle instance running with ODM: Oracle Direct NFS ODM Library Version 4.0
.....
Fri Apr 28 11:47:02 2017
Direct NFS: channel id [0] path [xx.aa.bb.cc] to filer [xx.aa.bb.cc] via local [] is UP <<<------ local IP address is blank HERE

Starting same database locally using "sqlplus / as sysdba" shows correct configured local IP address:
-----------------------------------------------------------------------------------------------------------------
Fri Apr 28 11:41:13 2017
Oracle instance running with ODM: Oracle Direct NFS ODM Library Version 4.0
........
Fri Apr 28 11:41:20 2017
Direct NFS: channel id [0] path [xx.aa.bb.cc] to filer [xx.aa.bb.cc] via local [xx.aa.bb.dd] is UP <<<------ local IP address is populated correctly as xx.aa.bb.dd HERE



Changes

Database instance was started through remote connection or using TNS alias.

Cause

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