My Oracle Support Banner

DNFS DB hangs after losing one path (Doc ID 2286174.1)

Last updated on FEBRUARY 03, 2019

Applies to:

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

Symptoms

RHEL7/OL7 With 12.1.0.2 DB, DNFS enabled

DNFS is using multiple paths configured in oranfstab. But it never marks the paths as “down” when they get physically disconnected, so the DB hangs[DML/DDL Operations] until the interface becomes available again.

"ifdown eth2" behaves in expected way, transactions continues through other available path.

oranfstab
===========
server: ZFS
path: 10.242.120.94
local: 10.242.221.184
path: 10.242.223.213
local: 10.242.222.241<<<<<<<<<<<
export: /export/fra/ora mount: /oradata/fra

 

No errors were seen from any of the logs. Also the same setup work in expected way in RHEL6/OL6

Changes

 Test failover scenario to confirm the high availability

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Symptoms
Changes
Cause
Solution
References


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.