OracleAS AS Guard "Discover Toplogy" Fails With ASG_DUF-3030: Error, cannot resolve host name (Doc ID 452506.1)

Last updated on NOVEMBER 04, 2016

Applies to:

Oracle Fusion Middleware High Availability - Version: 10.1.2.0.2 to 10.1.2.3.0 - Release: AS10gR2 to AS10gR2
Information in this document applies to any platform.
Oracle Fusion Middleware HA - FMW HA - Version: 10.1.2.0.2 to 10.1.2.3.0
"Checked for relevance on 17th-April-2009"

Symptoms

The AS Guard 'discover topology' command

$ORACLE_HOME/dsa/bin/asgctl.sh
ASGCTL>connect asg ias_admin/manager1
ASGCTL> discover topology oidpassword=manager1

fails with the following error stack

Getting the list of instances from OID
ASG_DUF-4950: An error occurred on host "dev-infra" with IP "111.22.33.4" and port "7891"
ASG_DUF-3030: Error, cannot resolve host name
myinstance.oracle.com.mymachine.oracle.com
ASG_IAS-15776: Error discovering the topology from OID


The error in the duf_server.log

... WST NOTIFICATION:1 Duf/LOCAL mymachine: oracle.duf.DufException
at oracle.duf.DufNode.loadIPAddr(DufNode.java:256)
at oracle.duf.DufNode.getIPAddr(DufNode.java:195)
at oracle.duf.dufias.DufIasWorker$Simple.getInstanceInfoFromOID(DufIasWorker.java:645)
at oracle.duf.dufias.DufIasWorker$Simple.discoverTopology(DufIasWorker.java:285)

Changes

Cause

Sign In with your My Oracle Support account

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

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms