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

Last updated on APRIL 26, 2018

Applies to:

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


The AS Guard 'discover topology' command

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 "" and port "7891"
ASG_DUF-3030: Error, cannot resolve host name
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(
at oracle.duf.DufNode.getIPAddr(
at oracle.duf.dufias.DufIasWorker$Simple.getInstanceInfoFromOID(
at oracle.duf.dufias.DufIasWorker$Simple.discoverTopology(



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