emctl start oms Failed With 'WebTier Could Not Be Started' and emctl.log File Reports '(node name or service name not known)' (Doc ID 1527765.1)

Last updated on AUGUST 10, 2017

Applies to:

Enterprise Manager Base Platform - Version 11.1.0.1 and later
Information in this document applies to any platform.

Symptoms

OMS fails to start with the following error:

$<OMS_HOME>/bin>./emctl start oms

Starting Oracle Management Server...
Starting WebTier...
WebTier Could Not Be Started
Error Occurred: WebTier Could Not Be Started
Please check /u02/grid/oms12cr2/gc_inst/em/EMGC_OMS1/sysman/log/emctl.log for error details

Attempting to start the webtier manually fails with:

$<gc_inst>/WebTierIH1/bin>./opmnctl start
getaddrinfo(omsmachine, 6701, 2) failed (node name or service name not known):
opmnctl start: failed.

Verifying the hostname resolution results in:

$ nslookup omsmachine.domain
;; connection timed out; no servers could be reached
$ nslookup 10.10.10.10
;; connection timed out; no servers could be reached

Cause

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