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EM 12c, 13c: OMS Installation Fails with Error: "weblogic.nodemanager.NMConnectException: Connection refused. Could not connect to NodeManager" When the Server's Domain Name Starts with a Digit (Doc ID 2135328.1)

Last updated on OCTOBER 18, 2022

Applies to:

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


Installing the Enterprise Manager (EM) 12c or 13c Cloud Control OMS on a host fails during the OMSCA with the error:

Failed at 62% during the installation, seeing error FINE: weblogic.nodemanager.NMConnectException: Connection refused. Could not connect to NodeManager. Check that it is running at host.domain.0rg:7403

INFO: setup of EM failed. Check the trace file: $OMS_HOME/cfgtoollogs/omsca/omsca_20160209151334.log

From the .../Middleware/oms/cfgtoollogs/omsca/omsca_<timestamp>.log file:

Caused by: 60165: Invalid domain label.
60165: The right most domain label can never start with a digit.
60165: Correct the domain label

The adminserver fails to start. Checking the .../gc_inst/user_projects/domains/GCDomain/servers/EMGC_ADMINSERVER/logs/EMGC_ADMINSERVER.out:

<Feb 9, 2016 4:45:24 PM EST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to STARTING>
<Feb 9, 2016 4:45:24 PM EST> <Info> <WorkManager> <BEA-002900> <Initializing self-tuning thread pool>
<Feb 9, 2016 4:45:25 PM EST> <Critical> <WebLogicServer> <BEA-000386> <Server subsystem failed. Reason: java.lang.NullPointerException
at java.util.Hashtable.put(
at java.util.Properties.setProperty(


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