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OMS to Agent Communication Fails but the Agent is Able to Upload Successfully to the OMS in Multi-OMS Setup (Doc ID 2120206.1)

Last updated on JUNE 18, 2021

Applies to:

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


This scenario is specific to Multi-OMS setup
Third Party certificates are imported to each OMS in the setup.Agents are secured and uploading successfully to OMS.But communication from OMS to Agent is failing.Error below is reported on Agent Home page.

Communication between the Oracle Management Service to the Agent is unavailable. Any functions or displayed information requiring this communication link will be unavailable. For example: deleting/configuring targets, uploading metric data, or displaying Agent home page information such as Agent to Management Service Response Time (ms).

Error below is reported in emoms.trc

Caused by: oracle.sysman.emSDK.agent.comm.exception.VerifyConnectionException: unable to connect to http server at https://hostname.domainname:3872/emd/main/. [peer not authenticated]
at oracle.sysman.gcagent.comm.http.ClientConnection.verifySecureConnection(
at oracle.sysman.gcagent.comm.http.ClientConnection.makeConnection(


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