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EM 13C: EM Installed On OCI Showing Error "Communication between the Oracle Management Service to the Agent is unavailable. Any features or displayed information requiring this communication will be unavailable" For All Agent Home Page (Doc ID 2973516.1)

Last updated on SEPTEMBER 29, 2023

Applies to:

Enterprise Manager Base Platform - Version 13.4.0.0.0 and later
Information in this document applies to any platform.

Symptoms

Agent home page showing below error for all agents in Enterprise Manager cloud control installed on OCI

"Communication between the Oracle Management Service to the Agent is unavailable. Any features or displayed information requiring this communication will be unavailable"

<OMS_INST_HOME>/em/sysman/log/emoms.trc written below errors for all agent

2023-09-04 11:43:52,292 [SET_ADRHOME_PROPERTY] WARN emdiag.AdrMetricPropertySetter logp.251 - AdrMetricPropertySetter:run: TMCommException making remote TMClient calls
oracle.sysman.emSDK.agent.comm.exception.VerifyConnectionException: unable to connect to http server at https://<AGENT_HOSTNAME>:<PORT>/emd/main/. [handshake has no peer]
at oracle.sysman.gcagent.comm.http.ClientConnection.verifySecureConnection(ClientConnection.java:912) ~[emagentSDKImpl.jar:13.5.0.0.0]
at oracle.sysman.gcagent.comm.http.ClientConnection.makeConnection(ClientConnection.java:870) ~[emagentSDKImpl.jar:13.5.0.0.0]

Caused by: javax.net.ssl.SSLHandshakeException: handshake has no peer
at oracle.sysman.gcagent.comm.http.BaseHttpsContext.verifyConnection(BaseHttpsContext.java:138) ~[emagentSDKImpl.jar:13.5.0.0.0]
at oracle.sysman.gcagent.comm.http.BaseHttpsContext.verifyConnection(BaseHttpsContext.java:119) ~[emagentSDKImpl.jar:13.5.0.0.0]
at oracle.sysman.gcagent.comm.http.ClientConnection.verifySecureConnection(ClientConnection.java:895) ~[emagentSDKImpl.jar:13.5.0.0.0]
... 14 more
Caused by: javax.net.ssl.SSLPeerUnverifiedException: peer not authenticated
at sun.security.ssl.SSLSessionImpl.getPeerCertificates(SSLSessionImpl.java:574) ~[?:1.8.0_371]
at oracle.sysman.gcagent.comm.http.BaseHttpsContext.verifyConnection(BaseHttpsContext.java:178) ~[emagentSDKImpl.jar:13.5.0.0.0]
at oracle.sysman.gcagent.comm.http.BaseHttpsContext.verifyConnection(BaseHttpsContext.java:119) ~[emagentSDKImpl.jar:13.5.0.0.0]
at oracle.sysman.gcagent.comm.http.ClientConnection.verifySecureConnection(ClientConnection.java:895) ~[emagentSDKImpl.jar:13.5.0.0.0]

Cause

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In this Document
Symptoms
Cause
Solution
References


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