EM 12c: Troubleshooting issues with Enterprise Manager 12c Cloud Control OMS to Agent communication due to SSL Handshake Failure
(Doc ID 2127696.1)
Last updated on JULY 28, 2022
Applies to:Enterprise Manager Base Platform - Version 188.8.131.52.0 and later
Information in this document applies to any platform.
Enterprise Manager (EM) 12c Cloud Control OMS and Agents are configured to run in secure mode (https) out-of-box. OMS communicates to Agent only after a successful SSL handshake between OMS and Agent.
When OMS attempts to connect to Agent, Agent provides its certificate chain(User/server certificate,Intermediate certificates if any and Root certificate) to OMS. OMS verifies if the Trusted certificates of Agent(Intermediate certificates if any and Root certificate) is present in the trust store of OMS which is <EM_INSTANCE_HOME>/sysman/config/b64LocalCertificate.txt file.
SSL handshake will be successful and OMS will be able to communicate to Agent, only if Trusted certificates of Agent(Intermediate certificates if any and Root certificate) is present in b64LocalCertificate.txt file.
When OMS fails to ping or connect to Agent due to SSL Handshake failure error below is reported on Agent Home page on EM Console.
This document provide steps to collect diagnostic data and solve the issue with OMS to Agent communication due to SSL Handshake failure.
Error below is reported in <EM_INSTANCE_HOME>/sysman/log/emoms.trc
at oracle.sysman.gcagent.comm.http.ClientConnection.makeConnection(ClientConnection.java:886) This document provide steps to collect diagnostic data and solve the issue with Agent to OMS communication due to SSL Handshake failure.
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