Frequent Critical & Fatal EM Events for OEM Agent – Troubleshooting Advice Needed

Subject: EM Event: Critical: <hostname>:3872 - Agent has stopped monitoring. The following errors are reported : Read timed out.

Hello,

For the past two weeks, I’ve been investigating an issue where my Oracle Enterprise Manager (OEM) Agents generate Critical and Fatal EM Events for Agent and Partner Agent Monitoring on two hosts. This occurs daily and results in a brief unavailability of the Agent in the OEM Console. However, from the server-side, everything appears to be running normally—including the Database targets—and there are no known issues with server hardware or OS components.

To diagnose the issue, I checked several parameters on the affected hosts at the time of the event. Below are relevant outputs from the