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Grid Control Agent 10g or 11g: Steps to Diagnose Issues Related to "Agent Unreachable" Status (Doc ID 271126.1)

Last updated on SEPTEMBER 27, 2022

Applies to:

Enterprise Manager Base Platform - Version 10.1.0.2 to 11.1.0.1 [Release 10.1 to 11.1]
Information in this document applies to any platform.
Enterprise Manager Grid Control - Version: 10.1.0.2 to 10.2.0.5 - Release: 10.1 to 10.2

Purpose

This document provides steps to diagnose issues where the Agent target is shown with "Agent Unreachable" status in its homepage.
- In a 10.1 Grid Console, the Agent homepage can be accessed from Management System -> Agents -> click on the Agent name.
- In a 10.2 Grid console, the Agent homepage can be accessed from the Setup -> Agents -> click on the Agent name.


The Agent homepage may also show an error such as:

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


Targets monitored by this Agent will also have a status: Agent Unreachable instead of the actual status of the target.

Additional references:
<Note 1084777.1>: Description of Important Communication Components in a 10g Enterprise Manager Grid Control Agent
<Note 1097545.1>: Description of Important Java Threads in a 10g Grid Control Oracle Management Service (OMS)

Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 Background
 Troubleshooting Steps:
References

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