OMS to Agent Communication Fails but the Agent is Able to Upload Successfully to the OMS (Doc ID 1580282.1)

Last updated on SEPTEMBER 18, 2017

Applies to:

Enterprise Manager Base Platform - Version 10.2.0.5 to 12.1.0.5.0 [Release 10.2 to 12.1]
Information in this document applies to any platform.

Symptoms

Third party custom SSL certificate was imported into an Agent on remote machine by following the steps in

<Note: 1593183.1>: Steps to Import Third Party Trusted SSL Certificate into 12c Cloud Control Agent URL

For pre-12c Agents

<Note: 1357140.1>: Steps to Import Third Party Trusted SSL Certificate into the 10g / 11g Grid Agent URL

-  Agent was able to startup fine with the new certificate and the new certificate can be seen when the Agent URL is accessed from a browser.
-  However, submitting any job against a database monitored by this Agent fails and the Agent homepage in the Console shows

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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).
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-  But the Agent is marked as UP and the metrics under 'Resource Utilization' have values as well. The 'Upload Metric Data' button is however disabled.

-  There is no proxy server configured between the OMS and Agent machines, hence the below document does not apply:
<Note 395717.1>: Communication: OMS to Agent Communication Fails With 'Cannot Establish Proxy Connection' Due to Proxy-Related Settings

-  Hostname and IP resolution of the Agent machine is working fine from the OMS host and also the Agent port is open for communication.

-  The emoms.trc shows:

2013-07-25 09:47:25,400 [EMUI_09_47_24_/console/admin/rep/emdConfig/emdTargetsMain$target=agentmachine.domain_3A3872$type=oracle*_emd$ctxType=All_20Targets] ERROR emdConfig.EmdConfigTargetsData storeUploadManagerStatus.1604 - java.io.IOException: javax.net.ssl.SSLPeerUnverifiedException: peer not authenticated

-  The emagent.trc shows:

2013-07-25 02:01:12,131 Thread-4572 ERROR ssl: nzos_Handshake failed, ret=28860
2013-07-25 02:01:12,162 Thread-4572 ERROR http: 2692: Error initializing SSL connection for incoming request, aborting request. ret=-10

Cause

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