EM 12c : Enterprise Manager 12c Cloud Control emctl pingOMS fails 'Received Key Mismatch from OMS' (Doc ID 1996344.1)

Last updated on JUNE 01, 2023

Applies to:

Symptoms

Enterprise Manager (EM) 12.1.0.3 Cloud Control

<Agent base directory>/agent_inst/bin/emctl pingOMS
            fails with following error
            Oracle Enterprise Manager Cloud Control 12c Release 3
            Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
            ---------------------------------------------------------------
            EMD pingOMS error: Received Key Mismatch from OMS

OR
<Agent base directory>/agent_inst/bin/emctl pingOMS

fails with following error

Oracle Enterprise Manager Cloud Control 12c Release 2
Copyright (c) 1996, 2012 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
EMD pingOMS error: Failure connecting to https://<OMS HOSTNAME>.<DOMAINNAME>:4899/empbs/upload/ , err Connection establishment timed out

OR

<Agent base directory>/agent_inst/sysman/log/gcagent.log reports the following ping error

2014-10-14 15:18:52,948 [122:9FC136A7] WARN - Ping communication error
o.s.emSDK.agent.comm.exception.ConnectException [Failure connecting to https://<OMS HOSTNAME>.<DOMAINNAME>:4903/empbs/upload , err Connection establishment timed out]
java.io.InterruptedIOException [Connection establishment timed out]

OR

Connectivity from agent to OMS shows 100% ICMP ping packet loss

$ ping oms.oracle.com
PING <OMS_HOST> (<OMS IP>) 56(84) bytes of data.
..
--- <OMS_HOST> ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2819ms

OR

OMS upload url testing using wget fails

$ wget https://<OMS HOSTNAME>.<DOMAINNAME>:4903/empbs/upload --no-check-certificate

--2014-10-15 13:16:17--  https://<OMS HOSTNAME>.<DOMAINNAME>:4903/empbs/upload
Resolving <OMS HOSTNAME>.<DOMAINNAME>... <OMS IP>
Connecting to <OMS HOSTNAME>.<DOMAINNAME>|<OMS IP>|:4903... failed: Connection time
Retrying.
--2014-10-15 13:17:21--  (try: 2)  https://<OMS HOSTNAME>.<DOMAINNAME>:4903/empbs/uploa
Connecting to <OMS HOSTNAME>.<DOMAINNAME>|<OMS IP>|:4903... failed: Connection timed out.
Retrying.

Cause

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