This was a cryptic error and after research, we found the solution in the following My Oracle Support:
Note: 271598.1
Grid Agent Configuration: Certain Operations from Grid Console Fail With 'ERROR: NMO Not Setuid-root (Unix-only)'
So, I performed the following steps to resolve the issue with Oracle 11g Grid Control:
./emctl stop agent
Oracle Enterprise Manager 11g Release 1 Grid Control 11.1.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
Stopping agent ... stopped.
Open a new shell window logged in as the root user:
# cd /home/oracle/agent11g/
# ./root.sh
As the oracle user, start the agent on the monitored host:
$ ./emctl start agent
Oracle Enterprise Manager 11g Release 1 Grid Control 11.1.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
Starting agent ....... started.
Now comes the secret sauce or step that solves issue:
./emctl control agent runcollection rac1:host host_storage
Oracle Enterprise Manager 11g Release 1 Grid Control 11.1.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
EMD runCollection completed successfully
In the above command emctl control agent runcollection hostname:host host_storage
you will update the details sent to the OEM 11g Grid Control server.
Perform upload to OEM 11g Grid Control Server:
$ ./emctl upload
Oracle Enterprise Manager 11g Release 1 Grid Control 11.1.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
EMD upload completed successfully
Verify it has resolved issue. You will see the current host status as shown in the below example:
Stay tuned for more Oracle 11g Grid control tips. I will share my lessons learned next for the installation process with Oracle 11gR1 Grid Control Server.
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