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Can you give the steps to migrate agent from OEM 10g to OEM 11g?

Hi All,
Can somebody tell me the steps to migrate agent from OEM 10g to to OEM 11g? Or can you please point me to some documentation on how do it? I understand that once the agent is migrated, it load the host, listener and database instance.
2 Solutions
Tomas Helgi JohannssonCommented:

The preferred upgrade method is to use the Database Upgrade Assistant (DBUA) which gives you all prerequisites and necessary operations to do before the migration.

Here are some documentation to look at

     Tomas Helgi
DavidSenior Oracle Database AdministratorCommented:
I'm concerned about what you mean by "load the host.....".  The EM agent is simply a monitoring process.  A listener is down?  It reports the listener is not reachable.  Starting and stopping a listener is completely different, likewise for hosts (O/S), instances, and so on.

Conversely, upgrading or patching the Enterprise Manager or Grid Control on its host does not affect the Enterprise Agents on other hosts.

Hope this helps.
slightwv (䄆 Netminder) Commented:

You post makes no sense.  There is no mention in the question asked about how to upgrade a database so your comment and link do not apply.

The question is about how to install/upgrade a new OEM agent on another server.

>>Can somebody tell me the steps to migrate agent from OEM 10g to to OEM 11g?

Do you manually install the agents or use the Grid Control install to push them out?

If you manually install them, the agent should know what to do.  

Once you download the new version it should come with an installer.

Take a look at:

Management Agent Install Software: This software will install a new Management Agent on your host. This software can also be used to upgrade Management Agent from from one major release version to another. For example, you can upgrade the Management Agent 10g Release ( to 10g Release 4 (
Rao_SAuthor Commented:
Thank you slightwv,
This was exactly what I was looking for..( some documentation as my starting point ).
I will also be looking at all documentation we as a team might have access to.
I think we manually install the agent. Will update the question as I learn more.
Rao_SAuthor Commented:
Found that we have change the url in emd.properties and stop, clearstate, secure, and start, and upload the targets. After that in the OMS drop the instance, listener and rediscover them and resync the agent.
I will close this question.
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