VM Manager on virtual machine - best practice

I am setting up a server using Oracle VM to limit the number of cpus available to a virtual machine which will be running an Oracle database.
I have set up a test environment, one Oracle VM Server, and the Oracle VM Manager running on a separate server.
I have read in this forum that I could create a linux virtual machine on the VM Server, and then install the Oracle VM Manager on that.
Re: Oracle VM Manager installation
To create the linux virtual machine, I used the Oracle VM Manager that I have running on a separate server.
Once I created the linux virtual machine, I installed Oracle VM Manager on it.
From this point, I hoped to create the virtual machine upon which I will run the Oracle database, but I get the following message:
OVM-2008 The Server Pool Master (10.36.64.225) has been registered with some other pool, and can not register it again.
So if running the Oracle VM Manager on a virtual machine on the Oracle VM Server is a good idea, how do I do it?
Many thanks.
Paul

Hi Tommy,
Thanks for taking the time to reply to my query.
Unfortunately, things didn't go so well.
I ran the commands you listed, checking on the status of each VM manager (the original one, running on separate physical linux server, and the one I want to use, running as a VM guest) between each command:
/opt/ovs-agent-latest/db/db_del.py master
- this provided no response, and logout/login from both VM managers showed no changes.
/opt/ovs-agent-latest/db/db_del.py srv
10.36.64.225 removed.
- the oraVMmanager now listed as powered off in the original VM manager.
/opt/ovs-agent-latest/db/db_del.py srvp
10.36.64.225 removed.
- no change in VM Managers
/opt/ovs-agent-latest/db/db_del.py vm
/OVS/running_pool/28_oraVMmanager removed.
- no change to both VM Managers and the guest VM is still running.
/sbin/service ovs-agent restart
option 2 - guest VM shutdown (28_oraVMmanager)
I couldn't get the guest VM to restart
service xendomains start failed saying there is a lockfile:
/var/lock/subsys/xendomains
I haven't been able to get past this point other than to re-install and start again.
Maybe there is another way to do this...
If I install the VM Server, can I create a linux VM Guest using command line rather than from the VM Manager?
Once I have a VM guest, I can logon to that, and install the VM Manager.
Cheers
paul

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