So you include /usr/local/oracle/backup and then for this client you exclude it. Why would you specify to backup /usr/local/oracle/backup anyway? You only need to back that up on your admin server and that should be in its own dataset really.
You don't need to backup /usr/local/oracle/backup on your client, that's just the OSB installation, which you can easily put back just be reinstalling the product. It's just the admin server that has important data in here.