High Level overview steps: 1. Root Management Server 2. Manual update of the Operations Manager database together with the included stored procedure file that is discussed later 3. Manual import of the Management Pack library that is discussed later 4. Secondary Management Servers 5. Gateway Servers 6. Deploy the agent update to the agents that used a discovery-based installation 7. Operations console role computers Note Select the Run Server Update option from the Software Update dialog box. 8....(read more)

Read the complete post at http://scug.be/blogs/scom/archive/2010/05/01/cumulative-update-2-for-opsmgr-installation.aspx