The screen capture oui_mgmt_options_page.gif shows the Select Database Management Option page, which is one of the screens that displays in the Oracle Universal Installer when you are installing Oracle Database 10g. The screen contains options for managing the database with Grid Control or with Database Control.
If you select Grid Control, a drop-down menu provides a mechanism for selecting an existing Management Agent on the database host.
If you select Database Control, you can also enable email notifications so you will be contacted when Enterprise Manager alerts are triggered.