This image shows a flowchart that represents the selections you can make within the Oracle Universal Installer when you install 10g Release 2 (10.1.2). According to the flowchart, Oracle Universal Installer displays the Welcome page, and then the Specify File Locations page, which allows you to enter a directory location for the new 10g Release 2 (10.1.2) Oracle home.

Next, Oracle Universal Installer displays the Select a Product to Install page. Use this page to select Oracle Application Server Infrastructure.

Next, Oracle Universal Installer displays the Select Installation Type page. Use this page to select the installation type you want to upgrade. To upgrade a 10g (9.0.4) Metadata Repository Only installation, select OracleAS Metadata Repository. To upgrade a Release 2 (9.0.2) or 10g (9.0.4) colocated Infrastructure, select Identity Management and Oracle Metadata Repository.

No matter which of these installation types you select, Oracle Universal Installer will install a new 10g Release 2 (10.1.2) Oracle home and upgrade your existing database to a supported version.