See the Oracle VM Installation and Upgrade Guide for information on upgrading between Oracle VM 3.x releases.

You can upgrade Oracle VM between 3.x Releases only; for example, upgrading from Oracle VM Release 3.2.1 to 3.3.1. You cannot upgrade from a Release 2.x to a Release 3.x, however. In this case, you must reinstall Oracle VM Servers and Oracle VM Manager.

Upgrading versions of Oracle VM Manager that are using an Oracle XE database as a back end repository is not supported in this release, as the Oracle XE database is no longer supported under Oracle VM. If you are currently running an Oracle XE database for an existing installation of Oracle VM Manager, you must migrate the Oracle XE database to Oracle SE or Oracle EE before performing an upgrade to Release 3.3.