Requirements As usual, Oracle needs a lot of resources, with a minumum for the server of 512 MBytes of Ram and 1024 MBytes of Swap and 1.5 Gbytes of free disk space. This requirements are checked by the install package. As the amount of swap isn't the default value for a fresh install, be aware of that. A workaround for that is described in http://www.oracle.com/technology/tech/linux/install/xe-on