http://docs.oracle.com/cd/E18283_01/appdev.112/e11830/sdo_locator.htm

 

“The installation of Locator depends on the successful and proper installation of Oracle Multimedia. Oracle Multimedia is installed and configured with Oracle Database 11g, although you can install Oracle Multimedia manually if necessary, as documented in Oracle Multimedia User's Guide. During the installation of Oracle Multimedia, Locator is installed.“