To use languages other than the default (English), either for the database or for applications running on the database, you must use the Advanced Installation method.
Tip:
By default, Oracle Universal Installer (OUI) configures the character set of a new database based on the language of the operating system.See Also:
Oracle Database Globalization Support Guide for detailed information about character set and language support
Oracle Database Installation Guide for Microsoft Windows for information about running OUI in different languages