NLS_LANGUAGE

Parameter type:	String
Syntax:	NLS_LANGUAGE = language
Parameter class:	Dynamic. Scope = ALTER SESSION.
Default value:	Operating system dependent, derived from the NLS_LANG environment variable
Range of values:	Any valid language name
NLS_LANGUAGE specifies the default language of the database. This language is used for messages, day and month names, symbols for AD, BC, AM, and PM, and the default sorting mechanism. This parameter also determines the default values of the parameters NLS_DATE_LANGUAGE and NLS_SORT. See Also: Oracle8i National Language Support Guide for a complete list of languages and additional information on this parameter. Your operating system specific Oracle documentation and the release notes for your country.