String 

NLS_DUAL_CURRENCY = currency_symbol 

Dynamic. Scope = ALTER SESSION. 

Derived from NLS_TERRITORY 

Any valid format name up to 10 characters 

NLS_DUAL_CURRENCY specifies the dual currency symbol (such as "Euro") for the territory. The default is the dual currency symbol defined in the territory of your current language environment.

See Also: Oracle8i National Language Support Guide for more information on setting this parameter.