NLS_ISO_CURRENCY

Parameter type	String
Syntax	NLS_ISO_CURRENCY = territory
Default value	Derived from NLS_TERRITORY
Parameter class	Dynamic : ALTER SESSION
Range of values	Any valid NLS_TERRITORY value

NLS_ISO_CURRENCY specifies the string to use as the international currency symbol for the C number format element.

Local currency symbols can be ambiguous. For example, a dollar sign ($) can refer to U.S. dollars or Australian dollars. ISO Specification 4217 1987-07-15 defines unique "international" currency symbols for the currencies of specific territories or countries.