Predefined Parameters

This section describes the predefined parameters added to RDS for PostgreSQL Enhanced Edition on the basis of PostgreSQL 11 open-source edition.

**Table 1** Predefined parameters
Predefined Parameter	Description
NLS_DATE_FORMAT	Defines the date format.
NLS_DATE_LANGUAGE	Defines the date language.
NLS_DUAL_CURRENCY	Defines the local currency symbols for the currencies of specific territories or countries.
NLS_CURRENCY	Defines the currency symbol.
NLS_TIME_FORMAT	Defines the time format without the time zone.
NLS_TIME_TZ_FORMAT	Defines the time format without the time zone.
NLS_TIMESTAMP_FORMAT	Defines the timestamp format without the time zone.
NLS_TIMESTAMP_TZ_FORMAT	Defines the timestamp format with the time zone.
NLS_NUMERIC_CHARACTERS	Defines the characters used as group separator and decimal character.
NLS_ISO_CURRENCY	Defines the ISO currency symbols for the currencies of specific territories or countries.
NLS_TERRITORY	Resets the values of NLS_CURRENCY, NLS_ISO_CURRENCY, and NLS_NUMERIC_CHARACTERS based on the regional currency and displayed number format.
NLS_LANGUAGE	Defines the default language of the database.
NLS_LENGTH_SEMANTICS	Defines the default length semantics of character strings. The value is BYTE or CHAR.
NLS_SORT	Defines the collating sequence for local characters.
NLS_COMP	Defines the collation behavior of database sessions.