Oracle: V$NLS_PARAMETERS

select
  lower(parameter) parameter_name
-- value
from
  v$nls_parameters order by 1;
--
-- nls_calendar
-- nls_characterset
-- nls_comp
-- nls_currency
-- nls_date_format
-- nls_date_language
-- nls_dual_currency
-- nls_iso_currency
-- nls_language
-- nls_length_semantics
-- nls_nchar_characterset
-- nls_nchar_conv_excp
-- nls_numeric_characters
-- nls_sort
-- nls_territory
-- nls_time_format
-- nls_timestamp_format
-- nls_timestamp_tz_format
-- nls_time_tz_format