oracle session parameters
GRANT SELECT_CATALOG_ROLE TO my_user; -- to read V$PARAMETER
SELECT NAME, VALUE, DESCRIPTION FROM V$PARAMETER
--WHERE upper(NAME) = 'NLS_DATE_FORMAT'
ORDER BY NAME;
ALTER SESSION SET
NLS_LANGUAGE='AMERICAN'
NLS_TERRITORY='AMERICA'
NLS_CALENDAR='GREGORIAN'
NLS_DATE_FORMAT='DD/MM/YYYY HH24:MI:SS';