SQL > select * from V$NLS_PARAMETERS
parameter value
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
…. ….
NLS_CHARACTERSET US7ASCII
NLS_SORT BINARY
NLS_NCHAR_CHARACTERSET US7ASCII
SQL > select * from V$NLS_PARAMETERS
parameter value
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
…. ….
NLS_CHARACTERSET US7ASCII
NLS_SORT BINARY
NLS_NCHAR_CHARACTERSET US7ASCII