ORA-00044: timed_statistics must be TRUE when statistics_level is not BASIC

column name  format a16
column value format a7

select p.name, p.value
from v$parameter p
where p.name in ( 'statistics_level', 'timed_statistics' );
--
-- NAME             VALUE  
-- ---------------- -------
-- timed_statistics TRUE   
-- statistics_level TYPICAL

alter session set timed_statistics = false;
--
-- ORA-02097: parameter cannot be modified because specified value is invalid
-- ORA-00044: timed_statistics must be TRUE when statistics_level is not BASIC