select substrB(sample_time ,1,13),count(1)
from dba_hist_active_sess_history se, dba_hist_sqltext sq
where se.sample_time >=
to_date('2024-03-15 00:00:00', 'YYYY-MM-DD HH24:MI:SS')
and se.sample_time
to_date('2024-03-18 08:00:00', 'YYYY-MM-DD HH24:MI:SS')
and SESSION_ID=1981
group by substrB(sample_time ,1,13)
order by 1;
