FND User Login Summary

select distinct
trunc(fl.start_time,'month') month,
count(distinct fl.user_id) over (partition by trunc(fl.start_time,'month')) user_count
from
fnd_logins fl
where
1=1
order by
month desc

select distinct trunc(fl.start_time,'month') month, count(distinct fl.user_id) over (partition by trunc(fl.start_time,'month')) user_count from fnd_logins fl where 1=1 order by month desc