querying for the number of unique logins??

Could someone tell me if there's a table that tracks the number of unique database logins? what is the best way to find this information out?

thanks for any help. Carl

Check in V$SESSION. You can get all logins and their processes being executed.

Try this:

select username,osuser,server,status,count(*)
from v$session
where username is not null
and username not in ('sys','system') and status = 'ACTIVE'
group by username,osuser,server,status;

When you say "Unique Database Logins", what do you mean? How many users are created? How many users are logged in right now? How many users have EVER logged in?