Check open cursors on database

Check current open cursor in database:

select max(a.value) as highest_open_cur, p.value as max_open_cur

from gv$sesstat a, gv$statname b, gv$parameter p

where a.statistic# = b.statistic#

and b.name = 'opened cursors current'

and p.name = 'open_cursors'

group by p.value;

Opened cursor by session:

select a.value, s.username, s.sid, s.serial#

from v$sesstat a, v$statname b, v$session s

where a.statistic# = b.statistic#

and s.sid = a.sid

and b.name = 'opened cursors current'

and s.username is not null;