This is an useful script taken from: http://dbaforums.org/oracle/index.php?showtopic=16834 which provides a list of the currently
open sessions.
To track if you application is having problems releasing connection you can open the SQLPlusW and run this script
a couple of times while you exercise your application.
set line 150;
ttitle "dbname Database|UNIX/Oracle Sessions";
set heading off;
select 'Sessions on database '||substr(name,1,8) from v$database;
set heading on;
select
substr(a.spid,1,9) pid,
substr(b.sid,1,5) sid,
substr(b.serial#,1,5) ser#,
substr(b.machine,1,20) computer,
substr(b.username,1,10) username,
-- b.server,
substr(b.osuser,1,8) os_user,
substr(b.program,1,30) program
from v$session b, v$process a
where
b.paddr = a.addr
and type='USER'
order by spid;
ttitle off;
spool off;
This will provide an output like:
