Sessions going on Increasing in the DB

Question

Hi All,
In our environment we are using weblogic on which CRM Application is deployed.
Initial Capacity -- > 1
Maximum Capacity -- > 25
However the sessions in database when we query the below are huge in nos :
select * from gv$session
As the sessions at the database end , we are not able to connect to the DB until we manually kill the session
Could anybody throw some light whether there is any eficient way to handle DB sessions from Weblogic end thru some parameter or Some best practices which could be followed ??
Thanks in Advance

Answer 1

Hi,
I m Just Throwing some light,with below few sql queries..this usually helps in my environment..Consult with DB Guy before executing the query in production.
1)Below Query will show session information and time of execution
col MODULE for a37
col osuser for a18
col username for a10
col sid for 9999
col serial# for 9999
col spid for 999
col LAST_CALL_ET for 99999
select a.sid,b.spid,a.username,
to_char(a.logon_time,'DD-MM HH24:MI:SS') LogonDate, a.osuser, a.status, a.module,a.last_call_et
from v$session a, v$process b where a.paddr = b.addr
and a.status = 'ACTIVE' and a.username is not null
order by 8 desc
2)Below Query will show all active session
set pagesize 120
set linesize 150
select username, count(*) from v$session where status = 'ACTIVE'
group by username;
column spid format a5
column sid format 9999
column serial# format 999999
column username format A10
column schemaname format A8
column osuser format a14
column machine format a32
column logondate format a15
column terminal format a10
column status format a8
column module format a25
select a.sid, a.serial#, b.spid, a.process, a.username,
to_char(a.logon_time,'DD-MM HH24:MI:SS') LogonDate, a.osuser, a.machine, a.status, a.module
from v$session a, v$process b where a.paddr = b.addr
and a.status = 'ACTIVE' and a.username is not null
order by b.spid;
3)Below Query will show inactive plus active
set pagesize 120
set linesize 150
column spid format a5
column sid format 9999
column serial# format 999999
column username format A10
column schemaname format A8
column osuser format a18
column machine format a25
column terminal format a10
column logondate format a15
column status format a8
column module format a20
select a.sid, a.serial#, b.spid, a.process, a.username,to_char(a.logon_time,'DD-MM HH24:MI:SS') LogonDate, a.osuser, a.machine, a.status, a.module
from v$session a, v$process b where a.paddr = b.addr
order by 1
Simple Queries for finding active and Inactive connections at DB End
select count(*) from v$session where MODULE like '%JDBC%';
select count(*) from v$session where MODULE like '%JDBC%' and status='ACTIVE';
select count(*) from v$session where MODULE like '%JDBC%' and status='INACTIVE';
Regards
Fabian