Listener is not updated

Question

Hello,
I have a problem with listener. It looks like it is not updated by PMON. I have application server with jdbc pool connected to Oracle database. After restarting the application server the number of established connection is always growing till the listener state is going to status blocked. The netstat command shows expected number of connection as well as results from v$session view. For instance
select count(*) from v$session shows 176
but lsnrctl services shows
Service "xxxx.xxx.local" has 1 instance(s).
Instance "xxxx", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:444 refused:0 state:ready
LOCAL SERVER
What can I do to solve this problem?
Thank you very much in advance.
Lukasz.

Answer 1

Looks like the problem with the application server connection pool configuration and the connections established to the database are not exiting properly.
The number of connections to the database keep growing as no session is exiting.
You might be observing more INACTIVE sessions that are still connected to the database. Check your application server configuration and documentation related to application server to end the session once it is completed the transaction.
check below for a count of active and inactive sessions
sql> select status, count(*) from v$session group by status;