Listener won't release connections

Question

Hi,
I'm getting "Exception occurred while getting connection: oracle.ucp.UniversalConnectionPoolException: All connections in the Universal Connection Pool are in use"
after a few seconds of single user use on my Apex (4.1) application.
Looking at the admin page I can see that the "active" connections have reached the max connections setting.
Problem is, the active sessions counter never reduces. I am just entering the demo app that comes with Apex going into orders and selecting one.
Trying exactly the same on my laptop with local listener and database set up the active connections are released and return to 0 when I do exactly the same.
The JDBC settings are as follows: Inital Pool 3, Min connections 1, max 10, Max statements 10, Inactivity TO 1800, Statement TO 900.
Increasing the max connections simply delays the problem.
Any ideas as to why the connections are not being released back into the pool? Thought it might be something wrong with the Apex install which was done for using the app server, but I can't see anything from the installation guide that helps.
Cheers
Mark

Answer 1

Apex listener 1.1.4.195.00.12
DB 11.2
Apex 4.1
Here is the log, as soon as I start using the demo app I get closed connection messages, and for each one I get an active connection in the admin console, until eventually there are none available.
Sometimes it seems to behave, but other times it doesn't work at all.
I have the listener running on an application server (stand alone). But if I have the listener running on my local PC it gives the same issues.
I have tried installing the db, apex, listener all on my laptop and the demo app works just fine with none of these closed connection messages
Log below:
c:\apexlstnr>java -jar apex.war
INFO: Starting: C:\apexlstnr\apex.war
See: 'java -jar apex.war --help' for full range of configuration options
INFO: Extracting to: C:\Users\carym\AppData\Local\Temp\apex
INFO: Using classpath: file:/C:/Users/carym/AppData/Local/Temp/apex/apex/____emb
edded/start.jar:file:/C:/Users/carym/AppData/Local/Temp/apex/apex/WEB-INF/lib/ap
ex.jar:file:/C:/Users/carym/AppData/Local/Temp/apex/apex/WEB-INF/lib/commons-fil
eupload-1.2.1.jar:file:/C:/Users/carym/AppData/Local/Temp/apex/apex/WEB-INF/lib/
je-4.0.103.jar:file:/C:/Users/carym/AppData/Local/Temp/apex/apex/WEB-INF/lib/ojd
bc6.jar:file:/C:/Users/carym/AppData/Local/Temp/apex/apex/WEB-INF/lib/ojmisc.jar
:file:/C:/Users/carym/AppData/Local/Temp/apex/apex/WEB-INF/lib/poi-3.6-20091214.
jar:file:/C:/Users/carym/AppData/Local/Temp/apex/apex/WEB-INF/lib/ucp.jar:file:/
C:/Users/carym/AppData/Local/Temp/apex/apex/WEB-INF/lib/xdb-11.2.0.jar:file:/C:/
Users/carym/AppData/Local/Temp/apex/apex/WEB-INF/lib/xmlparserv2-11.2.0.jar:
INFO: Starting Embedded Web Container in: C:\Users\carym\AppData\Local\Temp\apex
Oct 29, 2012 9:52:51 AM ____bootstrap.Deployer deploy
INFO: Will deploy application path=C:\Users\carym\AppData\Local\Temp\apex\apex\W
EB-INF\web.xml
Oct 29, 2012 9:52:51 AM ____bootstrap.Deployer deploy
INFO: deployed application path=C:\Users\carym\AppData\Local\Temp\apex\apex\WEB-
INF\web.xml
Using config file: C:\Users\carym\AppData\Local\Temp\apex\apex-config.xml
-- listing properties --
PropertyCheckInterval=60
ValidateConnection=true
MinLimit=1
MaxLimit=10
InitialLimit=3
AbandonedConnectionTimeout=900
MaxStatementsLimit=10
InactivityTimeout=1800
MaxConnectionReuseCount=1000
APEX Listener version : null
APEX Listener server info: Grizzly/1.9.18-o
Oct 29, 2012 9:52:56 AM com.sun.grizzly.Controller logVersion
INFO: Starting Grizzly Framework 1.9.18-o - Mon Oct 29 09:52:56 GMT 2012
INFO: http://localhost:8080/apex started.
Using JDBC driver: Oracle JDBC driver version: 11.2.0.2.0
Closed Connection
Closed Connection
Closed Connection
Closed Connection
Closed Connection