Number of connections in a JDBC pool

Question

Hi,
I am running Sun One Webserver 6.1SP4 on Solaris 8 on sparc machines. My web app interacts with Oracle 9.2 using the web server's jdbc pooling mechanism. Everything works fine, but what worries me is the number of connections always goes up even during nights when the traffic is considerably low compared to day time. Here is part of my server.xml relevant to the pool.
<JDBCCONNECTIONPOOL name="spfc-dbp1" datasourceclassname="oracle.jdbc.pool.OracleDataSource" steadypoolsize="8" maxpoo
lsize="80" poolresizequantity="8" idletimeout="300" maxwaittime="10000" connectionvalidationrequired="on" connectionvalidati
onmethod="auto-commit" validationtablename="" failallconnections="off" transactionisolationlevel="read-committed" isolationl
evelguaranteed="on">
I checked all my code to make sure I am calling close() on result sets, statements and the connection itself both immediately after completing work as well as in the finally blocks.
The only mechanism I have to bring down the number of connections is to restart the web server. I played around with the poolresizequantity, idletimeout properties, but it didn't help much.
I thank all of you in advance for any insights.
-Sharma

Answer 1

Hi Sharma,
I have a similar problem.
Starting my portal and it works for about ten minutes. Then it is unreachable, because of an ProfileException error. I guess it is too many DB Connections.
I can do 2 things:
- wait for about 20minutes and it works again for ten minutes, or
- restart tomcat.
Currently I am setting up a new Connection Pool, Jdbc2Pool.
Did you find a solution to your problem?
Ciao,
Axel