We have been migrated a couple of months ago to the DBCP (Apache's Database Connectiong Pooling) setup for creating database connections (http://commons.apache.org/dbcp/configuration.html). We had a long period of testing in order to be sure the change in configuration would work. This week we've implemented the DBCP migration and the first errors came...
1. First of all we did not specify the maxWait attribute (default indefinitely) and then after 5 hours running the application just freezes.
java.util.NoSuchElementException: Timeout waiting for idle object
I've defined the JDBC resource in my <TOMCAT_6_HOME>\conf\context.xml as below:
Upon looking at the "Tomcat Web Application Manager" at about 15 session are active daily, so that is not a high workload for the DBCP configuration. Also connections are closed in the finally clause.
Can anyone advice how to overcome the above described errors?