"wimxa" wrote : I.e. the only option is not using DataSources, but JDBC directly. JBoss will always forcibly close the connection. Is there some parameter that I can tweak this with? | The CachedConnectionInterceptor(CCI) in the Interceptor that checks for the leaked connections in ejb method calls.You can disable the CachedConnectionInterceptor but I would not recommend you that, I would rather advice you to refactor the LegacyObject, you should not pass the connection object to the LegacyObject. The DataSource object should be passed to the LegacyObject instead of the connection object. Check for the CCI at $JBOSS_HOME/server//conf/standardjboss.xml, just uncomment it in the appropriate container. http://www.jboss.org/community/docs/DOC-12682 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4189975#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...