[jboss-user] Turning off JBoss instance cache

Hello, We have a legacy application which was running on WebLogic 7.1 and are in the process of migrating it to JBoss. The JBoss we chose is 4.0.5.GA. The application uses its home-grown instance cache (which is bad) and it runs fine on weblogic. But when we deploy it in JBoss, the instance caching of JBoss seems staying in its way. When findByPrimaryKey is called on a home interface, the ejbFindByPrimaryKey of the BMP entity bean is not called as our application always expects. Is there a way to turning off the instance caching? We tried setting commit-on to "C" and <cache-invalidation>true</cache-invalidation> in jboss.xml of the beans , but didn't get it work. Could you help on this? Thanks Richard