Hello, so my application uses ejb 3.0 persistent entities. i am doing some simple performance studies of different application servers and realized that jboss is performing bad, when it is about to write/delete persistent entities. I believe it is a configuration issue and as far as i can see, the bottleneck is the persistent entity pooling and caching. so my question is how can i tune the cache and pool used for 3.0 entity beans to make my jboss server perform better? according to the documentation i can change these settings: # Container-managed persistence entity version 2.0 = Standard CMP 2.x EntityBean # Container-managed persistence entity version 1.1 = Standard CMP EntityBean # Bean-managed persistence entity = Standard BMP EntityBean but i did not find a setting for ejb 3.0 beans. By the way i am using JBoss 4.2.1. any help is appreciated, thanks a lot! greetings, mario View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4139908#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...