Hi We use JBoss 4.0.5.GA + EJB3 RC9 patch 1 + JBoss Cache 1.4.1.GA in a cluster with two nodes. All our entity EJBs are Optimistic locked via @Version. However, the cache looks like it uses pessimistic locks during the whole transaction. Is the JBoss Cache in conflict with the @Version annotation? How should I tune the JBoss cache? I would like to set locking: OPTIMISTIC replication: INVALID_SYNC is that safe with EJB3 entities? My persistence.xml | <?xml version="1.0" encoding="UTF-8"?> | <!-- $Id: persistence.xml,v 1.3 2006/06/27 15:07:45 johan Exp $ --> | <persistence> | <persistence-unit name="IBCS"> | <jta-data-source>java:/IBDS</jta-data-source> | <properties> | <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLInnoDBDialect"/> | <property name="hibernate.hbm2ddl.auto" value="none"/> | <property name="hibernate.cache.provider_class" value="org.jboss.ejb3.entity.TreeCacheProviderHook"/> | <property name="hibernate.treecache.mbean.object_name" value="jboss.cache:service=EJB3EntityTreeCache"/> | </properties> | </persistence-unit> | </persistence> | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4008701#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...