The error was coming from a workaround that I was using, related to jbpm-service.beans, after removing this the datasource was correctly binded. Nevertheless now I have an authentication error: Failed to load users/passwords/role files | java.io.IOException: No properties file: users.properties or defaults: defaultUsers.properties found | at org.jboss.security.auth.spi.Util.loadProperties(Util.java:315) I have changed the jbpm policy in login-config.xml to the correct query: | SELECT g.NAME_ ,'Roles' | FROM JBPM4_ID_USER u,JBPM4_ID_MEMBERSHIP m, JBPM4_ID_GROUP g | WHERE g.TYPE_='security-role' AND m.GROUP_ = g.DBID_ AND m.USER_ = u.DBID_ AND u.ID_=? | Anyone knows what is missing? Do I have to create a users.properties? Thanks, Sergio View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4257853#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...