Hi, this is a snhapshot of my hsqldb-jdbc2-service.xml configuration file: 0 0 jboss.mq:service=PersistenceManager . I set HighMemoryMark and MaxMemoryMark to '0' value in order to see my localDB.data file growing up. I know, watching the hsqldb log file localDB.log, that the MessageCache write jms messages in the hsqld but localDB.data file size is always 0. I am using jboss3.2.7 with jvm1.4.2. I made the same test with jboss4.0 and jvm5 and localDB.data grew up as I expected. Am I missing something? Thanks. emiliano View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4041280#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...