Sorry for that missing info... I use both unit tests where I create my components myself, but I also use FacesRequest tests where the EM's is injected automatically. My embedded EM's are configured in "embedded-jboss-beans.xml": | <bean name="NewsAdminSesamNoDSBootstrap" class="org.jboss.resource.adapter.jdbc.local.LocalTxDataSource"> | <property name="driverClass">org.hsqldb.jdbcDriver</property> | <property name="connectionURL">jdbc:hsqldb:.</property> | <property name="userName">sa</property> | <property name="jndiName">java:/NewsAdminSesamNoDS</property> | <property name="minSize">0</property> | <property name="maxSize">10</property> | <property name="blockingTimeout">1000</property> | <property name="idleTimeout">100000</property> | <property name="transactionManager"><inject bean="TransactionManager"/></property> | <property name="cachedConnectionManager"><inject bean="CachedConnectionManager"/></property> | <property name="initialContextProperties"><inject bean="InitialContextProperties"/></property> | </bean> | | <bean name="NewsAdminSesamNoDS" class="java.lang.Object"> | <constructor factoryMethod="getDatasource"> | <factory bean="NewsAdminSesamNoDSBootstrap"/> | </constructor> | </bean> | I thought that this was the thing that created my entity managers, but the properties in "persistence.xml" is also used, and this triggers the tree cache connection. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4100565#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...