I think I worked it out. It's just a matter of making the jndi name global. It seems that JBoss does not allow me to use the mysql repository name as a local "java:" name. I made it global and everything went smoothly! Now I am just wondering whether there is a chance to make it local in someway.... Is it possible? Is it a JBoss 4.2.2 BUG? I post the old .xml files again: (In the current version I just disabled the local namespace setting: <use-java-context>false</use-java-context>) <datasources> <local-tx-datasource> <jndi-name>jdbc/MySQLDB</jndi-name> <connection-url>jdbc:mysql:///brms-db</connection-url> <driver-class>com.mysql.jdbc.Driver </driver-class> <user-name>drools</user-name> <password>drools</password> <min-pool-size>5</min-pool-size> <max-pool-size>20</max-pool-size> <idle-timeout-minutes>5</idle-timeout-minutes> <exception-sorter-class-name> com.mysql.jdbc.integration.jboss.ExtendedMysqlExceptionSorter </exception-sorter-class-name> <valid-connection-checker-class-name> com.mysql.jdbc.integration.jboss.MysqlValidConnectionChecker </valid-connection-checker-class-name> </local-tx-datasource> </datasources> I've got the following persistence manager set-up in <jboss_home>\bin\repository.xml: <PersistenceManager class=" org.apache.jackrabbit.core.persistence.db.JNDIDatabasePersistenceManager"> <param name="dataSourceLocation" value="java:jdbc/MySQLDB"/> <param name="schema" value="mysql"/> <param name="schemaObjectPrefix" value="${*wsp.name* <http://wsp.name/> }_"/> <param name="externalBLOBs" value="false" /> </PersistenceManager> Hope u can help with this..... Massi