hello I am trying to start my jboss(5.1) with derby, but my ear does not get deployed at all... Jboss gives an impression that it has started, when i look in inside my ear is not noticed by jboss at all...... The same setup works fine with oracle and mysql, with my ear properly deployed.... Any help??? the below is the contents of my datastore xml: <local-tx-datasource> <jndi-name>DefaultDS</jndi-name> <connection-url>jdbc:derby:MY_DATABASE;create=true</connection-url> <driver-class>org.apache.derby.jdbc.EmbeddedDriver</driver-class> <user-name>NA</user-name> NA <!-- <check-valid-connection-sql>show tables</check-valid-connection-sql>--> <track-statements>true</track-statements> <max-pool-size>40</max-pool-size> <blocking-timeout-millis>30000</blocking-timeout-millis> <exception-sorter-class-name>com.dhyan.nms.server.genlib.database.dberror.DataBaseErrorChecker</exception-sorter-class-name> <!-- Don't change the isolation level, this will affect schedulers--> <!--<transaction-isolation>TRANSACTION_READ_UNCOMMITTED</transaction-isolation>--> <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) --> <type-mapping>Derby</type-mapping> </local-tx-datasource> View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4266006#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...