I have a sample application (adapted from http://www.eclipse.org/webtools/dali/docs/tutorial_1.0/dali_jsf_tutorial.htm) that I am running on JBoss. When I run the application with a persistence.xml file that specifies the JDBC connection everything works, but if I change the persistence.xml file to use a JNDI name that is being mapped by JBoss I can read data fine, but when I attempt to insert data I get the error detailed below. Persistence.xml file that does not work: | <?xml version="1.0" encoding="UTF-8"?> | <persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"> | <persistence-unit name="default" transaction-type="RESOURCE_LOCAL"> | <jta-data-source>java:DaliDS</jta-data-source> | <class>org.eclipse.dali.example.jsf.inventory.model.Inventory</class> | <class>org.eclipse.dali.example.jsf.inventory.model.Item</class> | <class>org.eclipse.dali.example.jsf.inventory.model.Order</class> | <properties> | <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect"/> | <property name="hibernate.hbm2dll.auto" value="update"/> | </properties> | </persistence-unit> | Persistence.xml file that does work: | <?xml version="1.0" encoding="UTF-8"?> | <persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"> | <persistence-unit name="default"> | <class>org.eclipse.dali.example.jsf.inventory.model.Inventory</class> | <class>org.eclipse.dali.example.jsf.inventory.model.Item</class> | <class>org.eclipse.dali.example.jsf.inventory.model.Order</class> | <properties> | <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect"/> | <property name="hibernate.hbm2dll.auto" value="update"/> | <property name="hibernate.connection.driver_class" value="org.apache.derby.jdbc.ClientDriver"/> | <property name="hibernate.connection.url" value="jdbc:derby://localhost:1527/sample;create=true"/> | <property name="hibernate.connection.username" value="dali"/> | <property name="hibernate.connection.password" value="dali"/> | </properties> | </persistence-unit> | Is hibernate configured to work differently when run under jboss? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4142378#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...