Thanks Rick for your responding, do you mean there is any configuration in persistence.xml? My file is very simple:
<?xml version="1.0" encoding="UTF-8"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0"> <persistence-unit name="PersistenceUnit"> <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider> <class>model.Message</class> <properties> <property name="openjpa.Log" value="DefaultLevel=TRACE"/> <!--<property name="openjpa.log" value="DefaultLevel=WARN, Runtime=INFO, Tool=INFO"/>--> </properties> </persistence-unit> </persistence> -- View this message in context: http://openjpa.208410.n2.nabble.com/Date-Problem-tp2943310p5297788.html Sent from the OpenJPA Users mailing list archive at Nabble.com.