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    copied!<p>You need to tune some settings in <code>persistence.xml</code>, add:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="no"?&gt; &lt;persistence 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" version="1.0"&gt; &lt;persistence-unit name="persistenceUnit"&gt; &lt;provider&gt;org.hibernate.ejb.HibernatePersistence&lt;/provider&gt; &lt;class&gt;my.foo.bar&lt;/class&gt; &lt;exclude-unlisted-classes&gt;true&lt;/exclude-unlisted-classes&gt; &lt;properties&gt; &lt;property name="hibernate.dialect" value="dialect.ImprovedH2Dialect"/&gt; &lt;property name="hibernate.default_schema" value="ags" /&gt; &lt;property name="hibernate.show_sql" value="true"/&gt; &lt;!-- value="create" to build a new database on each run; value="update" to modify an existing database; value="create-drop" means the same as "create" but also drops tables when Hibernate closes; value="validate" makes no changes to the database --&gt; &lt;property name="hibernate.hbm2ddl.auto" value="create"/&gt; &lt;property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.ImprovedNamingStrategy"/&gt; &lt;property name="hibernate.connection.charSet" value="UTF-8"/&gt; &lt;/properties&gt; &lt;/persistence-unit&gt; </code></pre> <p>and specify all entity classes.</p> <p>see <a href="http://docs.jboss.org/hibernate/entitymanager/3.6/reference/en/html/configuration.html" rel="nofollow">http://docs.jboss.org/hibernate/entitymanager/3.6/reference/en/html/configuration.html</a></p>
 

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