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POFailed to read schema document 'http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd
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  1. POFailed to read schema document 'http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd
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    copied!<p>I'm writing a simple Swing app for university and using Hibernate and Oracle XE.</p> <p>I'm stuck with that error:</p> <pre><code> 29.06.2011 14:54:10 org.hibernate.cfg.annotations.Version &lt;clinit&gt; INFO: Hibernate Annotations 3.3.1.GA 29.06.2011 14:54:10 org.hibernate.cfg.Environment &lt;clinit&gt; INFO: Hibernate 3.2.5 29.06.2011 14:54:10 org.hibernate.cfg.Environment &lt;clinit&gt; INFO: hibernate.properties not found 29.06.2011 14:54:10 org.hibernate.cfg.Environment buildBytecodeProvider INFO: Bytecode provider name : cglib 29.06.2011 14:54:10 org.hibernate.cfg.Environment &lt;clinit&gt; INFO: using JDK 1.4 java.sql.Timestamp handling 29.06.2011 14:54:10 org.hibernate.ejb.Version &lt;clinit&gt; INFO: Hibernate EntityManager 3.3.2.GA 29.06.2011 14:54:31 org.hibernate.ejb.packaging.PersistenceXmlLoader$ErrorLogger warning WARNING: Warning parsing XML: XML InputStream(2) schema_reference.4: Failed to read schema document 'http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not &lt;xsd:schema&gt;. 29.06.2011 14:54:52 org.hibernate.ejb.packaging.PersistenceXmlLoader$ErrorLogger warning </code></pre> <p>my persistence.xml:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;persistence version="2.0" 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_2_0.xsd"&gt; &lt;persistence-unit name="airportPU"&gt; &lt;provider&gt;org.hibernate.ejb.HibernatePersistence&lt;/provider&gt; &lt;class&gt;my.airport.model.Crew&lt;/class&gt; &lt;class&gt;my.airport.model.Country&lt;/class&gt; &lt;class&gt;my.airport.model.City&lt;/class&gt; &lt;class&gt;my.airport.model.Plane&lt;/class&gt; &lt;class&gt;my.airport.model.Model&lt;/class&gt; &lt;class&gt;my.airport.model.Passenger&lt;/class&gt; &lt;class&gt;my.airport.model.Role&lt;/class&gt; &lt;class&gt;my.airport.model.Airport&lt;/class&gt; &lt;class&gt;my.airport.model.Spec&lt;/class&gt; &lt;class&gt;my.airport.model.AverageFlightTime&lt;/class&gt; &lt;class&gt;my.airport.model.CrewInTheRoleOnTheFlight&lt;/class&gt; &lt;class&gt;my.airport.model.Flight&lt;/class&gt; &lt;class&gt;my.airport.model.PassengersOnTheFlight&lt;/class&gt; &lt;properties&gt; &lt;property name="javax.persistence.jdbc.url" value="jdbc:oracle:thin:@172.16.0.3:1521:XE"/&gt; &lt;property name="javax.persistence.jdbc.password" value="AIRPORT"/&gt; &lt;property name="javax.persistence.jdbc.driver" value="oracle.jdbc.OracleDriver"/&gt; &lt;property name="javax.persistence.jdbc.user" value="AIRPORT"/&gt; &lt;/properties&gt; &lt;/persistence-unit&gt; &lt;/persistence&gt; </code></pre> <p>Creating entity manager factory:</p> <pre><code>public static EntityManagerFactory emf; public static EntityManager em; static { try { emf = Persistence.createEntityManagerFactory("airportPU"); em = emf.createEntityManager(); } catch (Exception e) { System.exit(1); } } </code></pre>
 

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