Hibernate + Oracle XE :"Cannot open connection"(me

Assuntos Gerais Agile
#1

Pessoal,

Já não sei mais onde postar e o que alterar no meu código.Já fiz de tudo(bom…acho q quase tudo ) e não consigo resolver o meu problema. Peço que se alguem tiver alguma idéia(seja ela qual for…), que tente me ajudar , por favor.

meu hibernate.cfg.xml:

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
            
<hibernate-configuration>         
    <session-factory>          
        <property name="hibernate.dialect">org.hibernate.dialect.OracleDialect</property>
        <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
        <property name="connection.url">jdbc:oracle:thin:@127.0.0.1:8080:XE</property>
        <property name="connection.username">aa</property>
        <property name="connection.password">aa</property>
        <property name="connection.pool_size">1</property>
        <property name="hibernate.show_sql">true</property>
        <mapping resource="br/com/modelo/persistencia/persistencia.hbm.xml"/>           
    </session-factory>        
</hibernate-configuration>

trecho do código onde pego o session:

private static SessionFactory sf;

sf = new Configuration().configure().buildSessionFactory();
Session s = sf.openSession();
s.save(produto);

esta gerando um exception quando chega no método save(apesar que nem esta pegando a sessão):

exception

javax.servlet.ServletException: Cannot open connection
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause

org.hibernate.exception.GenericJDBCException: Cannot open connection
org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:103)
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:91)
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:29)
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:420)
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144)
org.hibernate.jdbc.AbstractBatcher.prepareSelectStatement(AbstractBatcher.java:123)
org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:73)
org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:98)
org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:534)
org.hibernate.impl.SessionImpl.save(SessionImpl.java:522)
org.hibernate.impl.SessionImpl.save(SessionImpl.java:518)

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Agradeço desde já…

#2