Org.hibernate.exception.GenericJDBCException: Cannot open connection - MySQL e JavaDB Embedded

<?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="MonitorINFO-V3PU-marceloDB" transaction-type="RESOURCE_LOCAL">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <class>monitor.info.modelo.persistencia.marcelodb.Aplicativo</class>
    <class>monitor.info.modelo.persistencia.marcelodb.Chave</class>
    <class>monitor.info.modelo.persistencia.marcelodb.IdentidadePC</class>
    <class>monitor.info.modelo.persistencia.marcelodb.Usuario</class>
    <properties>
      <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
      <property name="hibernate.cache.provider_class" value="org.hibernate.cache.NoCacheProvider"/>
    </properties>
  </persistence-unit>
  <persistence-unit name="MonitorINFO-V3PU-JavaDB" transaction-type="RESOURCE_LOCAL">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <class>monitor.info.modelo.persistencia.monitorinfodb.AplicativoRede</class>
    <class>monitor.info.modelo.persistencia.monitorinfodb.AplicativoUsuario</class>
    <class>monitor.info.modelo.persistencia.monitorinfodb.Estacao</class>
    <class>monitor.info.modelo.persistencia.monitorinfodb.LogEstacaoUsuario</class>
    <class>monitor.info.modelo.persistencia.monitorinfodb.Monitor</class>
    <class>monitor.info.modelo.persistencia.monitorinfodb.MonitorInfo</class>
    <class>monitor.info.modelo.persistencia.monitorinfodb.PerfilEstacao</class>
    <class>monitor.info.modelo.persistencia.monitorinfodb.PerfilSistema</class>
    <class>monitor.info.modelo.persistencia.monitorinfodb.PropriedadeSistema</class>
    <class>monitor.info.modelo.persistencia.monitorinfodb.UsuarioEstacaoinfo</class>
    <properties>
      <property name="hibernate.connection.username" value="monitor"/>
      <property name="hibernate.connection.driver_class" value="org.apache.derby.jdbc.EmbeddedDriver"/>
      <property name="hibernate.connection.password" value="monitorando"/>
      <property name="hibernate.connection.url" value="jdbc:derby:/home/marcelo/javadb/bancos/MONITORINFO_DB"/>
      <property name="hibernate.cache.provider_class" value="org.hibernate.cache.NoCacheProvider"/>
    </properties>
  </persistence-unit>
</persistence>

public class Persistencia {

    private static EntityManagerFactory monitorInfoJavaDB;
    private static EntityManagerFactory marceloDB;

    public static EntityManagerFactory getMonitorInfoJavaDB() {
        if (monitorInfoJavaDB == null) {
            Map map = new LinkedHashMap();
            map.put("hibernate.connection.driver_class", "org.apache.derby.jdbc.EmbeddedDriver");
            map.put("hibernate.connection.username", "monitor");
            map.put("hibernate.connection.password", "monitorando");
            map.put("hibernate.connection.url", "jdbc:derby:/home/marcelo/javadb/bancos/MONITORINFO_DB");
            map.put("hibernate.cache.provider_class", "org.hibernate.cache.NoCacheProvider");
            monitorInfoJavaDB = Persistence.createEntityManagerFactory("MonitorINFO-V3PU-JavaDB",map);
        }

        return monitorInfoJavaDB;
    }

    public static EntityManagerFactory getMarceloDB() {
        if (marceloDB == null) {
            Map map = new LinkedHashMap();
            map.put("hibernate.connection.url", "jdbc:mysql://IP-SERVIDOR-REMOTO:3306/MARCELO_DB");
            map.put("hibernate.connection.username", "USER");
            map.put("hibernate.connection.password", "SENHA");
            marceloDB = Persistence.createEntityManagerFactory("MonitorINFO-V3PU-marceloDB", map);
        }

        return marceloDB;
    }

}

private void registrarMonitor(){
        MonitorInfo monitorInfo = new MonitorInfo(chave.getIdchave());
        monitorInfo.setValidacao(20);
        monitorInfo.setValidado(Short.valueOf("1"));
        Monitor monitor = new Monitor();
        monitor.setNome(txtNome.getText());
        monitor.setEmail(txtEmail.getText());
        monitor.setLogin(txtLogin.getText());
        monitor.setSenha(new String(txtSenha.getPassword()));
        MonitorInfoJpaController jpamf = new MonitorInfoJpaController(null, Persistencia.getMonitorInfoJavaDB());

        try {
            jpamf.create(monitorInfo); //aqui ocorre o erro, esta classe foi criada através do assistente do netbens 7 com um CRUD para a classe de entidade MonitorInfo , ja verifiquei a classe e funciona quando não acesso o mysql
        } catch (PreexistingEntityException ex) {
            Logger.getLogger(Splash.class.getName()).log(Level.SEVERE, null, ex);
        } catch (Exception ex) {
            Logger.getLogger(Splash.class.getName()).log(Level.SEVERE, null, ex);
        }

        MonitorJpaController jpa = new MonitorJpaController(null, Persistencia.getMonitorInfoJavaDB());
        try {
            jpa.create(monitor);
        } catch (Exception ex) {
            Logger.getLogger(Splash.class.getName()).log(Level.SEVERE, null, ex);
        }
    }