private SessionFactory getSessionFactory() {
        if (developmentMode) {
            _sessionFactory = null;
        }
        if (_sessionFactory == null) {         
            if (LOG.isDebugEnabled()) {
                LOG.debug("getSessionFactory");
            }
            if (!developmentMode) {
                Context context = null;
                try {
                    context = new InitialContext();
                    _sessionFactory = (SessionFactory) context.lookup("HibernateSessionFactory");
                }
                catch (NamingException e) {
                    LOG.warn("Couldn't load SessionFactory from context", e);
                }
                finally {
                    try {
                        if (context != null) {
                            context.close();
                        }
                    }
                    catch (Exception e) {
                        LOG.warn("Couldn't close context", e);
                    }
                }
            }
            else {
                try {
                    _sessionFactory = new Configuration().configure("/com/ixe/ods/seguridad/model/securityadmin.cfg.xml").buildSessionFactory();                   
                }
                catch (HibernateException e) {               
                    LOG.warn(e);
                }
            }
        }
        return _sessionFactory;
    }

15640 [main] FATAL connection.DatasourceConnectionProvider  - Could not find datasource: dataSource-ixeNetOraclePool
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial
   at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:640)
   at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243)
   at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:280)
   at javax.naming.InitialContext.lookup(InitialContext.java:347)
   at net.sf.hibernate.connection.DatasourceConnectionProvider.configure(DatasourceConnectionProvider.java:44)
   at net.sf.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:83)
   at net.sf.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:64)
   at net.sf.hibernate.cfg.Configuration.buildSettings(Configuration.java:1091)
   at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:737)
   at com.ixe.ods.seguridad.BaseService.getSessionFactory(BaseService.java:72)
   at com.ixe.ods.seguridad.BaseService.getSession(BaseService.java:89)
   at com.ixe.ods.seguridad.SecuritySessionBean.autorizaFacultad(SecuritySessionBean.java:53)
   at com.ixe.ods.seguridad.test.TestSecuritySession.testAutorizaFacultad(TestSecuritySession.java:56)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:324)
   at junit.framework.TestCase.runTest(TestCase.java:154)
   at junit.framework.TestCase.runBare(TestCase.java:127)
   at junit.framework.TestResult$1.protect(TestResult.java:106)
   at junit.framework.TestResult.runProtected(TestResult.java:124)
   at junit.framework.TestResult.run(TestResult.java:109)
   at junit.framework.TestCase.run(TestCase.java:118)
   at junit.framework.TestSuite.runTest(TestSuite.java:208)
   at junit.framework.TestSuite.run(TestSuite.java:203)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:377)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:261)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:152)
15656 [main] WARN seguridad.SecuritySessionBean  - net.sf.hibernate.HibernateException: Could not find datasource
_sessionFactory ==> null