diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000000000000000000000000000000000000..a3b8768a509111311fac0bd15a3536122df9e3cd
Binary files /dev/null and b/.DS_Store differ
diff --git a/Frontend Angular 4/src/app/shared/config.ts b/Frontend Angular 4/src/app/shared/config.ts
index 269b0832a942fff97480651e814f48f506bb2fa2..5faa2cf2f8348138aeafb2d7aaa8905734707e08 100644
--- a/Frontend Angular 4/src/app/shared/config.ts	
+++ b/Frontend Angular 4/src/app/shared/config.ts	
@@ -5,5 +5,6 @@
 //export const GHCI_URL = 'ws://localhost:9090/endpoint';
 
 //Configuracion dinamica pensando en servidor con ip dinamica
-export const SERVER = window.location.protocol + '//' + window.location.host;//'http://localhost:9090';
+//export const SERVER = window.location.protocol + '//' + window.location.host;//'http://localhost:9090';
+export const SERVER = 'http://localhost:8080';
 export const GHCI_URL = window.location.protocol == 'http:'?  'ws://'+window.location.host+'/endpoint': 'wss://'+window.location.host+'/endpoint';
diff --git a/Servidor JEE/WebContent/WEB-INF/matefun.properties b/Servidor JEE/WebContent/WEB-INF/matefun.properties
index 038644a932337ba99453135cb89f810a1577e78b..730c4254c7ec168c624a02fd3ff1e14e10d65c45 100644
--- a/Servidor JEE/WebContent/WEB-INF/matefun.properties	
+++ b/Servidor JEE/WebContent/WEB-INF/matefun.properties	
@@ -1,7 +1,7 @@
 #Deben definirse moodle_endpoint y moodle_group para conectar con el API de moodle. 
 #De lo contrario solo se realizara login local.
-moodle_endpoint=https://tics.moodlecloud.com
-moodle_group=Piloto
+moodle_endpoint=https://matefun.moodlecloud.com
+moodle_group=introduction to moodle
 #El grupo se define como liceoId#grado#grupo#anio
 #Si no se sefine default_group entonces no se asigna grupo para docente o alumno.
 default_group=0#2#Año#2017
diff --git a/Servidor JEE/pom.xml b/Servidor JEE/pom.xml
index bd6f0ed40eb0ccc728816bad2c441b1cf234ff03..b645fd937ac03ca4256d1171b4fd10d659b492e4 100644
--- a/Servidor JEE/pom.xml	
+++ b/Servidor JEE/pom.xml	
@@ -46,7 +46,11 @@
 		    <artifactId>jackson-annotations</artifactId>
 		    <version>2.9.0</version>
 		</dependency>
-		
+		<dependency>
+		    <groupId>mysql</groupId>
+		    <artifactId>mysql-connector-java</artifactId>
+		    <version>5.1.42</version>
+		</dependency>
 	</dependencies>
 
 	<build>
diff --git a/Servidor JEE/src/main/java/edu/proygrado/dto/MoodleCoursesInfoDTO.java b/Servidor JEE/src/main/java/edu/proygrado/dto/MoodleCoursesInfoDTO.java
index dfe454b33fb00376c7cbb010bdf7ffa2dea5bd3b..5e124f812851dc0c96de57d382c3bd053664d2f8 100644
--- a/Servidor JEE/src/main/java/edu/proygrado/dto/MoodleCoursesInfoDTO.java	
+++ b/Servidor JEE/src/main/java/edu/proygrado/dto/MoodleCoursesInfoDTO.java	
@@ -21,7 +21,7 @@ public class MoodleCoursesInfoDTO {
 	private Boolean confirmed;
 	private String lang;
 	private String theme;
-	private Long timezone;
+	private String timezone;
 	private Long mailformat;
 	private String description;
 	private Long descriptionformat;
@@ -118,10 +118,10 @@ public class MoodleCoursesInfoDTO {
 	public void setTheme(String theme) {
 		this.theme = theme;
 	}
-	public Long getTimezone() {
+	public String getTimezone() {
 		return timezone;
 	}
-	public void setTimezone(Long timezone) {
+	public void setTimezone(String timezone) {
 		this.timezone = timezone;
 	}
 	public Long getMailformat() {
diff --git a/Servidor JEE/src/main/java/edu/proygrado/ejb/LoginEJB.java b/Servidor JEE/src/main/java/edu/proygrado/ejb/LoginEJB.java
index ab747f39a80d36f60f5c7c1dfe05b19847903bba..d1f5ce11bf9b8909a90a62f3e384ad85e0368cc6 100644
--- a/Servidor JEE/src/main/java/edu/proygrado/ejb/LoginEJB.java	
+++ b/Servidor JEE/src/main/java/edu/proygrado/ejb/LoginEJB.java	
@@ -15,13 +15,17 @@ import java.util.Date;
 import java.util.List;
 import java.util.Properties;
 
+import javax.annotation.Resource;
 import javax.ejb.EJB;
 import javax.ejb.Stateless;
+import javax.ejb.TransactionManagement;
+import javax.ejb.TransactionManagementType;
 import javax.inject.Inject;
 import javax.persistence.EntityManager;
 import javax.persistence.PersistenceContext;
 import javax.persistence.TypedQuery;
 import javax.servlet.ServletContext;
+import javax.transaction.UserTransaction;
 import javax.ws.rs.client.ClientBuilder;
 import javax.ws.rs.core.GenericType;
 
@@ -50,6 +54,7 @@ import edu.proygrado.modelo.Usuario;
  * @author gonzalo
  */
 @Stateless
+@TransactionManagement(value=TransactionManagementType.BEAN)
 public class LoginEJB {
 	
 	@Inject
@@ -63,6 +68,9 @@ public class LoginEJB {
 
 	@EJB
 	private InvitadoEJB invitadoEJB;
+	
+	@Resource
+	private UserTransaction userTransaction;
 
 	public boolean validarSesion(String token){
 		Sesion sesion = em.find(Sesion.class,token);
@@ -80,7 +88,14 @@ public class LoginEJB {
 			sesion.setToken(token);
 			sesion.setUsuario(usuario);
 			sesion.setTimestamp(new Date());
-			em.persist(sesion);
+			try {
+				userTransaction.begin();
+				em.persist(sesion);
+				userTransaction.commit();
+			}catch(Exception e) {
+				System.out.println("Error persistiendo sesion: "+e.getMessage());
+			}
+			
 		}else{
 			sesion.setTimestamp(new Date());
 		}
@@ -222,9 +237,15 @@ public class LoginEJB {
 			conf.setFontSizeEditor(12);
 			conf.setThemeEditor("dracula");
 			nuevoDesdeMoodle.setConfiguracion(conf);
-			em.persist(conf);
-			em.persist(root);
-			em.persist(nuevoDesdeMoodle);
+			try {
+				userTransaction.begin();
+				em.persist(conf);
+				em.persist(root);
+				em.persist(nuevoDesdeMoodle);
+				userTransaction.commit();
+			}catch(Exception e) {
+				System.out.println("Error guardando configuracion de usuario");
+			}
 			String tokenAuth = generateToken();
 			updateSession(tokenAuth, usuario);
 			invitadoEJB.setUsuario(tokenAuth, nuevoDesdeMoodle);
diff --git a/Servidor JEE/src/main/resources/META-INF/persistence.xml b/Servidor JEE/src/main/resources/META-INF/persistence.xml
index 79c49c23ed6b00775d68c701236b61f4087696b4..3d5c78a45b8e5dba9deeed1b84df62a0df0818a6 100644
--- a/Servidor JEE/src/main/resources/META-INF/persistence.xml	
+++ b/Servidor JEE/src/main/resources/META-INF/persistence.xml	
@@ -25,7 +25,7 @@
 
 	<persistence-unit name="matefunDS" transaction-type="JTA">
 	<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
-	<jta-data-source>jdbc/azureDSjta</jta-data-source>
+	<jta-data-source>java:/matefun</jta-data-source>
 	<class>edu.proygrado.modelo.Alumno</class>
 	<class>edu.proygrado.modelo.Archivo</class>
 	<class>edu.proygrado.modelo.Configuracion</class>