diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTService.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTService.java
index d333b27..1bc63ae 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTService.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTService.java
@@ -219,11 +219,21 @@ public interface TDGWTService extends RemoteService {
 	/**
 	 * Close current tabular resource
 	 * 
-	 * @param trId
+	 * @return
 	 * @throws TDGWTServiceException
 	 */
-	public void closeTabularResource() throws TDGWTServiceException;
+	public TRId closeTabularResource() throws TDGWTServiceException;
 
+	
+	/**
+	 * Close All Tabular Resources
+	 * 
+	 * 
+	 * @throws TDGWTServiceException
+	 */
+	public void closeAllTabularResources() throws TDGWTServiceException;
+
+	
 	// Task
 	/**
 	 * Resubmit task
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTServiceAsync.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTServiceAsync.java
index a2b3e7d..1dc782a 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTServiceAsync.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTServiceAsync.java
@@ -132,7 +132,9 @@ public interface TDGWTServiceAsync {
 
 	void getConnection(RefColumn refColumn, AsyncCallback<ColumnData> callback);
 	
-	void closeTabularResource(AsyncCallback<Void> callback);
+	void closeTabularResource(AsyncCallback<TRId> callback);
+	
+	void closeAllTabularResources(AsyncCallback<Void> callback);
 	
 	// Task
 	void startTaskResubmit(TaskResubmitSession taskResubmitSession,
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionConstants.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionConstants.java
index 9d2ef06..a8cd485 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionConstants.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionConstants.java
@@ -7,8 +7,10 @@ package org.gcube.portlets.user.td.gwtservice.server;
  *
  */
 public class SessionConstants {
-	protected static final String CURRENT_TABULAR_RESOURCE = "CURRENT_TABULAR_RESOURCE";
 	protected static final String CURRENT_TR_ID = "CURRENT_TR_ID";
+	protected static final String CURRENT_TABULAR_RESOURCE = "CURRENT_TABULAR_RESOURCE";
+	protected static final String CURRENT_TABULAR_RESOURCES_OPEN = "CURRENT_TABULAR_RESOURCES_OPEN";
+
 	protected static final String TDOPEN_SESSION = "TDOPEN_SESSION";
 	protected static final String TABULAR_RESOURCE_LIST = "TABULAR_RESOURCE_LIST";
 
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java
index 64ba20f..2f708a8 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java
@@ -178,7 +178,79 @@ public class SessionUtil {
 		ASLSession aslSession = getAslSession(httpSession);
 		ScopeProvider.instance.set(aslSession.getScope().toString());
 	}
+	
+	// 
+	public static ArrayList<TabResource> getCurrentTabularResourcesOpen(HttpSession httpSession) {
+		@SuppressWarnings("unchecked")
+		ArrayList<TabResource> currentTROpen = (ArrayList<TabResource>) httpSession
+				.getAttribute(SessionConstants.CURRENT_TABULAR_RESOURCES_OPEN );
+		if (currentTROpen == null) {
+			logger.error("CURRENT_TABULAR_RESOURCES_OPEN was not acquired");
+		}
+		return currentTROpen;
+	}
 
+	public static void setCurrentTabularResourcesOpen(HttpSession httpSession,
+			ArrayList<TabResource> currentTROpen){
+		@SuppressWarnings("unchecked")
+		ArrayList<TabResource> t = (ArrayList<TabResource>) httpSession
+				.getAttribute(SessionConstants.CURRENT_TABULAR_RESOURCES_OPEN);
+		if (t != null)
+			httpSession
+					.removeAttribute(SessionConstants.CURRENT_TABULAR_RESOURCES_OPEN);
+		httpSession.setAttribute(SessionConstants.CURRENT_TABULAR_RESOURCES_OPEN,
+				currentTROpen);
+		
+	}
+	
+	public static void addToCurrentTabularResourcesOpen(HttpSession httpSession,
+			TabResource tabResource){
+		@SuppressWarnings("unchecked")
+		ArrayList<TabResource> t = (ArrayList<TabResource>) httpSession
+				.getAttribute(SessionConstants.CURRENT_TABULAR_RESOURCES_OPEN);
+		if (t != null){
+			t.add(tabResource);
+			httpSession.setAttribute(SessionConstants.CURRENT_TABULAR_RESOURCES_OPEN,
+					t);
+		} else {
+			t=new ArrayList<TabResource>();
+			t.add(tabResource);
+			httpSession.setAttribute(SessionConstants.CURRENT_TABULAR_RESOURCES_OPEN,
+					t);
+		}
+	}
+	
+	public static void removeFromCurrentTabularResourcesOpen(HttpSession httpSession,
+			TabResource tabResource){
+		@SuppressWarnings("unchecked")
+		ArrayList<TabResource> t = (ArrayList<TabResource>) httpSession
+				.getAttribute(SessionConstants.CURRENT_TABULAR_RESOURCES_OPEN);
+		if (t != null && !t.isEmpty()){
+			t.remove(tabResource);
+			httpSession.setAttribute(SessionConstants.CURRENT_TABULAR_RESOURCES_OPEN,
+					t);
+			
+		} 
+	}
+	
+	public static void removeAllFromCurrentTabularResourcesOpen(HttpSession httpSession){
+		httpSession.removeAttribute(SessionConstants.CURRENT_TABULAR_RESOURCES_OPEN);
+	}
+	
+	public static TabResource getFirstFromCurrentTabularResourcesOpen(HttpSession httpSession) {
+		@SuppressWarnings("unchecked")
+		ArrayList<TabResource> currentTROpen = (ArrayList<TabResource>) httpSession
+				.getAttribute(SessionConstants.CURRENT_TABULAR_RESOURCES_OPEN );
+		if (currentTROpen == null || currentTROpen.isEmpty()) {
+			logger.error("No CURRENT_TABULAR_RESOURCES_OPEN");
+			return null;
+		} else {
+			return currentTROpen.get(0);
+		}
+	}
+	
+	
+	//
 	public static TabResource getSDMXImportTabResource(HttpSession httpSession) {
 		TabResource tabResource = (TabResource) httpSession
 				.getAttribute(SessionConstants.SDMX_IMPORT_TABULAR_RESOURCE);
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java
index 2ca6241..c04f442 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java
@@ -304,6 +304,7 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 
 			SessionUtil.setTabResource(session, tabResource);
 			SessionUtil.setTRId(session, tabResource.getTrId());
+			SessionUtil.addToCurrentTabularResourcesOpen(session, tabResource);
 			return;
 
 		} catch (TDGWTServiceException e) {
@@ -359,13 +360,14 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 	 * {@inheritDoc}
 	 */
 	@Override
-	public void closeTabularResource() throws TDGWTServiceException {
+	public void closeAllTabularResources() throws TDGWTServiceException {
 		try {
 			HttpSession session = this.getThreadLocalRequest().getSession();
 			SessionUtil.getAslSession(session);
-
+		
 			SessionUtil.setTabResource(session, null);
 			SessionUtil.setTRId(session, null);
+			SessionUtil.removeAllFromCurrentTabularResourcesOpen(session);
 			return;
 
 		} catch (TDGWTServiceException e) {
@@ -381,6 +383,40 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 		}
 
 	}
+	
+	@Override
+	public TRId closeTabularResource() throws TDGWTServiceException {
+		try {
+			HttpSession session = this.getThreadLocalRequest().getSession();
+			SessionUtil.getAslSession(session);
+			TabResource currentTR=SessionUtil.getTabResource(session);
+			SessionUtil.removeFromCurrentTabularResourcesOpen(session, currentTR);
+			TabResource firstTR=SessionUtil.getFirstFromCurrentTabularResourcesOpen(session);
+			if(firstTR==null){
+				SessionUtil.setTabResource(session, null);
+				SessionUtil.setTRId(session, null);
+				return null;
+			} else {
+				SessionUtil.setTabResource(session, firstTR);
+				SessionUtil.setTRId(session, firstTR.getTrId());
+				return firstTR.getTrId();
+			}
+		
+
+		} catch (TDGWTServiceException e) {
+			throw e;
+		} catch (SecurityException e) {
+			e.printStackTrace();
+			throw new TDGWTServiceException(
+					"Security exception, you haven't rights!");
+		} catch (Throwable e) {
+			logger.error("getCurrentTRID(): " + e.getLocalizedMessage(), e);
+			throw new TDGWTServiceException("Error retrieving TR id: "
+					+ e.getLocalizedMessage());
+		}
+
+	}
+	
 
 	/**
 	 *