diff --git a/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java b/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
index 63a2930..91dd25e 100644
--- a/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
+++ b/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
@@ -45,21 +45,33 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	 * use this constructor carefully from test classes
 	 * @param dropSchema set true if you want do drop the current and set up new one
 	 */
-	protected DBCassandraAstyanaxImpl(boolean dropSchema) throws Exception {
-		conn = new CassandraClusterConnection(dropSchema);
+	protected DBCassandraAstyanaxImpl(boolean dropSchema) {
+		try {
+			conn = new CassandraClusterConnection(dropSchema);
+		} catch (Exception e) {
+			throw new RuntimeException(e);
+		}
 	}
 	/**
 	 * public constructor, no dropping schema is allowed
 	 */
-	public DBCassandraAstyanaxImpl() throws Exception {
-		conn = new CassandraClusterConnection(false);
+	public DBCassandraAstyanaxImpl() {
+		try {
+			conn = new CassandraClusterConnection(false);
+		} catch (Exception e) {
+			throw new RuntimeException(e);
+		}
 	}
 
 	/**
 	 * public constructor, no dropping schema is allowed, infrastructureName is given.
 	 */
-	public DBCassandraAstyanaxImpl(String infrastructureName) throws Exception {
-		conn = new CassandraClusterConnection(false, infrastructureName);
+	public DBCassandraAstyanaxImpl(String infrastructureName) {
+		try {
+			conn = new CassandraClusterConnection(false, infrastructureName);
+		} catch (Exception e) {
+			throw new RuntimeException(e);
+		}
 	}
 
 	/*
diff --git a/src/main/java/org/gcube/portal/databook/server/RunningCluster.java b/src/main/java/org/gcube/portal/databook/server/RunningCluster.java
index c249adf..70921c4 100644
--- a/src/main/java/org/gcube/portal/databook/server/RunningCluster.java
+++ b/src/main/java/org/gcube/portal/databook/server/RunningCluster.java
@@ -72,7 +72,7 @@ public class RunningCluster implements Serializable {
 	 * @param infrastructureName could be null
 	 * @return an instance of the RunningCluster
 	 */
-	public static synchronized RunningCluster getInstance(String infrastructureName) throws Exception {
+	public static synchronized RunningCluster getInstance(String infrastructureName){
 		if (singleton == null) {
 			singleton = new RunningCluster(infrastructureName);
 		}
@@ -81,7 +81,7 @@ public class RunningCluster implements Serializable {
 	/**
 	 * private constructor
 	 */
-	private RunningCluster(String infrastructureName) throws Exception {
+	private RunningCluster(String infrastructureName){
 		//Query the IS (for the future)
 		try{
 			List<ServiceEndpoint> resources = getConfigurationFromIS(infrastructureName);
@@ -116,7 +116,7 @@ public class RunningCluster implements Serializable {
 	 * @return the
 	 * @throws Exception
 	 */
-	private List<ServiceEndpoint> getConfigurationFromIS(String infrastructureName) throws Exception  {
+	private List<ServiceEndpoint> getConfigurationFromIS(String infrastructureName) {
 		_log.debug("getConfigurationFromIS infrastructureName="+infrastructureName );
 		String scope = "/";
 		if(infrastructureName != null && !infrastructureName.isEmpty())
diff --git a/src/main/java/org/gcube/portal/databook/server/Tester.java b/src/main/java/org/gcube/portal/databook/server/Tester.java
index cb95a60..d7425ba 100644
--- a/src/main/java/org/gcube/portal/databook/server/Tester.java
+++ b/src/main/java/org/gcube/portal/databook/server/Tester.java
@@ -2,7 +2,6 @@ package org.gcube.portal.databook.server;
 
 import org.gcube.portal.databook.shared.*;
 import org.gcube.portal.databook.shared.ex.*;
-import org.junit.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -19,18 +18,17 @@ public class Tester {
     private static DBCassandraAstyanaxImpl store;
     private static Logger LOGGER = LoggerFactory.getLogger(Tester.class);
 
-    public Tester() throws Exception {
+    public Tester() {
         store = new DBCassandraAstyanaxImpl("gcube"); //set to true if you want to drop the KeySpace and recreate it
     }
 
-    public static void main(String[] args) throws Exception {
+    public static void main(String[] args) throws ColumnNameNotFoundException, PrivacyLevelTypeNotFoundException, FeedIDNotFoundException, FeedTypeNotFoundException {
         Tester test = new Tester();
         //test.getComment();
         test.testFunc();
         System.exit(0);
 
     }
-    @Test
     public  void testFunc() throws ColumnNameNotFoundException, PrivacyLevelTypeNotFoundException, FeedIDNotFoundException, FeedTypeNotFoundException {
         String postIdToUpdate = "047c601d-2291-4974-9224-d6732b1fbe26";
         Post read = store.readPost(postIdToUpdate);