diff --git a/src/main/java/org/gcube/dataharvest/dao/DatabaseManager.java b/src/main/java/org/gcube/dataharvest/dao/DatabaseManager.java
index 635748a..52fb7fb 100644
--- a/src/main/java/org/gcube/dataharvest/dao/DatabaseManager.java
+++ b/src/main/java/org/gcube/dataharvest/dao/DatabaseManager.java
@@ -15,42 +15,19 @@ public class DatabaseManager {
 	
 	private static Logger logger = LoggerFactory.getLogger(DatabaseManager.class);
 	
-	public DatabaseManager() {
-	
-	}
-	
 	public void insertMonthlyData(Date from, Date to, List<HarvestedData> data, boolean updateFlag) {
 		Dao dao = null;
 		try {
 			dao = dbConnect();
 			dao.insertMonthlyMeasure(data, from, to, updateFlag);
 		} catch(Exception e) {
-			logger.error(e.getLocalizedMessage());
+			logger.error("", e);
 		} finally {
 			if(dao != null) {
 				try {
 					dao.disconnect();
 				} catch(DaoException e) {
-					logger.error(e.getLocalizedMessage());
-				}
-			}
-		}
-	}
-	
-	public String[] getActiveVres() {
-		Dao dao = null;
-		try {
-			dao = dbConnect();
-			return dao.getActiveVres();
-		} catch(Exception e) {
-			logger.error(e.getLocalizedMessage());
-			return null;
-		} finally {
-			if(dao != null) {
-				try {
-					dao.disconnect();
-				} catch(DaoException e) {
-					logger.error(e.getLocalizedMessage());
+					logger.error("", e);
 				}
 			}
 		}
@@ -64,5 +41,4 @@ public class DatabaseManager {
 		dao.connect(dcd.getURI(), dcd.getUser(), dcd.getPassword());
 		return dao;
 	}
-	
 }