diff --git a/src/main/java/org/gcube/dataanalysis/ecoengine/utils/DatabaseFactory.java b/src/main/java/org/gcube/dataanalysis/ecoengine/utils/DatabaseFactory.java
index 961c2da..79fe74f 100644
--- a/src/main/java/org/gcube/dataanalysis/ecoengine/utils/DatabaseFactory.java
+++ b/src/main/java/org/gcube/dataanalysis/ecoengine/utils/DatabaseFactory.java
@@ -166,6 +166,7 @@ public class DatabaseFactory{
 				ss.getTransaction().commit();
 			}catch(Exception e){
 				System.out.println("Could not execute query "+e.getMessage());
+				e.printStackTrace();
 				rollback(ss);
 			}