diff --git a/modules/dbsupport/src/main/java/org/jpos/ee/DB.java b/modules/dbsupport/src/main/java/org/jpos/ee/DB.java
index 64c5b8c563..88c12e5ad9 100644
--- a/modules/dbsupport/src/main/java/org/jpos/ee/DB.java
+++ b/modules/dbsupport/src/main/java/org/jpos/ee/DB.java
@@ -170,6 +170,11 @@ public Dialect getDialect() {
     }
 
     public static synchronized void invalidateSessionFactories() {
+        for (SessionFactory sf : sessionFactories.values()) {
+            try {
+                sf.close();
+            } catch (Exception ignored) {}
+        }
         sessionFactories.clear();
     }