diff --git a/myems-aggregation/space_billing_input_category.py b/myems-aggregation/space_billing_input_category.py
index 410c4f26..fc71ea70 100644
--- a/myems-aggregation/space_billing_input_category.py
+++ b/myems-aggregation/space_billing_input_category.py
@@ -249,20 +249,20 @@ def main(logger):
                     break
 
         # end of for space loop
-        if cnx_system_db:
-            cnx_system_db.close()
         if cursor_system_db:
             cursor_system_db.close()
+        if cnx_system_db:
+            cnx_system_db.close()
 
-        if cnx_energy_db:
-            cnx_energy_db.close()
         if cursor_energy_db:
             cursor_energy_db.close()
+        if cnx_energy_db:
+            cnx_energy_db.close()
 
-        if cnx_billing_db:
-            cnx_billing_db.close()
         if cursor_billing_db:
             cursor_billing_db.close()
+        if cnx_billing_db:
+            cnx_billing_db.close()
         print("go to sleep 300 seconds...")
         time.sleep(300)
         print("wake from sleep, and continue to work...")
diff --git a/myems-aggregation/space_billing_input_item.py b/myems-aggregation/space_billing_input_item.py
index 1fa53a36..aa89d2a8 100644
--- a/myems-aggregation/space_billing_input_item.py
+++ b/myems-aggregation/space_billing_input_item.py
@@ -249,20 +249,20 @@ def main(logger):
                     break
 
         # end of for space loop
-        if cnx_system_db:
-            cnx_system_db.close()
         if cursor_system_db:
             cursor_system_db.close()
+        if cnx_system_db:
+            cnx_system_db.close()
 
-        if cnx_energy_db:
-            cnx_energy_db.close()
         if cursor_energy_db:
             cursor_energy_db.close()
+        if cnx_energy_db:
+            cnx_energy_db.close()
 
-        if cnx_billing_db:
-            cnx_billing_db.close()
         if cursor_billing_db:
             cursor_billing_db.close()
+        if cnx_billing_db:
+            cnx_billing_db.close()
         print("go to sleep 300 seconds...")
         time.sleep(300)
         print("wake from sleep, and continue to work...")
diff --git a/myems-aggregation/space_billing_output_category.py b/myems-aggregation/space_billing_output_category.py
index 09bc005f..d059fd91 100644
--- a/myems-aggregation/space_billing_output_category.py
+++ b/myems-aggregation/space_billing_output_category.py
@@ -249,20 +249,20 @@ def main(logger):
                     break
 
         # end of for space loop
-        if cnx_system_db:
-            cnx_system_db.close()
         if cursor_system_db:
             cursor_system_db.close()
+        if cnx_system_db:
+            cnx_system_db.close()
 
-        if cnx_energy_db:
-            cnx_energy_db.close()
         if cursor_energy_db:
             cursor_energy_db.close()
+        if cnx_energy_db:
+            cnx_energy_db.close()
 
-        if cnx_billing_db:
-            cnx_billing_db.close()
         if cursor_billing_db:
             cursor_billing_db.close()
+        if cnx_billing_db:
+            cnx_billing_db.close()
         print("go to sleep 300 seconds...")
         time.sleep(300)
         print("wake from sleep, and continue to work...")