Database engine close

rowers/models.py

@@ -154,7 +154,8 @@ def auto_delete_strokedata_on_delete(sender, instance, **kwargs):
                 result = conn.execute(query)
             except:
                 print "Database Locked"
-
+        conn.close()
+                
 class StrokeData(models.Model):
     class Meta:
         db_table = 'strokedata'