diff --git a/constance/backends/database/__init__.py b/constance/backends/database/__init__.py
index ce9bb48..a281a4f 100644
--- a/constance/backends/database/__init__.py
+++ b/constance/backends/database/__init__.py
@@ -1,6 +1,7 @@
 from django.core.cache import caches
 from django.core.cache.backends.locmem import LocMemCache
 from django.core.exceptions import ImproperlyConfigured
+from django.db import OperationalError
 from django.db.models.signals import post_save
 
 from .. import Backend
@@ -53,9 +54,12 @@ class DatabaseBackend(Backend):
         if not keys:
             return
         keys = {self.add_prefix(key): key for key in keys}
-        stored = self._model._default_manager.filter(key__in=keys)
-        for const in stored:
-            yield keys[const.key], const.value
+        try:
+            stored = self._model._default_manager.filter(key__in=keys)
+            for const in stored:
+                yield keys[const.key], const.value
+        except OperationalError:
+            pass
 
     def get(self, key):
         key = self.add_prefix(key)
@@ -69,7 +73,7 @@ class DatabaseBackend(Backend):
         if value is None:
             try:
                 value = self._model._default_manager.get(key=key).value
-            except self._model.DoesNotExist:
+            except (OperationalError, self._model.DoesNotExist):
                 pass
             else:
                 if self._cache: