diff --git a/nova/tests/functional/db/api/test_migrations.py b/nova/tests/functional/db/api/test_migrations.py
index 6130cc3adf98..770c5fa6f3f9 100644
--- a/nova/tests/functional/db/api/test_migrations.py
+++ b/nova/tests/functional/db/api/test_migrations.py
@@ -39,6 +39,7 @@ from oslo_db.sqlalchemy import utils as db_utils
 from oslo_serialization import jsonutils
 import sqlalchemy
 from sqlalchemy.engine import reflection
+import testtools
 
 from nova.db import migration
 from nova.db.sqlalchemy.api_migrations import migrate_repo
@@ -128,18 +129,18 @@ class NovaAPIModelsSync(test_migrations.ModelsMigrationsSync):
 
 class TestNovaAPIMigrationsSQLite(NovaAPIModelsSync,
                                   test_fixtures.OpportunisticDBTestMixin,
-                                  test.NoDBTestCase):
+                                  testtools.TestCase):
     pass
 
 
 class TestNovaAPIMigrationsMySQL(NovaAPIModelsSync,
                                  test_fixtures.OpportunisticDBTestMixin,
-                                 test.NoDBTestCase):
+                                 testtools.TestCase):
     FIXTURE = test_fixtures.MySQLOpportunisticFixture
 
 
 class TestNovaAPIMigrationsPostgreSQL(NovaAPIModelsSync,
-        test_fixtures.OpportunisticDBTestMixin, test.NoDBTestCase):
+        test_fixtures.OpportunisticDBTestMixin, testtools.TestCase):
     FIXTURE = test_fixtures.PostgresqlOpportunisticFixture
 
 
diff --git a/nova/tests/unit/db/test_migrations.py b/nova/tests/unit/db/test_migrations.py
index a6503eadc9fb..9a8998413dd8 100644
--- a/nova/tests/unit/db/test_migrations.py
+++ b/nova/tests/unit/db/test_migrations.py
@@ -46,6 +46,7 @@ import sqlalchemy
 from sqlalchemy.engine import reflection
 import sqlalchemy.exc
 from sqlalchemy.sql import null
+import testtools
 
 from nova.db import migration
 from nova.db.sqlalchemy import migrate_repo
@@ -1024,13 +1025,13 @@ class NovaMigrationsCheckers(test_migrations.ModelsMigrationsSync,
 
 class TestNovaMigrationsSQLite(NovaMigrationsCheckers,
                                test_fixtures.OpportunisticDBTestMixin,
-                               test.NoDBTestCase):
+                               testtools.TestCase):
     pass
 
 
 class TestNovaMigrationsMySQL(NovaMigrationsCheckers,
                               test_fixtures.OpportunisticDBTestMixin,
-                              test.NoDBTestCase):
+                              testtools.TestCase):
     FIXTURE = test_fixtures.MySQLOpportunisticFixture
 
     def test_innodb_tables(self):
@@ -1058,7 +1059,7 @@ class TestNovaMigrationsMySQL(NovaMigrationsCheckers,
 
 class TestNovaMigrationsPostgreSQL(NovaMigrationsCheckers,
                                    test_fixtures.OpportunisticDBTestMixin,
-                                   test.NoDBTestCase):
+                                   testtools.TestCase):
     FIXTURE = test_fixtures.PostgresqlOpportunisticFixture