diff --git a/etc/nova/nova-config-generator.conf b/etc/nova/nova-config-generator.conf
index ad2be609139f..50a2f75c46d6 100644
--- a/etc/nova/nova-config-generator.conf
+++ b/etc/nova/nova-config-generator.conf
@@ -10,7 +10,6 @@ namespace = oslo.privsep
 namespace = oslo.service.periodic_task
 namespace = oslo.service.service
 namespace = oslo.db
-namespace = oslo.db.concurrency
 namespace = oslo.middleware
 namespace = oslo.concurrency
 namespace = keystonemiddleware.auth_token
diff --git a/nova/db/api.py b/nova/db/api.py
index 8c5281d8a608..35ddc6475834 100644
--- a/nova/db/api.py
+++ b/nova/db/api.py
@@ -27,17 +27,17 @@ these objects be simple dictionaries.
 
 """
 
-from oslo_db import concurrency
+from oslo_db import api
 from oslo_log import log as logging
 
 import nova.conf
 
-
 CONF = nova.conf.CONF
 LOG = logging.getLogger(__name__)
 
-_BACKEND_MAPPING = {'sqlalchemy': 'nova.db.sqlalchemy.api'}
-IMPL = concurrency.TpoolDbapiWrapper(CONF, backend_mapping=_BACKEND_MAPPING)
+IMPL = api.DBAPI.from_config(
+    conf=CONF, backend_mapping={'sqlalchemy': 'nova.db.sqlalchemy.api'},
+)
 
 
 ###################
diff --git a/releasenotes/notes/drop-oslo_db-use_tpool-48542a28d10e1bae.yaml b/releasenotes/notes/drop-oslo_db-use_tpool-48542a28d10e1bae.yaml
new file mode 100644
index 000000000000..9dee372f1567
--- /dev/null
+++ b/releasenotes/notes/drop-oslo_db-use_tpool-48542a28d10e1bae.yaml
@@ -0,0 +1,8 @@
+---
+upgrade:
+  - |
+    Experimental support for thread pooling of DB API calls has been removed.
+    This feature was first introduced in the 2014.2 (Juno) release but has not
+    graduated to fully-supported status since nor was it being used for any
+    API DB calls. The ``[oslo_db] use_tpool`` config option used to enable
+    this feature will now be ignored by nova.