diff --git a/aodh/storage/__init__.py b/aodh/storage/__init__.py
index bc2ae837c..87b207689 100644
--- a/aodh/storage/__init__.py
+++ b/aodh/storage/__init__.py
@@ -39,11 +39,6 @@ OPTS = [
                help='The name of the replica set which is used to connect to '
                     'MongoDB database. If it is set, MongoReplicaSetClient '
                     'will be used instead of MongoClient.'),
-    cfg.IntOpt('db2nosql_resource_id_maxlen',
-               default=512,
-               help="The max length of resources id in DB2 nosql, "
-                    "the value should be larger than len(hostname) * 2 "
-                    "as compute node's resource id is <hostname>_<nodename>."),
     cfg.StrOpt('alarm_connection',
                secret=True,
                default=None,