diff --git a/lib/active_record/connection_adapters/oracle_enhanced_adapter.rb b/lib/active_record/connection_adapters/oracle_enhanced_adapter.rb
index 397759d60..bdb50ffee 100644
--- a/lib/active_record/connection_adapters/oracle_enhanced_adapter.rb
+++ b/lib/active_record/connection_adapters/oracle_enhanced_adapter.rb
@@ -403,6 +403,10 @@ def disconnect! #:nodoc:
         @connection.logoff rescue nil
       end
 
+      def discard!
+        @connection = nil
+      end
+
       # use in set_sequence_name to avoid fetching primary key value from sequence
       AUTOGENERATED_SEQUENCE_NAME = "autogenerated".freeze