diff --git a/activerecord/test/connections/oracle.rb b/activerecord/test/connections/oracle.rb
index 70e92b142409c202c6e228356b9c894fbcd8e700..dc64f7c5fc748370ec9e218ef72530f7977f569a 100644
--- a/activerecord/test/connections/oracle.rb
+++ b/activerecord/test/connections/oracle.rb
@@ -1 +1,7 @@
 ENV['ARCONN'] = 'oracle'
+
+# uses oracle_enhanced adapter in ENV['ORACLE_ENHANCED_PATH'] or from github.com/rsim/oracle-enhanced.git
+require 'active_record/connection_adapters/oracle_enhanced_adapter'
+
+# otherwise failed with silence_warnings method missing exception
+require 'active_support/core_ext/kernel/reporting'