diff --git a/lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb b/lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb
index 85031fb45..e16e2dc95 100644
--- a/lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb
+++ b/lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb
@@ -330,7 +330,10 @@ def self.new_connection(config)
           database
         end
         OCI8.properties[:tcp_keepalive] = true
-        OCI8.properties[:tcp_keepalive_time] = 600
+        begin
+          OCI8.properties[:tcp_keepalive_time] = 600
+        rescue NotImplementedError
+        end
         conn = OCI8.new username, password, connection_string, privilege
         conn.autocommit = true
         conn.non_blocking = true if async