Fixed upstream in https://github.com/orafce/orafce/commit/f3b8b20ee634c86c14b3f84a28f94bd54c28d152

--- a/sql/dbms_pipe_session_A.sql
+++ b/sql/dbms_pipe_session_A.sql
@@ -159,7 +159,7 @@ BEGIN
 	PERFORM dbms_pipe.send_message(pipename);
 END; $$ LANGUAGE plpgsql;
 
-\set ECHO all;
+\set ECHO none
 
 SELECT createImplicitPipe();
 
--- a/sql/dbms_pipe_session_B.sql
+++ b/sql/dbms_pipe_session_B.sql
@@ -80,7 +80,7 @@ BEGIN
 	RETURN result;
 END; $$ LANGUAGE plpgsql;
 
-\set ECHO all;
+\set ECHO none
 
 -- Receives messages sent via an implicit pipe
 SELECT receiveFrom('named_pipe');