create or replace
TRIGGER test_trig
AFTER CREATE
ON SCHEMA

DECLARE
--oper ddl_log.operation%TYPE;
v_object_type varchar2(100);
BEGIN

  SELECT  ora_dict_obj_type
  into v_object_type
  FROM DUAL;
  If upper(v_object_type)='TABLE' then
      SEC_ADMIN.my_package.my_proc();
  end if;
END test_trig;