Cara, desconsidere a anterior, faltou inicializar a collection
CREATE OR REPLACE TRIGGER TESTE AFTER CREATE ON DATABASE
DECLARE
V_ID NUMBER;
V_SQL DBMS_STANDARD.ora_name_list_t;
BEGIN
V_ID := SYS.SQL_TXT(sql_text => V_SQL);
FOR DD IN 1..V_SQL.COUNT LOOP
DBMS_OUTPUT.put_line(V_SQL(DD));
END LOOP;
EXCEPTION WHEN OTHERS THEN
DBMS_OUTPUT.put_line(SQLERRM);
END;