Ajust table rows after after modifications (Delete, Insert Update) on Oracle - oracle

Question

On table "Types", the rows order shall be controled by the field "ordem".
After any data modifications(Delete, Insert or Update), the others rows should be ajusted to assure correct exbitions of the content.
To implement this funcionality, I tried to code a trigger to correct the values in two similar ways (I, II).
CREATE TABLE TYPES (
ID NUMBER PRIMARY KEY,
ARG_1 VARCHAR2(20) NOT NULL,
ARG_2 VARCHAR2(20) NOT NULL,
ORDEM NUMBER NOT NULL
);
-----------------------------------------------
-- I
-----------------------------------------------
CREATE OR REPLACE TRIGGER TGR_TYPES
AFTER INSERT OR UPDATE OR DELETE ON TYPES
DECLARE
V_NORDEM NUMBER := NEW.ORDEM;
CURSOR C_TYPES IS
SELECT ID, ORDEM
FROM TYPES
WHERE ORDEM >= V_NORDEM;
BEGIN
IF UPDATING OR INSERTING THEN
BEGIN
FOR R_TYPE IN C_TYPES LOOP
UPDATE TYPEA SET ORDEM = (ORDEM + 1) WHERE ID = R_TYPE.ID;
END LOOP;
END;
ELSE
DECLARE V_ORDEM NUMBER := 0;
BEGIN
FOR R_TYPE IN C_TYPES LOOP
UPDATE OSP_TP_ADDR_COMPLEMENTOS SET ORDEM = (V_ORDEM + 1) WHERE ID = R_COMPLEMENTO.ID;
END LOOP;
END;
END IF;
END;
/*
ERROR ON COMPILE:
ORA-04082: referências NEW ou OLD não permitidas nos gatilhos de nível de tabela
04082. 00000 - "NEW or OLD references not allowed in table level triggers"
*Cause: The trigger is accessing "new" or "old" values in a table trigger.
*Action: Remove any new or old references.
*/
-----------------------------------------------
-- II
-----------------------------------------------
CREATE OR REPLACE
TRIGGER TRG_TYPES
AFTER INSERT OR UPDATE OR DELETE ON TYPES
FOR EACH ROW
BEGIN
IF UPDATING OR INSERTING THEN
BEGIN
FOR TP IN (
SELECT *
FROM TYPES
WHERE ORDEM >= :NEW.ORDEM
) LOOP
UPDATE TYPES SET ORDEM = (ORDEM + 1) WHERE ID = TP.ID;
COMMIT;
END LOOP;
END;
ELSE
DECLARE V_ORDEM NUMBER := 0;
BEGIN
FOR TP IN (
SELECT *
FROM TYPES
ORDER BY ORDEM
) LOOP
UPDATE TYPES SET ORDEM = (V_ORDEM + 1) WHERE ID = TP.ID;
END LOOP;
END;
END IF;
END;
/*
ERROR ON UPDATE:
UPDATE TYPES
SET ORDEM = 14
WHERE ID=26
Relatório de erros -
ORA-04091: a tabela TYPES é mutante; talvez o gatilho/função não possa localizá-la
ORA-06512: em "", line 9
ORA-04088: erro durante a execução do gatilho ''
*/
I expect one solution to assure the trigger operation or other approach to the integrity of the order field. I have thinking about tring the Index-Organized Table structure, but not sure.