ENABLE_RULE

PROCEDURE ENABLE_RULE (
    rule_name          VARCHAR(256));

obclient> CALL DBMS_UDR.ENABLE_RULE('rule1');
Query OK, 0 rows affected

obclient> SELECT 1 FROM DUAL;
+-------+
| ? + 1 |
+-------+
|     2 |
+-------+
1 row in set