问 SQL - Oracle 11g - PL/SQL -触发器编译错误

EN

我在运行这段代码时遇到了问题。它说触发器是用编译错误创建的，但没有解释错误所在，也没有给出任何输出。下面是我得到的代码和错误。我使用的是Oracle11gSQL，使用的是PL/ R1。

CREATE OR REPLACE TRIGGER checkRecommendedAge
BEFORE INSERT OR UPDATE ON Loan
FOR EACH ROW
DECLARE
    borAge number;
    ex     exception;
BEGIN
    SELECT count(*) INTO borAge
    FROM Loan
    WHERE dateOut =: new.dateOut;
    IF borAge < 18 THEN
        dbms.output.put_line('Row added to Book table succesful');
        raise ex;
    END IF;
    EXCEPTION
    WHEN EX THEN
    raise_application_error("Error");
/

错误：

    Warning: Trigger created with compilation errors.
SQL> SHOW ERRORS
Errors for TRIGGER CHECKRECOMMENDEDAGE:
LINE/COL ERROR
-------- -----------------------------------------------------------------
0/0      PLS-00801: internal error [ph2csql_strdef_to_diana:bind]
6/2      PL/SQL: SQL Statement ignored
7/7      PL/SQL: ORA-06544: PL/SQL: internal error, arguments: