| how to use raise_application_error? [message #371847] |
Wed, 13 December 2000 11:00  |
wyshuai
Messages: 13
Registered: December 2000
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Junior Member |
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I once defined a error code bymyself,and then use
raise_application_error(-20001,'mytext');
but error occurs when the trigger is fired.
exmple:
create or replace trigger tr_1
before update
on t_1
for each row
declare
update_error exception;
begin
raise update_error;
exception
when update_error
then raise_application_error(-20001,'unable to
update the table outside the system!';
end;
/
If I donnot use the raise_application_error(-20001,'unable to update the table outside the system!';
,no error occurs.What can i do if i want to prevent t_1 from updating?
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