Creating a trigger inside a trigger
- From: "Peter Teoh" <htmldeveloper@xxxxxxxxx>
- To: "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 4 Mar 2008 14:34:47 +0800
I have not been successful in creating a trigger via the following
statement (using execute immediate).
CREATE OR REPLACE TRIGGER startup_trigger
AFTER STARTUP ON DATABASE
BEGIN
begin
execute immediate 'CREATE OR REPLACE TRIGGER shutdown_trigger
BEFORE SHUTDOWN ON DATABASE BEGIN do_nothing_proc(); END;';
exception
when others then
dbms_output.put_line (sqlcode||sqlerrm);
end;
END;
/
show errors
list
Problem is how to create the trigger inside a trigger?
If I relocate the execute immediate statement into another stored
proc, and execute the stored proc directly, then no problem in
creating the trigger. But if I called the stored proc via the
trigger, it is not working,
with NO ERROR indicated anywhere at all. Funny thing is no matter
how deeply embedded the stored procedure that create the trigger is
(sp A->sp B->sp C->sp D->calling create trigger, and then using
trigger A to call sp A), Oracle seemed to remember / recognize the
deeply embedded trigger, and refuse to create it inside another
trigger.
Any new insights?
--
Regards,
Peter Teoh
--
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