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Home -> Community -> Usenet -> c.d.o.server -> Re: any way to limit the number of iterations of a loop?
A copy of this was sent to jeff grant <nettmaster_at_my-dejanews.com>
(if that email address didn't require changing)
On Thu, 25 Feb 1999 02:04:57 GMT, you wrote:
>Hi there-
>
>I was just wondering if anyone knows of a parameter (or something similar) for
>8.0.5 that allows you to set a maximum number of iterations on a loop,
>regardless of the logic in the loop.
>
>Basically, I have a developer that created a 5 line loop that had faulty
>logic (basically, while(true) loop;) and ran for about 6 hours before it
>could be shut down, sucking about 80% of the CPU in the process.
>
no there is not... but you can use profiles on your developers to limit the amount of various resources they can use. for example (this modifies the DEFAULT resource, might want to create a developer profile and assign it to them)
SQL> select * from dba_profiles;
PROFILE RESOURCE_NAME LIMIT ------------------------------ -------------------------------- DEFAULT COMPOSITE_LIMIT UNLIMITED DEFAULT SESSIONS_PER_USER UNLIMITED DEFAULT CPU_PER_SESSION UNLIMITED DEFAULT CPU_PER_CALL UNLIMITED DEFAULT LOGICAL_READS_PER_SESSION UNLIMITED DEFAULT LOGICAL_READS_PER_CALL UNLIMITED DEFAULT IDLE_TIME UNLIMITED DEFAULT CONNECT_TIME UNLIMITED DEFAULT PRIVATE_SGA UNLIMITED
9 rows selected.
SQL> declare
2 n number;
3 begin
4 for i in 1 .. 100000 loop 5 n := i*2+5; 6 end loop;
PL/SQL procedure successfully completed.
SQL> save a repl
Wrote file a
SQL> alter profile default limit cpu_per_session 1; Profile altered.
SQL> connect tkyte/tkyte
Connected.
SQL> @a
declare
*
ERROR at line 1:
ORA-02392: exceeded session limit on CPU usage, you are being logged off
so, when I exceeded the default -- boom, i'm gone..
>Anyone have a way of dealing with something like this?
>
i had a programmer once write a small program (to see what would happen) that looked like:
while(1) fork();
try killing that one :)
>
>---------------------------------------------
>jeff grant, it manager, nettwerk productions
>vancouver, bc, canada
>http://www.nettwerk.com http://www.nettweb.com
>
>-----------== Posted via Deja News, The Discussion Network ==----------
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Thomas Kyte
tkyte_at_us.oracle.com
Oracle Service Industries
Reston, VA USA
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