[thelist] Perl script gives "document contains no data" error

Algian algian at algian.com
Sun Aug 5 07:09:40 CDT 2001


Dear evolters,

I have a little problem with a perl script which gives me a "document
contains
no data" error. I've analysed as many of the possible problems as i can
think of but none seem to kill the error. This error appears at sporadic
intervals
on the whole web site. most of the script access a MySQL database so i
thought
that might have been the problem. However i have a page on the site which
reloads every 60seconds and half the times it loads fine and some other
times
it just gives me the DCND error. However it does the exact same things every
time
it reloads, same querys to DB, same calls to same files, etc. I've tried
using
use CGI::Carp qw(fatalsToBrowser); but it gives me nothing, nada, zero.
The refresh of the page is done with javascript (setTimeout) so it's not
possible
that it starts to reload the page before the perl script is finished. I'm
also not using
locks on the files it accesses so the problem can't come from there.
If anyone is curious to see this magical and mystical bug the URl is
www.algian.com/chat/daily/frames/ and you'll need to login with the
username: guest
and the password: guest.
As you'll see it'll keep refreshing for a while and then all of a sudden no
more. Sometimes
it doesn't even load the frames pages.
Thanks a lot
Ale

PS it's really wierd.

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Alessandro Giannone
Web Anomaly Creator
Edinburgh University
Department of Science & Engineering
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