We've had a problem with perl interpreters and memory leaks on IIS5. The BB5
installation had set the number to 4 instead of 12 and I found reducing the
reload count reduced the number of errors. I doubt this is true for UNIX
based systems, but it's worth looking into how perl is running.
Matt Elton
University of Northumbria
Newcastle upon Tyne
England
----- Original Message -----
From: "Tim Bentley" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, December 02, 2002 12:04 PM
Subject: Re: 500 - Internal Server Error
> Hi,
>
> Regrettably it's not a specific platform thing - Solaris 8 + MySQL +
> 5.5.0 L1 does it too, but not as much as you've reported. No answer
> that I can see on the BB knowledgebase. I think that if the problem
> lies anywhere, it's Apache and it's MacClients, but if you've already
> bootsed that, I'm at a loss.
>
> Anyone else got an idea?
>
> Tim
>
> Herta Van den Eynde wrote:
> > Environment: linux + oracle + bb 5.5.1 level3
> >
> > Does anyone know what causes the "500 - Internal Server Error" messages
in
> > blackboard? They're usually short lived, so if the user waits a few
seconds
> > and hits the reload button, he usually is OK again.
> > (On linux you can count the errors by means of the following command:
> > # grep " 500 " /usr/local/blackboard/httpd/logs/access_log | wc -l
> > We're getting anywhere between 400 to 900 a day.)
> >
> > I've browsed Blackboard's support pages. They are aware of the problem,
but
> > don't seem to have a clue as to what causes it.
> >
> > Initially I thought it might be a resource problem, so I bumped up
Apache's
> > MaxClients in httpd.conf, and increased the Oracle listener queue. All
to
> > no avail. I've checked bbuser process limits, system wide maximum
number of
> > tasks, monitored the system, but there are no apparant bottlenecks.
> >
> > Any ideas?
> >
> > Herta
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