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From "Jonathan Reichhold" <reichh...@singingfish.com>
Subject Re: Which JDK to use under Linux?
Date Tue, 13 Jun 2000 16:20:04 GMT
This sounds like the connections aren't being freed in oracle.  Look at the
number of open connections in Oracle when things slow down.  I'd wager that
you have a large number of connections open at this point.  I had a similar
problem with an Oracle box that killed all kinds of processes on the box.
Oracle uses a large amount of system resources for each connection.  I could
be wrong, but it is worth checking to see if the problem is Oracle and not
Tomcat.  Tomcat is actually holding up quite well under a heavy load that
I'm putting on it.

Jonathan
----- Original Message -----
From: "Christoph Kulla" <kulla@metabox.de>
To: "TOMCAT User" <tomcat-user@jakarta.apache.org>
Sent: Tuesday, June 13, 2000 9:02 AM
Subject: Which JDK to use under Linux?


> Hi,
>
> I've setup a medium size servlet application via tomact with heay use of
an
> oracle database. Tomact and the oracle System are on the same system. The
> performance is ok, but after a few hours of work (10 or more users)
> the servlets throw an out of memory exception. Also we encounterd a heavy
> system load after a while, without any user interaction. We suppose that
this
> is the java garbage collector. But it seems to never end or to reduce it
load.
>
> We are using the IBM JDK 1.1.8  without thread pooling. Are there any
> adjumenst
> to be made (maximum heap or stack size). What are your settings? Wich JDK
are
> you using?
>
> Regards
>
> Christoph
> --
>
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mailto:kulla@metabox.de |
> | Met@box AG
http://www.metabox.de |
> | Daimlerring 37
|
> | 31135 Hildesheim             Phone: +49-5121-7533-0  |
> | Germany                                             Fax:
+49-5121-7533-78 |
>
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