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From Torben N├╝rnberg Rasmussen <>
Subject Re: class loader
Date Wed, 10 Oct 2001 18:22:54 GMT

----- Original Message -----
From: "Jay Wright" <>
To: <>
Sent: Wednesday, October 10, 2001 6:56 PM
Subject: class loader

> Hopefully this is an easy question that has been worked over many times.
> I've just switched from Resin to Tomcat 4.0.  I'm currently testing on
> windows, though we'll deploy on Solaris.  Everything looks great so far
> I'm overall very pleased, but have stumbled into one problem:  the
> Class.forName(<classname>) is unable to find a class.  In this case, it is
> oracle.jdbc.driver.OracleDriver.  As I've ported the code from Resin to
> Tomcat, I know my code is okay, but I wanted to make sure that I'm
> with the Tomcat container.
> I've placed the classes12.jar file (the oracle driver) in
> %CATALINA_HOME%/lib.  I've done nothing else, such as add it to a
> Do I need to explicitly set it in the classpath?  Is there a better
> for it?  (I've also tried %CATALINA_HOME%/server/lib and
> %CATALINA_HOME%/webapps/<myapp>/WEB-INF/lib).
I think the right solution is to place the jar-file in the
%CATALINA_HOME%/webapps/<myapp>/WEB-INF/lib directory.
That worked for me.
Have you tried to restart the tomcat server? It seems that sometimes that is
necessary. I can't find out when it is necessary and when not.

Torben Rasmussen.

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