Ok I am getting to the bottom of this but my hosting provider wish to argue. They moved me over a month ago from tomcat 5 to 6 and I remember the installation was not clean because I had some stuff left over from the tomcat 5 in my new tomcat 6.

I downloaded tomcat 5 and viewed the root directory layout which looks exactly like tomcat 5 and my current tomcat layout from provider. Clearly I am meant to have a lib dir in root if this is tomcat 6 and NOT a common/lib

--------------------------------------------------
From: <[email protected]>
Sent: Wednesday, June 16, 2010 3:50 AM
To: "Tomcat Users List" <[email protected]>
Subject: Re: org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'

production is tomcat 6.0.20 thanks for the reply. had to call it a night so sorry for delay in reply.

--------------------------------------------------
From: "Mark Eggers" <[email protected]>
Sent: Wednesday, June 16, 2010 3:16 AM
To: "Tomcat Users List" <[email protected]>
Subject: Re: org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'

Are you developing on 6.0.x but deploying on 5.?.x (5.0 or 5.5)?

What version is running in production?

--- On Tue, 6/15/10, [email protected] <[email protected]> wrote:

From: [email protected] <[email protected]>
Subject: org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
To: "Tomcat Users List" <[email protected]>
Date: Tuesday, June 15, 2010, 1:11 PM
I have tried to check why this
exception is thrown in production but not development....

The difference between production snd development server
is:

development) put mysql jar into CATALINA/lib (tomcat
6.0.26)

production) choice of common/lib or share/lib

exception is thrown by hibernate which is wrapping the
exception from realm





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