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Date: Wed, 01 Nov 2006 19:45:53 +0100
From: Rainer Jung <rainer.jung@kippdata.de>
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To: Tomcat Users List <users@tomcat.apache.org>
Subject: Re: Webapps that run on 5.0.28 but not 5.5.x?
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Apart from the changes in suggested deployment strategies and ressourec
definitions there's something to be careful:

Upgrading to TC 5.5 and upgrading from Java 1.4 to Java 5 are two
different things. As long as you do only the first, chances are good,
that you get the webapp to run without code changes.

An upgrade to Java 5 should be tried only after you get the webapp to
run under TC 5.5 with Java 1.4.

Regards,

Rainer

Glen Mazza schrieb:
> Hello,
> 
> Question:  How common is it for a webapp to be able to run on Tomcat
> 5.0.28 but *not* 5.5.20?
> 
> For the installation of a commerical web application that calls for
> installation of Tomcat 5.0.28, I'm inclined to just go ahead and use the
> 5.5 series of servlet containers.  Customer support is concerned that
> Tomcat 5.5 will not work (or at least has not been tested on the new
> version).  My thinking is that:
> 
> 1.) Both containers implement the same specifications, so their
> development team would *really* have to be coding obscurely, bending
> over backwards to try to trip up the 5.5 servlet container, to be able
> to manage to build a webapp that will run on 5.0.28 but not 5.5.20.
> 
> 2.) Further, it would require an extremely talented development team to
> be able to create a webapp that will run on 5.0.28 but not 5.5.20, but
> paradoxically, if they had that level of talent they would *not* build
> an application anyway that will work on 5.0.28 but not 5.5.20.
> 
> Is my logic here correct or faulty?  To what degree is "This webapp will
> work on 5.0.28 but not 5.5.20" an old wives' tale?
> 
> Thanks,
> Glen
> 
> 
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