Why doesn't my servlet load on TomCat 6.0.18 but loads fine on 5.5

Question

I have a development environment where i use TomCat 5.5 and my application works fine. As soon as a transfer everything to a deployment server, that's running TomCat 6.0.18, a servlet class called DeviceComm doesn't seem to load. The error that i'm getting in "Ressource not available".

I have brought modifications to this class recently. The transfer was only an update, everything was working fine before. Basically, the question is: what can make a servlet not work on version 6 of tomcat and work fine on 5.5 ?

Thanks!

Answer 1

Make sure you just did not copy your server.xml file from 5.5 to 6.0. There are quite a few subtle differences in 6.0 that makes 5.5 server.xml to not load.

Make sure that you apply your configuration changes to 6.0 template that comes with tomcat distribution.

Answer 2

That can be caused by everything. Read the server startup logs. It's located in the /logs folder with the filename domainname.yyyy-MM-dd.log. It'll contain any exceptions/problems which are occurred during server startup and servlet initialization.

Answer 3

Could also be a JDK version mismatch if your Tomcat 5.5 runs on Java 5 and the Tomcat 6 runs on Java 6

Answer 4

Do you have any resource when application startups?

Please parse it!

Answer 5

Problem solved! The deployment .class files were not the same as the ones on the development environment. Bug in SourceSafe!