I look after a piece of propriety software which is now no longer
supported by the supplier, and I need some advice about upgrading the
surrounding software.

It currently runs in this environment:
Linux: 2.4.9-e.25
Apache HTTP server : 1.3.27
Tomcat 3.3.1a
Oracle: 9.2.0.5

and we are looking to upgrade Linux to 2.6.9-5.ELhugemem (Red Hat
3.4.3-9.EL4).

Would there be any problems with Tomcat and Apache?
They were supplied with the application (which we don't have source
for)
and we'd rather leave them alone.
I can't find anything on this topic on the Apache site.
Thanks in advance for any help.
Peter Croft