Here is another excellent article about the cost of application servers, and why a paradigm shift is needed with lighter-weight alternatives:

http://www.tomcatexpert.com/blog/2010/06/03/migrating-jee-applications-tomcat-motivation-migrating

Interesting note: the author used to work at Bea, so he definitely knows what he is talking about;-)

Check out http://www.tomcatexpert.com/blog/2010/07/07/how-migrate-jee-applications-tomcat for a nice discussion on how to migrate from jee to a light-weight alternative like Tomcat - with Atomikos for JTA if needed.

Check out this cool blog entry on how this can all work together.

DISCLAIMER: the suggested solution has not yet been verified by Atomikos…

2018 UPDATE: the link seems to be broken by now - apologies for that.

Great news: we now have over 10K downloads per month (as per January 2010), which is quite impressive given our niche market focus. This is over 10 times more than 6 months ago… Atomikos keeps on growing!

Here is an interesting post at JBoss about configuring Hibernate, Infinispan's caching and Atomikos JTA (among other JTA implementations). Sample code and configuration files are included.

Regards