Tomcat: LifecycleException when deploying

Question

I just downloaded the Tomcat 7.0.23 package on my Ubuntu 11.10.

I followed the instructions on a Google API website to deploy their example webapp. It basically con

Answer 1

Might be super trivial but worth a check prior to waste some time.

At my case the mysql service was down.

When you have a java app including JPA / Hibernate it is checking the database connection on startup. Just found out by looking into the looks where it had an entity manager error.