On 2012/11/23 I already wrote about my way to install Tomee on Linux. Today we have Tomee 1.7.1 and I want to write how I upgrade. First of all I unpack the new version in the /opt directory. Now I do the following steps.
I copy the following files from the current version to the new version:
I have a list of files that I changed. I re-apply these changes again.
Copy all your deployed applications to the new version.
Now applications are hosted in the new version of Tomee.