The company I work for has a lot of data on JIRA, and is using version 4.0.2. I have tried following these steps to upgrade to 4.4.5 (I am attempting gradual upgrades), but the steps do not match the architecture that is used in the version that I am using. (i.e. there is no dbconfig.xml file or jdbc driver jar file to be found in the home or installation directories). I tried skipping steps that weren't applicable, but the resulting installation did not run.
Additionally, I tried copying files from the existing install, not overwriting anything, to the new install, and was presented with, "The requested resource () is not available" when going to localhost:8080.
We renewed our license earlier this year, but are finally now trying to upgrade. I am experimenting on a different computer with a trial license.
