Dizwell Informatics

News from Nowhere

Fedora 26 arrives…

Fedora 26 has just been released (I downloaded it even before Distrowatch mentioned it was available, so for once my timing was impeccable!) The release notes are available here, explaining what has changed since the previous version. Combining that with the other changes listed here and here, I have to say that most of the changes seem under-the-hood kind of stuff -though the increment in gcc version sounds like it could be trouble, and the default wallpaper is surprising in its bland twee-ness! The icon for the file manager turns blue, as well. Don’t get too excited!!

As usual, the main question in my mind when a new version hits the streets is: does it work with Atlas (and hence Oracle 12cR1 and 12cR2)?

The news on that is both good and bad: the good news is that the linking stage completes entirely without error (meaning that a software-only install works fine). But the bad news -really bad!- is that when the installer tries to create a database… nothing happens. Even if you try and launch the Database Configuration Assistant manually (type: dbca), it pops up its splash screen and then just sits there doing nothing. No errors are either reported or logged, though. The thing simply sits there idle, for no apparent reason.

So, I expect you could do a software-only install and then create a database using good old SQL*Plus and the ‘create database…’ command, but that’s obviously not the Atlas way of doing things… and I’ll therefore be working on this in the next day or two and, hopefully, get things running ‘properly’ once more; but I haven’t had a chance to try and diagnose this as yet, so I make no promises on that score!

Anyway: despite this failure to run Oracle, and with something approaching sheer recklessness, I nevertheless decided to do an in-place upgrade of my existing Fedora 25 desktop. It’s easy enough to do. First, I made sure everything on my version 25 PC was up-to-date:

sudo dnf upgrade --refresh

Next, I had to allow DNF to do system upgrades by installing a plugin that gives it the necessary functionality:

sudo dnf install dnf-plugin-system-upgrade

After that, just check that an in-place upgrade is actually possible:

sudo dnf system-upgrade download --refresh --releasever=26

If that reports unresolvable dependencies, then the upgrade won’t actually take place (unless you add the –allowerasing option, but then you will lose some software that’s already been installed, which may or may not be acceptable. I had to agree to lose my installation of the Chromium browser, for example: no great hardship these days, as I generally use Vivaldi, though as it turns out, it re-installs a more up-to-date version in its place anyway). But otherwise, it will download a lot of software (2.6GB in my case) and get your PC in a state ready to upgrade. Before finishing things off, best you take a backup of everything you care about: the next command is the point of no return:

sudo dnf system-upgrade reboot

…which actually does the business (and starts off with a reboot, so that the upgrade process takes place essentially in a command line-only environment). My upgrade took a while (my Internet connection is not great at the moment), but otherwise went well. All my apps appear to be running normally afterwards, too… so, no harm done (that I can tell!)