- The upgrade was mostly normal, but I had to unhold the openjdk package in order for `do-release-upgrade` to run:
```console
# apt-mark hold openjdk-8-jdk-headless:amd64 openjdk-8-jre-headless:amd64
```
- In [2022-11]({{< relref "2022-11.md" >}}) an upstream Java update broke the DSpace 6 Handle server so we will have to pin this again after the upgrade to Ubuntu 22.04
- After the upgrade I made sure CGSpace was working, then proceeded to upgrade PostgreSQL from 12 to 14, like I did on DSpace Test in 2023-03
- Then I had to downgrade OpenJDK to fix the Handle server using the ones I had previously downloaded for Ubuntu 20.04 because they no longer exist on Launchpad: