This is just a short blog post to ensure I will find the necessary information when somebody asks me again.. In case you plan to do an Exadata upgrade to OL7 and to Oracle 19c, the below links are the most important ones you should start with.
- Exadata Database Machine – Maintenance Guide: Updating Exadata Software
- MOS Note: 2542082.1 – 19c Grid Infrastructure and Database Upgrade steps for Exadata Database Machine running on Oracle Linux
- Fred Denis’ “An Unknown DBA” Blog with lots of tips and tricks and more