Have you successfully installed 19c, or did you rage quit at the "prerequisite checks"? Let me know in the comments below.
Do not just double-click it. Oracle 19c requires specific kernel parameters ( shmmax , semmsl ), a dedicated oracle user, and a specific directory structure ( /u01/app/oracle ). If you try to install this on a fresh Ubuntu box without reading the pre-install docs, the installer will laugh at you (silently, via error code INS-06001 ). Oracle 19c is free to download and use for development. You can build applications, learn SQL, and test PL/SQL packages until your heart is content. You only pay for a license when you go to Production . oracle database 19c download
You’ve heard the legends. It is the Long Term Support release. The "terminal" release of the 12.2 family. The last bastion of stability before the cloud-native 23c. You need it for your on-premise data warehouse, your mission-critical transaction system, or just to prove to your boss you can actually install it. Have you successfully installed 19c, or did you