This guide covers some tweaks that are needed to install oracle client (full client, not instant) to Ubuntu. Oracle does not support Ubuntu and installation does not work out of the box, however it is still possible to do it with a couple workarounds.
Note: this is not about the instant client. For instant client, read other guides, typically involving conversion of rpm packages into deb.
- Run the installer. It will warn you that the OS is not supported. You can ignore this warning and continue.