If you try to run setup.exe directly on Windows 10, it will likely fail immediately. Here is the cheat sheet to getting it installed:
Before we dive into the download, it is crucial to understand the technical impossibility: oracle 8i download for windows 10 64bit link
Searching Google for a simple "oracle 8i download for windows 10 64bit link" will lead you to shady forums, torrents, or malware-infected archives. Do not download from random file-sharing sites. Instead, use the legal source below. If you try to run setup
Result: You now have a fully functional Oracle 8i database running on Windows 10 (inside a Windows XP VM). You can connect using SQL*Plus or a legacy version of SQL Developer. Searching Google for a simple "oracle 8i download
Open a command prompt in the VM and type:
sqlplus system/manager@orcl
You’ll see the classic SQL*Plus: Release 8.1.7.0.0 banner.