After conducting a thorough search, we found that it is challenging to find a direct download link for Oracle 8i that is compatible with Windows 10 64-bit. The software is no longer available on the official Oracle website, and other websites that claim to provide the download link may pose a risk to users' systems due to potential malware or viruses.
no longer host 8i, some historical archives exist for educational or research purposes: Internet Archive : You can find some versions like Oracle 8i Client Release 3 Enterprise Edition preserved on Archive.org Oracle Software Delivery Cloud oracle 8i download for windows 10 64bit link
If you have an active Oracle support contract, you can log a Service Request (SR) on My Oracle Support to request the media. After conducting a thorough search, we found that
If you must use Oracle 8i for legacy applications, experts suggest the following workarounds: Oracle 8 client in Windows 7 64-bit If you must use Oracle 8i for legacy
: Some users attempt to use 10g or 11g 32-bit clients to connect to 8i databases, but success is limited on 64-bit systems. Archived Media