Downloading and installing Oracle Client 8.1.7 on modern Windows is a trip back in time. While possible with the symcjit fix and compatibility settings, it is highly recommended to migrate to a newer client version if your database version permits it.
: A version 8.1.7 client can typically connect to Oracle 8.1.7, 9.2, and 10g databases, but it may struggle with modern 12c or 19c environments. Installation & Component Details Oracle Client 8.1.7 Install download oracle client 8.1 7 windows
provider is deprecated. Microsoft and Oracle recommend switching to Oracle Data Provider for .NET (ODP.NET) , which does not have these legacy requirements. Check Environmental Variables : Ensure your Oracle client folder is added to your Windows variable so applications can locate the necessary Downloading and installing Oracle Client 8