I am trying to download Oracle Data Access Components. Some of the components are named as XCopy version. I know that XCopy is a command but what exactly does it mean in this context ?
it appears to be referring to the same Xcopy command you are, and will do an Xcopy deployment, instead of using OUI. From the documentation (this, for example):
Administrators use XCopy to deploy Oracle Data Provider for .NET to large numbers of computers for production deployments. The XCopy has a smaller installation size and fine-grain control during installation and configuration than Oracle Universal Installer.
The install.bat for the 12c ODAC installer is doing:
xcopy asp.net %2 /E /F /R /Y >> %2\install.log
etc., for each component, where %2 is the path supplied to the installer, e.g. c:\oracle.
来源：https://stackoverflow.com/questions/19949720/what-is-an-xcopy-version