Met INS-08101 when I installed Oracle database 19c on Oracle Linux 8 update 2.
[INS-08101] Unexpected error while executing the action at state: 'supportedOSCheck'
INS-08101 means that there's no CV_ASSUME_DISTID, an environmental variable set by the verification program, which is an unexpected situation. We should set one for it.
To solve this error 'supportedOSCheck', we can set environment variable CV_ASSUME_DISTID, either temporarily or permanently.
At runtime, we can export the variable.
[oracle@ora19c dbhome_1]$ export CV_ASSUME_DISTID=OEL8.1
I found that any distribution id is acceptable as long as it's valid.
Or we can uncomment the line containing the variable in the CVU configuration file. It's around line 20.
[oracle@ora19c dbhome_1]$ vi $ORACLE_HOME/cv/admin/cvu_config
Just remove the leading # (pound sign) from the line like this:
The fallback value can also work.
I recommend the latter solution, the permanent way to solve INS-08101, because you also need the variable to patch the software afterwards.
Further reading: How to Install Oracle 19c Software Only with Silent Mode