In orachk 20.2.0 Beta, and below it reports that Temporary location is not configured for auto clean
I have added a file to /etc/tmpfiles.d, much in the same way it is done on Exadata 19.3, but it appears the ORAchk only expects the entries in /usr/lib/tmpfiles.d, which per the documentation should not be changed, and it will be overwritten with OS updates.
I verified that this isn't reported on the Exadata 19.3 software with 20.2.0 Beta so maybe there is some difference in the way the ORAchk is working as compared to EXAchk.
Regards,