Data Redaction – Virtual Column Bug Fixed In Oracle 12.2
If you’ve used virtual columns with data redaction you may have encountered the issue where the redacted data is visible through the virtual column. It is a known bug and with the release of Oracle 12.2 it has been fixed! I think I saw somewhere on MOS a note regarding this bug, but it seems it has been revoked as internal bug (couldn’t find it).
I’ve wrote couple of blog posts regarding Data Redaction