Upgrading to the latest Oracle version is very beneficial for businesses. One of the reason is that the Oracle lifetime support policy only follows their latest version. This feature is not additional in old versions i.e. 11G, 12C and 18C and might be you can face compatibility issue either with browser or device. Visit: https://www.chetu.com/blogs/technical-perspectives/oracle-databases-main-differences-12c-18c-and-19c.php