With TOAD for Oracle Beta 16.3.162.1999 & 16.3.160.1997, bug with comparing multiple schemas between 2 DB oracle. After writing results on temp file, a error message is "Microsoft MSXML is not installed", and stops the comparisons. Only if schemas have a lot of objects, not with a few tables.
With TOAD 16.2 is OK.
Thanks. I can reproduce that and will fix. It's kind of a bogus error message - you don't need to install anything.