I expect you can forget anyone posting such to this newsgroup for
several reasons:

1) 8.1.7 is desupported.
2) 8.1.7.0 is no longer available for download and, I imagine, for sale
through any Oracle sales office (this, of course, you know).
3) To arrive at 8.1.7.4 from 8.1.7.0 requires a patch from Metalink,
and postiing such violates any support agreement between Oracle and the
party you would like to have post such an item, meaning, no one is
about to post any patchset from Metalink here, whether it is available
or not, simply to throw away a perfectly good support contract.
4) The size of the distribution makes it almost impossible to 'post'
here, much less anywhere else.
5) You provide no valid reason for wanting this particular release.

Your idea of this newsgroup supplying software to those who want it is
in error.  You MAY be lucky and find an Oracle Sales representative who
has a copy of the 8.1.7 distribution and will sell it to you.  And that
may be the only way to obtain this software (unless you happen to find
some friend of yours still running it and who has the original software
distribution).

Contact Oracle Sales in your area.  And stop posting your wish list
here.

David Fitzjarrell