Oracle 10g express database link to Oracle 8i I upgraded a 9i install to 11g with only one problem.  Database links between 11g and our legacy 8i database are no longer supported.  I have to transfer data from 11g to 8i two or three times a day so I thought it might be possible to use 10g express to link the databases.
The data would be created in 11g, written to a table in 10g and then written to 8i.  (I agree this is not the most elegant solution and I can improve it using advanced queue tables).  

Does 10g express support database links to Oracle 8i?

Edit: thanks for the link to the Oracle documentation.  Has anyone actually done this with 10g express?

Edit:  The 8i database is Oracle8i Enterprise Edition Release 8.1.7.0.0 - Production
The intermediate would be the 10g express for windows
The origin database is Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
Metalink 207303.1 is the Client/ Server Interoperability Matrix which will be the definitive documentation.  Since the express edition of 10g is based on Oracle 10.2, a database link to an 8.1.7 database should be supported.  Database links to earlier versions of 8i (8.1.5 or 8.1.6) are not supported from a 10.2 database.  For general sanity, I'd strongly suggest that the 8i side be running at least the 8.1.7.4 patchset but that isn't strictly required.