There was some discussion back in 2010 on the mailing list that Oracle dialect was being worked on.
Does someone have the dialect? I just checked and we don’t have the implementation in trunk. Only Postgres, MySQL, H2 and HSQL. There is also a reference in amplecode quick library where there is a map of supported DBs and it has MSSQL in it, but its correlated dialect isn’t in the codebase. Oracle 10g is very close to Postgres 9 I think, so that should be fairly easy to add I think?