Matthew T. Kromer writes:
... If installing Oracle's client libraries is a daunting task, you may also pursue some kind of SQL relay agent. One commercial relay agent is OpenLink (http://www.openlink.com) which you may use with an ODBC database adapter with Zope to connect to your remote databases.
I do believe there are also free Python-level remote database adapter modules, but I do not have details on them. You find one at <http://www.firstworks.com>. It's called "SQLRelay". Gives a good impression.
I am currently making first experiences with it to bridge the gap between Unix and MS SQL server by means of this product. Has good Python and Zope integration. Is a bit quiet, i.e. it is not easy to see what goes on when something does not work as one hopes. Dieter