I have successfully registered an OLE DB connection as a data source in ArcGIS Server. Is it possible to publish this as a feature service, and if not, what is the best way to create a service connecting to a table from the OLE DB?
Would using a model/script to update the data from an OLE DB to an ESRI recognized data source on some interval work? It would not be a Live Link, but I think this would allow you to have a feature service.