I guess I was imagining it when I used the features myself internally starting in 1989 or so. Distributed client/server was first implemented in Informix-SE in

I guess I was imagining it when I used the features myself internally starting in 1989 or so. Distributed client/server was first implemented in Informix-SE in the late 1980s but was more widely used starting with Informix-OnLine. Version 5.0 (general release in late 1991) had two-phased commit, but I think 4.X did also no later than summer 1990 because I did some onsite diagnosis/fixing for a major client then. There are references to OnLine 5.0 features and general release in the Informix 1991 Annual Report[0]. [0] http://archive.computerhistory.org/resources/text/Informix/informix.annual_report_1991.102653313.pdf http://archive.computerhistory.org/resources/text/Informix/i...