According to Tom Taulli at The Motley Fool, Oracle leads the database pack at almost 50% of the market. IBM is at 22% and Microsoft is at 15%. This is according to IDC and Gartner. I haven’t seen the actual report yet.
And while Open Source is growing, I think it will still be a while before it catches Oracle. Of course as an investing oriented site, they need to mention the “storm clouds on the horizon.” But, the sky isn’t fall