Oracle Database Version History and Release Dates

For some reason, most software vendors do not publish a simple chart of when major and minor versions of their software were released. Oracle is especially bad at organizing and releasing this information. As of June 10, 2016, this is the most accurate data I could compile by scouring the web and Oracle support pages.

12c Release 1
12.1.0.2 Sep 2015
12.1.0.1 Jul 2013

11g Release 2
11.2.0.4 Aug 2013
11.2.0.3 Sep 2011
11.2.0.2 Nov 2010
11.2.0.1 Sep 2009

11g Release 1
11.1.0.7 Sep 2008
11.1.0.6 Aug 2007

10g Release 2
10.2.0.5 Jul 2010
10.2.0.4 Feb 2008
10.2.0.3 Feb 2007
10.2.0.2 Jan 2006
10.2.0.1 Jul 2005

10g Release 1
10.1.0.5 Jan 2006
10.1.0.4 Mar 2005
10.1.0.2 Mar 2004