Oracle Database 11g Release 2 For Microsoft Windows -32-bit- Guide

Microsoft accelerated the shift by making Windows Server 2008 R2 (2009) the last Microsoft server OS to offer a 32-bit edition. Subsequent releases, from Windows Server 2012 onward, were exclusively 64-bit. Without a modern, supported OS, Oracle’s 32-bit database became an orphaned platform. Oracle officially desupported the 32-bit Windows port after 11g Release 2, never offering it for 12c or later versions.

Oracle 11g R2 introduced several advancements that improved performance and management: Oracle Database 11g Release 2 New Features Summary, Part 1 oracle database 11g release 2 for microsoft windows -32-bit-