If you need the behavior of 10g but want support:
You should only download Oracle software directly from the official Oracle Technology Network (OTN) or Oracle Software Delivery Cloud. Oracle Database 10g Release 2 10.2.0.5 Download NEW
Oracle Database 10g Release 2 (10.2.0.5) is a legacy version. Premier Support ended in July 2010, and Extended Support ended in July 2013. This software is no longer available for public download from Oracle’s main website (edelivery.oracle.com) without a valid Oracle Support Contract that includes access to legacy software. If you need the behavior of 10g but