of the Oracle database software. There is no official, public "NEW" download link for this version as it reached the end of its patching lifecycle in July 2015. Upgrade your Database - NOW!
Before downloading and installing Oracle Database 10g Release 2 10.2.0.5, ensure that your system meets the following requirements: Oracle Database 10g Release 2 10.2.0.5 Download NEW
10.2.0.5 is often the required "hop" version for upgrading legacy databases to Oracle 11g or 12c. Where to Download Oracle Database 10.2.0.5 of the Oracle database software