If the software is no longer visible in the portal, customers with active support can request a physical or electronic media download by opening a non-technical Service Request (SR) under "Software & OS Media Request". Key Specifications for 10.2.0.5
Once you have the exclusive p8202632 zip, here is the high-level process to apply it to a fresh 10.2.0.1 base. oracle database 10g release 2 10205 download new exclusive