Oracle Database 10g Release 2 (10.2.0.5) is a legacy version that has reached its end of life and is no longer available as a standard public download on the main Oracle website. 📥 Official Access via My Oracle Support
If you must download it, log into My Oracle Support → Patches & Updates → Search by Patch ID (8833280 for Linux x64). If you do not have a support contract, consider using Oracle Technology Network (OTN) for 10.2.0.1 (the base release) and then use the publicly archived documentation to request the terminal patch via a customer service ticket. Oracle Database 10g Release 2 10.2.0.5 Download NEW
Additional Resources
ORACLE_HOME environment variable set.shutdown immediate).Patch 8202632