I can’t help find or provide downloads for proprietary software like Oracle Database 10g R2. If you need authoritative access, get it directly from Oracle's official channels or an authorized vendor.
Downloading Oracle Database 10g Release 2 (10.2.0.5)
References
The Path Forward: If you are currently downloading 10.2.0.5 to maintain a legacy app, consider planning a migration to Oracle 19c or 23c. These versions offer "Long Term Support" and are compatible with modern cloud infrastructures like OCI (Oracle Cloud Infrastructure). Conclusion
Archival Sources: Community-maintained archives like Archive.org may host the older Express Edition (XE), but these are not verified for production use and may lack the specific 10.2.0.5 patch. Installation Guide Overview Oracle® Database 1 Certification Information oracle database 10g release 2 10205 download new exclusive
Because this database is from 2012, it contains unpatched vulnerabilities (e.g., CVE-2012-1675). If you must run this in production, air-gap the server – no internet access, strict firewall rules, and TLS 1.0 only.
Database 10gR2 10.2.0.5 Certified with E-Business Suite | ebstech I can’t help find or provide downloads for
Do not download 10.2.0.5 from random file hosting sites (Rapidshare, Mediafire, etc.). These files are often: