What's happening?

The Oracle 11g ODAC (Oracle Data Access Components) 11.2.0.2.1 bundle includes Oracle Developer Tools (ODT) for Visual Studio and various data providers. This specific version is primarily available as a 32-bit package. Download and Official Sources

  1. After installation, go to Control Panel > Administrative Tools > Data Sources (ODBC).
  2. Click on the System DSN tab.
  3. Click on Add.
  4. Select Oracle ODBC Driver 11g from the list.
  5. Configure the ODBC driver settings as required.
  • all – install all components (ODP.NET, OO4O, ODBC, OLEDB, ODT)
  • C:\oracle\product\11.2.0\client_1 – Oracle home path
  • odac – Oracle home name

Verified Alternative Names (what Oracle actually called the file)

| Exact filename | Status | |----------------|--------| | odt_odac_112021.zip | Original name for 32-bit | | odt_odac_112021_x64.zip | 64-bit version | | ODAC112021ODTwith11202.zip | Another variant |

Troubleshooting Tips

3.1. Oracle Technology Network (OTN) – Legacy Archive

Oracle has moved older releases to the Oracle Software Delivery Cloud (formerly EDelivery). As of 2025, the direct OTN page for 11.2.0.2.1 may redirect you to a login portal.

To obtain the official software, you must access the Oracle Technology Network (OTN).

Minimum 1GB RAM (2GB recommended for modern Windows versions) and approximately 5GB of disk space for a typical installation. Installation Steps (ZIP/OUI Version) ODAC 11.2.0.2.1 Installation Instructions - Oracle