Oracle.dataaccess.dll Version 4.112.3.0 Download Fix Jun 2026

When upgrading to .NET 4.0+ using this legacy DLL, developers often encounter configuration errors regarding the <sectionGroup> in machine.config or web.config . You may need to manually add the following to your config file:

You cannot simply copy this DLL into a bin folder and expect it to work – the full Oracle Client (or Instant Client) must be installed and properly configured. oracle.dataaccess.dll version 4.112.3.0 download

This registers the DLL in the at:

If you are building a new application today, avoid using this version. Instead, use the latest from NuGet. However, if you are maintaining an existing system—or deploying a legacy ERP—this guide gives you everything you need to successfully acquire, install, and resolve errors related to Oracle.DataAccess.dll 4.112.3.0 . When upgrading to

, but it still requires the Oracle Client to be installed on the machine. ⚠️ Common Usage & Troubleshooting Instead, use the latest from NuGet

: Oracle does not provide separate, standalone downloads for individual .dll files. You must download the full installer package to ensure all background dependencies are correctly registered.