Visit the Oracle Technology Network (OTN) - ODAC Downloads page . Look for "Oracle Data Access Components for Windows".
To download and use , you must install the specific Oracle Data Access Components (ODAC) package that includes it . This version corresponds to the Oracle 11g Release 2 (11.2.0.3.0) client drivers. 1. Identify the Correct Download
Oracle.DataAccess.dll is the —part of Oracle’s ODAC suite. It acts as a bridge between your C# or VB.NET application and the Oracle Database server, allowing ADO.NET commands like OracleConnection , OracleCommand , and OracleDataAdapter .
oracle.dataaccess.dll version 4.112.3.0 is a stable, widely deployed legacy driver for .NET 4.0 applications connecting to Oracle 11g databases. While reliable, it requires careful attention to 32/64-bit architecture matching and proper installation of the underlying Oracle Client libraries. oracle.dataaccess.dll version 4.112.3.0 download
The most secure method is downloading the full installer from Oracle's Technology Network . Navigate to "Oracle Database > Technologies > .NET > ODAC".
ORACLE_BASE\ORACLE_HOME\odp.net\bin\4\Oracle.DataAccess.dll
static void Main()
Accept the Oracle License Agreement and sign in with your Oracle account (free to create).
: 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.
Many websites, like dllme.com or ijinshan.com , offer the DLL for a quick, standalone download. While convenient, using these sites is for a few reasons: Visit the Oracle Technology Network (OTN) - ODAC
Older ODAC versions may require "Run as Administrator" for installation on Windows 10/11 and may need UAC (User Account Control) to be temporarily disabled.
What is the and bitness (x86/x64) of your application? What exact error message are you seeing in your logs?
Alternative: . Unlike managed drivers, the unmanaged Oracle.DataAccess.dll 4.112.3.0 is not on NuGet because it depends on Oracle Client registry and environment settings. This version corresponds to the Oracle 11g Release 2 (11
A more direct way is to download the package. This package is designed for developers and includes the necessary DLLs, including the 4.112.3.0 version. Installation Steps (Oracle Client 11.2.0.3)