You're looking for the "oracle.dataaccess.dll" version 4.112.3.0. This DLL is a part of the Oracle Data Access Components (ODAC) and is used for .NET applications to connect to Oracle databases.
To download the "oracle.dataaccess.dll" version 4.112.3.0, you can try the following options:
Ensure you're selecting the correct version (4.112.3.0) and that it's compatible with your .NET framework and Oracle database versions.
If you encounter issues during the download or installation process, refer to the Oracle documentation or seek assistance from Oracle support forums for further guidance.
The assembly Oracle.DataAccess.dll version 4.112.3.0 is the primary driver for Oracle Data Provider for .NET (ODP.NET), specifically bundled with ODAC 11.2 Release 4 (11.2.0.3.0). This legacy version is critical for .NET Framework 4.0 (and above) applications that still rely on "Unmanaged" Oracle clients to connect to older databases or use features like User-Defined Types (UDTs). Direct Download and Installation
Oracle does not provide a standalone download for just the .dll. You must download the full Oracle Data Access Components (ODAC) package.
Official Source: Visit the Oracle .NET ODAC Downloads page. Since version 11.2.0.3.0 is older, check the ODAC 11.2 Release 4 (11.2.0.3.0) Install Instructions for archived links. oracle.dataaccess.dll version 4.112.3.0 download
XCopy Version: For lighter deployments, use the ODAC 11.2.0.3.0 XCopy zip.
NuGet (Non-Official): While there is a NuGet package for Oracle.DataAccess.x86.4, it is a community-maintained package and may still require a local Oracle client to function. Key Technical Specifications Full Version ODAC Release 11.2 Release 4 (11.2.0.3.0) Target .NET Framework .NET Framework 4.0, 4.5, and above Processor Architecture x86 (32-bit) or x64 (64-bit) versions available Primary Dependency Requires Oracle Client (Instant, Runtime, or Full) Installation & Troubleshooting Steps 1. Registration in the GAC
If your application cannot find the DLL (error FileNotFoundException), it likely needs to be registered in the Global Assembly Cache (GAC). Use the OraProvCfg.exe tool located in your Oracle Home:
# Navigate to your ODP.NET bin folder cd C:\app\oracle\product\11.2.0\client_1\odp.net\bin\4 # Register the DLL OraProvCfg.exe /action:gac /providerpath:Oracle.DataAccess.dll Use code with caution. 2. Fixing Architecture Mismatch ODAC 11.2.0.3.0 Install Instructions - Oracle
The assembly Oracle.DataAccess.dll version 4.112.3.0 is the 32-bit unmanaged ODP.NET provider associated with Oracle Data Access Components (ODAC) 11.2.0.3.0. This version is typically required for .NET 4.0 applications connecting to Oracle 11g databases. Quick Download Options
Official Oracle Download: You can find older ODAC releases, including version 11.2.0.3.0, on the Oracle .NET Downloads page or the ODAC 11.2.0.3.0 Install Instructions page. You're looking for the "oracle
NuGet Package (Alternative): A community-maintained version is available at NuGet - Oracle.DataAccess.x86.4 (Version 4.112.3). This is often easier for development environments that don't need a full client installation. Core Report Details Assembly Name: Oracle.DataAccess.dll Version: 4.112.3.0 (indicates .NET 4 compatibility). Bundle: Included in the ODAC 11.2.0.3.0 bundle.
Architecture: Specifically 32-bit (x86). If you need a 64-bit version, you must typically look for the newer 11.2.0.4.0 release, as a dedicated 64-bit installer for 11.2.0.3.0 is not standard.
Common File Path: After installation, it is usually found in ORACLE_HOME\odp.net\bin\4\Oracle.DataAccess.dll or registered in the Global Assembly Cache (GAC). Installation Recommendations ODAC 11.2.0.3.0 Install Instructions
After installing Oracle 11.2.0.3 Client:
Locate the DLL
C:\app\client\product\11.2.0\client_1\odp.net\bin\4\Oracle.DataAccess.dll
Check file version
Right-click → Properties → Details → File version should be 4.112.3.0. Oracle Official Website : You can download it
Register in GAC (optional but common)
If the installer does not do it automatically, use:
gacutil /i Oracle.DataAccess.dll
Set environment variables
ORACLE_HOME = path to client root%ORACLE_HOME%\bin to PATHTest connectivity
Use sqlplus or a simple .NET console app to open a connection.
You can combine Instant Client with the standalone ODP.NET package:
ODAC112030Xcopy_4.112.3.0.zip (Xcopy version) from Oracle archives.C:\oracle\odac_11203.PATH environment variable to include that folder’s bin subdirectory.Oracle.DataAccess.dll.Do not search for “oracle.dataaccess.dll version 4.112.3.0 download” on public search engines expecting a safe, clean file. Instead:
Getting the DLL alone is rarely sufficient – the surrounding unmanaged dependencies, registry keys (for TNS names), and environment setup are equally critical for successful database connectivity.
This guide is for informational purposes. Always refer to official Oracle documentation for the most current licensing and installation instructions.
You cannot download Oracle.DataAccess.dll as a standalone file. It must be installed using Oracle’s installers. Below are the official methods.