Oracle.dataaccess.dll Version 4.112.3.0 Download -

If you can modify your code, consider upgrading to the managed driver:

Install-Package Oracle.ManagedDataAccess

Change your using statements from:

using Oracle.DataAccess.Client;

to:

using Oracle.ManagedDataAccess.Client;

The managed driver is a single DLL (~5 MB), fully .NET, no Oracle client required, and supports async.

If you are not strictly bound to this exact version, consider upgrading:

| Solution | Effort | Benefit | |----------|--------|---------| | Upgrade to ODAC 12c or 19c | Moderate | Same 4.x assembly version but updated patches. Use binding redirects. | | Switch to Oracle.ManagedDataAccess | Medium | No Oracle Client required, cross-platform, easier deployment. | | Containerize the legacy app | Low | Use a Windows Docker container with ODAC 11.2 pre-installed. |

Oracle currently distributes ODAC 19c (version 4.122.19.1), which supports .NET Framework 4.6+ and .NET Core/.NET 5+. However, it is not a direct drop-in for 4.112.3.0 if you rely on specific obsolete method signatures.

Even if the DLL loads, it cannot find the database. You must have a valid tnsnames.ora file or use EZConnect format:

string connStr = "Data Source=//hostname:1521/servicename;User Id=scott;Password=tiger;";

Websites like DLL-files.com, Fix4DLL.com, Pconlife.com, or similar should never be used to download Oracle.DataAccess.dll. These are unverified, often contain:

Oracle DLLs are cryptographically signed by Oracle. While you can check the digital signature, downloading from anywhere other than Oracle is a security risk and violates Oracle’s licensing terms.

This is the most reliable method.

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. oracle.dataaccess.dll version 4.112.3.0 download

This guide is for informational purposes. Always refer to official Oracle documentation for the most current licensing and installation instructions.

The story of Oracle.DataAccess.dll version 4.112.3.0 is a classic tale of the "DLL Hell" that developers often face when working with the Oracle Data Provider for .NET (ODP.NET). This specific version is tied to Oracle Data Access Components (ODAC) 11.2 Release 3

, a crucial piece of middleware used to connect .NET applications (like those built in C# or VB.NET) to Oracle databases. Oracle Forums The Developer's Dilemma

Imagine a developer who has just finished building a console application on their local machine. Everything works perfectly until they deploy it to a production server. Suddenly, the app crashes with a dreaded error:

Could not load file or assembly 'Oracle.DataAccess, Version=4.112.3.0'

This begins a "detective story" where the developer must reconcile several strict requirements: The Architecture Trap

: Version 4.112.3.0 is highly sensitive to whether the application is running in 32-bit (x86) 64-bit (x64)

mode. If a 32-bit application tries to load a 64-bit version of this DLL, it throws a System.BadImageFormatException The GAC Gatekeeper

: To make the DLL available system-wide, it often needs to be registered in the Global Assembly Cache (GAC) . Developers frequently use tools like oraprovcfg.exe to force the server to recognize this specific version. The Version "Lock-In"

: Version 4.112.3.0 belongs to the 4.x family of ODP.NET, which is designed for applications targeting .NET Framework 4.0 or higher

. If the app was built for .NET 2.0, it wouldn't even look for this version—it would demand the 2.x equivalent instead. Stack Overflow Where to Find It

Because this version is legacy (associated with Oracle 11g), it is no longer the primary download on Oracle’s main site. Developers often hunt for it in:

oracle.dataaccess.dll is the primary component of the Oracle Data Provider for .NET (ODP.NET)

, which allows .NET applications to connect with Oracle Databases. This specific version belongs to the Oracle Database 11g Release 2 (11.2.0.3.0) Oracle Forums Download Options If you can modify your code, consider upgrading

Oracle does not provide a direct download for a standalone DLL. You must download a full Oracle Data Access Components (ODAC) package that includes this version: ODAC for .NET (32-bit/64-bit) : To get version 4.112.3.0, you typically need ODAC 11.2 Release 4 Official Source : Downloads are hosted on the Oracle ODAC Software Downloads NuGet (for Development) : A community-maintained Oracle.DataAccess.x86.4 package

exists for 32-bit environments but is primarily used for quick referencing. Stack Overflow Critical Technical Specifications

Oracle.DataAccess.dll is a critical component of the Oracle Data Provider for .NET (ODP.NET)

. It acts as the bridge between .NET applications (using .NET Framework 4.0 or higher) and the Oracle Database. 🛠️ Technical Profile Component: ODP.NET, Unmanaged Driver Oracle Client Version: 11.2.0.3.0 Target Framework:

.NET Framework 4.x (indicated by the leading "4" in the version number) Available in both 32-bit (x86) 64-bit (x64) Oracle Forums 📥 Where to Download

You cannot typically download this single DLL safely from a third-party site. It must be installed as part of a larger package to ensure all "unmanaged" dependencies (like ) are present. Official Source: Download the Oracle Data Access Components (ODAC) Specific Version: ODAC 11.2.0.3.0 on the Oracle Technology Network. Alternative (Developer): A community-maintained version is available on

, but it still requires the Oracle Client to be installed on the machine. ⚠️ Common Usage & Troubleshooting

Developers often search for this specific version because ODP.NET is version-sensitive

; the DLL version must match the installed Oracle Client version exactly to function. Oracle Forums The "Bitness" Trap:

If your application is "Any CPU" but you only have the 32-bit driver installed, it will fail on 64-bit Windows. You must match the application's process bitness to the driver. If you have multiple versions installed, use the setting in your web.config app.config to force the app to use the correct GAC Installation: This version is often registered in the Global Assembly Cache (GAC)

. If your project reference is "broken," check if the assembly is properly GACed using Oracle Forums 🚀 Modern Recommendation

If you are starting a new project or can refactor, Oracle recommends switching to the Managed Driver Oracle.ManagedDataAccess.dll Oracle Forums

It is a single DLL, does not require an Oracle Client installation, and is platform-independent (works for both 32-bit and 64-bit without extra configuration).

Are you trying to fix an "Assembly not found" error in an existing app, or are you setting up a new development environment? I can provide the specific web.config snippets or installation steps for either case. ODAC 11.2.0.3.0 Install Instructions - Oracle Change your using statements from: using Oracle

To download and use Oracle.DataAccess.dll version 4.112.3.0, 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 does not provide standalone DLL files for security and licensing reasons. You must download the full ODAC bundle: Source: Visit the Oracle .NET Software Downloads page. Version Match: Look for ODAC 11.2 Release 3 (11.2.0.3.0).

Architecture: Ensure you choose the correct bitness (32-bit or 64-bit) that matches your application's target platform, not necessarily your OS. 2. Installation Methods

Xcopy Bundle: Best for minimal footprints. You manually register the DLL using OraProvCfg.exe.

Oracle Universal Installer (OUI): Recommended for development machines. It handles the File Locations and GAC registration automatically.

NuGet (Modern Alternative): While version 4.112.3.0 is legacy, you can find official packages on NuGet.org for newer "Managed" versions that don't require a full client installation. 3. Locate the DLL After Installation

Once installed, the file is typically located in your Oracle Home directory:

Path: ORACLE_BASE\ORACLE_HOME\odp.net\bin\4\Oracle.DataAccess.dll

Documentation: Readme and setup guides are usually found in ORACLE_HOME\ODP.NET\doc. 4. Critical Compatibility Notes

Legacy Support: Oracle 11g is in "Sustaining Support" or has reached End of Life, meaning it lacks modern security patches.

OS Requirements: 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.

If you have landed on this page, you are likely a .NET developer or a database administrator working with Oracle databases. You have encountered the specific file Oracle.DataAccess.dll and need version 4.112.3.0. This file is a core component of Oracle’s ODP.NET (Oracle Data Provider for .NET) – the bridge that allows your .NET applications (ASP.NET, Windows Forms, WCF Services) to communicate with Oracle databases efficiently.

But unlike a simple ZIP file from a public repository, obtaining the correct version of this DLL requires understanding Oracle's distribution model, licensing, and dependencies. This article will provide a step-by-step guide on how to download, install, register, and troubleshoot Oracle.DataAccess.dll version 4.112.3.0.

Important Note: Oracle.DataAccess.dll version 4.112.3.0 is part of the ODAC (Oracle Data Access Components) 11.2 Release 4 (specifically 11.2.0.3.0). It is an older but still widely used version, especially in legacy enterprise applications.

After installing Oracle 11.2.0.3 Client: