Oracle.dataaccess.dll Version 4.112.3.0 Download [repack] -

Finding the exact Oracle.DataAccess.dll version 4.112.3.0 can be tricky because it is an older "unmanaged" driver that is tied to a specific version of the Oracle client software. Stack Overflow Direct Download Options NuGet (x86) Oracle.DataAccess.x86.4 package specifically contains version 4.112.3.0. Official ODAC Package : This DLL is part of the

Oracle Data Access Components (ODAC) 11.2 Release 4 (11.2.0.3.0)

. You can find archived documentation and links for this release on the Oracle ODAC Documentation page Key Technical Constraints No Standalone DLL

: You generally cannot just download the DLL by itself and expect it to work; it requires a matching Oracle Instant Client installation on the machine. Bitness Mismatch

: The version 4.112.3.0 is often associated with the 32-bit (x86) client. If your application is running on a 64-bit OS but compiled as "Any CPU," it may fail to find this DLL unless the 32-bit client is correctly configured. GAC Registration

: After installation, you may need to manually register it in the Global Assembly Cache (GAC) using OraProvCfg.exe located in your Oracle home's ODP.NET\bin\4 Stack Overflow Pro-Tip: Switch to Managed Driver

If you are running into versioning headaches, Oracle now recommends the Oracle.ManagedDataAccess oracle.dataaccess.dll version 4.112.3.0 download

driver. Unlike the old unmanaged DLL, the managed version is a single, smaller assembly that doesn't require a full Oracle Client installation and isn't sensitive to 32/64-bit architecture. Oracle Forums ODAC 11.2.0.3.0 Install Instructions - Oracle

32-bit vs. 64-bit: The Most Common Gotcha

One of the biggest pain points with Oracle.DataAccess.dll 4.112.3.0 is bitness mismatch.

Verifying Your DLL Version

After obtaining the DLL, check its exact version:

Method A – File Properties:

  1. Right-click Oracle.DataAccess.dll → Properties → Details.
  2. Look for “File version” – should be 4.112.3.0.

Method B – PowerShell:

[System.Reflection.Assembly]::LoadFile("C:\path\to\Oracle.DataAccess.dll").FullName

Output example:

Oracle.DataAccess, Version=4.112.3.0, Culture=neutral, PublicKeyToken=89b483f429c47342

Method C – Visual Studio Immediate Window:

typeof(Oracle.DataAccess.Client.OracleConnection).Assembly.FullName

Installation & Verification Steps (Once You Obtain the Client)

After installing Oracle 11.2.0.3 Client:

  1. Locate the DLL
    C:\app\client\product\11.2.0\client_1\odp.net\bin\4\Oracle.DataAccess.dll

  2. Check file version
    Right-click → Properties → Details → File version should be 4.112.3.0.

  3. Register in GAC (optional but common)
    If the installer does not do it automatically, use:
    gacutil /i Oracle.DataAccess.dll

  4. Set environment variables

    • ORACLE_HOME = path to client root
    • Add %ORACLE_HOME%\bin to PATH

  5. Test connectivity
    Use sqlplus or a simple .NET console app to open a connection.

Version Breakdown

The version number 4.112.3.0 can be decoded as follows:

Oracle.DataAccess.dll Version 4.112.3.0 Download: A Complete Guide (ODAC 11.2 Release 4)

How to Add Reference to Your .NET Project

Once you have the DLL on your development machine:

  1. Open Visual Studio.
  2. Right-click References > Add Reference.
  3. Click Browse and navigate to the location of Oracle.DataAccess.dll.
  4. Select the file, click OK.
  5. Verify in the Properties window:
    • Copy Local = True (if deploying standalone).
    • Specific Version = True (to lock to 4.112.3.0).

Why You Might Need This Exact Version

  1. Assembly Binding Redirects – Your compiled application references 4.112.3.0 via a specific public key token. If you try to use a newer ODP.NET (e.g., 4.121.2.0), you may get a FileLoadException or Could not load file or assembly error.
  2. Legacy Server Environments – The target production server may have Oracle 11g R2 client already installed, and upgrading is not approved.
  3. Vendor-locked Applications – Third-party ERP, CRM, or custom LOB apps hardcode this version.

What is Oracle.DataAccess.dll?

Oracle.DataAccess.dll is the Oracle Managed Provider for .NET—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.

There are two common types of Oracle .NET providers:

  1. Unmanaged ODAC (Oracle.DataAccess.dll) – Requires Oracle Client installation. This is what version 4.112.3.0 belongs to.
  2. Managed ODP.NET (Oracle.ManagedDataAccess.dll) – Pure .NET, no Oracle Client needed.

Version 4.112.3.0 is unmanaged, meaning it depends on additional Oracle Client libraries (like OCI). Finding the exact Oracle