Run the included install.bat script to configure the required unmanaged DLL pathways. Troubleshooting Common Errors BadImageFormatException
Also, to help you with the , let me know: Are you running on Windows 10 or Server 2019/2022 ? Is your application 32-bit or 64-bit ?
If you want, I can:
Avoid downloading standalone .dll files from third-party registry sites. These files often lack necessary cryptographic signatures, may contain malware, or fail because they lack the required underlying Oracle Client infrastructure. oracle.dataaccess.dll version 4.112.3.0 download
The architecture of your application does not match the architecture of the loaded Oracle.DataAccess.dll .
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.
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: Run the included install
It is critical to understand that ODAC 11.2 Release 4 (11.2.0.4), which contains the specific file for version 4.112.3.0, is not publicly available for direct download on Oracle's main website. This version requires a valid Oracle Support contract. For most developers, the recommended path is to use the publicly available ODAC 11.2 Release 4 (11.2.0.3.0) , which also contains the Oracle.DataAccess.dll with the same AssemblyVersion of 4.112.3.0. The versioning can be confusing, but for practical purposes, version 11.2.0.3.0 of ODAC provides the required file.
Because this specific version ( 4.112.3.0 ) belongs to the Oracle 11g Release 2 (11.2.0.3 or 11.2.0.4) era, it is considered an archive version.
Visit the portal or search for the "ODAC Archive". If you want, I can: Avoid downloading standalone
This version is still found in many legacy enterprise applications, internal tools, and older ASP.NET web systems. If you are maintaining or deploying such an application, you may need to obtain this specific DLL version – not a newer one – due to strict assembly binding redirections or compatibility constraints.
When searching for "oracle.dataaccess.dll version 4.112.3.0 download," many unverified DLL archive websites will appear. Downloading individual DLLs from these sites is highly discouraged for several reasons:
.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
The is a core component of Oracle Data Provider for .NET (ODP.NET) , specifically released with Oracle Data Access Components (ODAC) 11.2 Release 4 . It is designed for applications targeting .NET Framework 4.0 and above that require communication with an Oracle Database. Key Specifications & Context
This aligns with the Oracle 11g Release 2 (11.2) client libraries.