One of the most common pitfalls with Oracle.DataAccess.dll is mixing architectures.
A: No, Oracle.DataAccess.dll version 4.112.3.0 is compatible with Oracle Database 12c and later versions. For Oracle Database 11g, you should use an earlier version of Oracle.DataAccess.dll.
This indicates the DLL is compiled for the .NET Framework 4.0 or higher. oracle.dataaccess.dll version 4.112.3.0 download
Download the zipped package (e.g., ODAC112030Xcopy_x64.zip or the OUI installer version).
Before spending hours hunting an outdated DLL, consider: One of the most common pitfalls with Oracle
: This happens when the Oracle.DataAccess.dll version in your project doesn't match the version of the oraociei11.dll installed on the system. Always ensure the DLL and the client software are from the same release.
Navigate to the official Oracle Technology Network (OTN) download page. This indicates the DLL is compiled for the
Simply placing the DLL in your application folder is often insufficient because it requires native binaries (like OraOps11w.dll ).
The version number 4.112.3.0 identifies two key things about the driver:
Oracle does not typically provide unmanaged DLLs as standalone downloads because they rely on native dependencies (like OraOps11w.dll ) and an underlying Oracle Client
The is a critical component of the Oracle Data Provider for .NET (ODP.NET), mapping directly to the Oracle 11g Release 2 (11.2.0.3) client footprint. Legacy .NET Framework applications frequently rely on this exact library version to establish stable, native connections to Oracle databases. Technical Specifications Specification Component Name Oracle Data Provider for .NET (ODP.NET) Legacy Driver File Name Oracle.DataAccess.dll File Version 4.112.3.0 Target Runtime .NET Framework 4.0 / 4.5+ Oracle Client Link Oracle 11g Release 2 (11.2.0.3) Architecture Dependability Highly Architecture Specific (Separate x86 and x64 builds) Safe Downloading Methods