The Oracle Dataaccess Client Is Not Installed

Feb 12, 2019 - Hi, I have installed multiple Oracle drivers on multiple machines that all use PowerBi x64. Tableau, sqlplus and oracle SQL connect perfect. Feb 27, 2018 - The Oracle Dataaccess Client Is Not Installed. Hi, I faced same issue now. I have ODAC 12c installed, and my Power BI desktop version is.

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I've recently set up a Windows 8.1 64 Bit Machine with Visual Studio 2013 (probably 32 bit, at least it installed itself at Program Files (x86)). I've also installed the Oracle 11.2.0.1 64 Bit Client with Oracle Data Provider for.NET.

When I do gacutil /l findstr Oracle.DataAccess, I get four entries, including the following: Oracle.DataAccess, Version=2.112.1.0., processorArchitecture=AMD64 However, I cannot find Oracle.DataAccess in any of the lists when trying to add an assembly (Oracle.Web is present under Assemblies->Extensions, though). Do I have to install the 32 bit Oracle Client (or simply 32 bit ODP.NET) as Visual Studio is 32 bit? If so, will the software be able to run on a 64 bit system with a 64 bit application and 64 bit Oracle Client (with 64 bit ODP.NET)? Yes, Visual Studio is an 32bit application. It depends on your compilation target ( x86 or x64 or AnyCPU) which Oracle Client you need for running/debugging your application, regardless of the architecture from Visual Studio. AnyCPU will run as 64 bit on a 64 bit Windows (which is most likely the case) Oracle.DataAccess does not appear because it is an 64bit assembly but your Visual Studio is 32bit. There are several solutions: • In Add References use the Browse section and locate Oracle.DataAccess.dll manually.

Typically you will find it in folder%ORACLE_HOME% odp.net bin 2.x or%ORACLE_HOME% odp.net bin 4 • Open your *.csproj, resp. *.vbproj file with a text editor and add reference manually, i.e. Add lines like this under element: False False Note: attributes like Version=. Or processorArchitecture=. Are not required. Your application will load the correct Oracle.DataAccess.dll depending on selected architecture and target.NET framework (provided that it is installed properly - also on your target machine) • Install both x86 and x64 Oracle Client on your machine.

Here is an instruction how to do this: • Use the ODP.NET Managed Driver from Oracle. You can download it from here: This works also with 32bit applications. • Open your Registry editor and check if RegKey HKLM SOFTWARE Wow6432Node Microsoft.NETFramework v2.0.50727 AssemblyFoldersEx ODP.NET resp. HKLM SOFTWARE Wow6432Node Microsoft.NETFramework v4.0.30319 AssemblyFoldersEx ODP.NET exist. Both RegKeys contain only the (Default) value with location of your Oracle.DataAccess.dll. Example: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE SOFTWARE Wow6432Node Microsoft.NETFramework v2.0.50727 AssemblyFoldersEx ODP.Net] @='c: oracle product 11.2 Client_x86 odp.net bin 2.x' [HKEY_LOCAL_MACHINE SOFTWARE Wow6432Node Microsoft.NETFramework v4.0.30319 AssemblyFoldersEx ODP.Net] @='c: oracle product 11.2 Client_x86 odp.net bin 4' • Check your target Framework in compile options.