1. 64 Bit Oracle Client Components
2. 64-bit Download Free

ODAC insn't a product as such - it is actually a collection of drivers that provide connectivity to Oracle (listed below). If you are asked to install a particular Oracle driver, such as ODBC, OLE DB or a provider for .Net then in all probability you just need to install whole the ODAC package.

• Oracle Developer Tools for Visual Studio
• Oracle Data Provider for .NET
• Oracle Providers for ASP.NET
• Oracle Provider for OLE DB
• Oracle Services for Microsoft Transaction Server (MTS)
• Oracle ODBC Driver

Devart provides free download for Trial Edition of Oracle Data Access Components. You can download and try out it for free during 60 days. ODP.NET and Dependent Unmanaged DLL Mismatch. To enforce the usage of Oracle.DataAccess.dll assembly with the correct version of its unmanaged DLLs, an exception is raised if Oracle.DataAccess.dll notices it has loaded a mismatched version of a dependent unmanaged DLL. As a first step we downloaded and installed the Oracle ODP.NET 12.2 64-bit drivers on the SQL Server 2012 Box. Post this, we set disabled the Package Property of '32-bit Runtime' and referenced the 64-bit Oracle.DataAccess.DLL in the VS Project and executed the same. This NuGet package contains Oracle.DataAccess.dll (x64- both the net20 and net40 versions) needed to compile a project that uses Oracle's ODP.NET Library. Oracle will still need to be installed on the production or development machine in order to connect to Oracle (those libraries are greater than. 64-bit Oracle Data Access Components (ODAC) Downloads: Important: The 32-bit Oracle Developer Tools for Visual Studio download is required for Entity Framework design-time features. Free downloads; Office resources; Programs. Overview; Administrators. 64 bit Windows 7, 32 bit Oracle.DataAccess.dll. I run everything in 64 bit mode except for the oracle stuff, sigh. How can I tell Pex to pull in the 32bit from the.net folders.

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Visual Studio; SDKs; Trial software. Free downloads; Office resources; Programs. Oracle.Dataaccess.dll which can support both 64x and 86x. That there are both 32 and 64 bit editions of the Oracle DLLs that both use the same version number.

For Troubleshooting / FAQ, see the section at the bottom of the page.

Installation Instructions

The following instructions are pretty generic and should apply to all versions of ODAC:

• Ensure that your TMP and TEMP environmental variables do not contain a '!' character (if, for example, your username includes this character) as it causes the Oracle Installer to silently quit, causing much confusion.
• Copy the ODAC software onto the server, unzip it to a temporary location (which can be deleted after the install)
• Run the Setup.exeexecutable and proceed as follows:

• Click next

• Select Oracle Data Access Components for Oracle Client, and then click next

• Enter an appropriate Oracle Base location (e.g. D:Oracle)
• Enter a descriptive name for the home name and edit the path to clearly indicate that this is an ODAC install, and whether it is 32bit or 64bit.

• Click next

• Click next

• Leave the port on the default 2030and click next

• Click next

• Installation is now complete, so click exit.
• Note: The server must be rebooted for some of the components (like OLE DB) to be registered properly.

FAQ / Troubleshooting

64 Bit Oracle Client Components

I have been asked to install both the 32 and 64 bit versions of ODAC. Which should I do first.

Install the 32 bit drivers first, then the 64 bit drivers. During the 64 bit install you will probably see the error in the next question (which can be ignored).

I get an 'OracleMTSRecoveryService already exists' error.

It's OK, you can safely ignore this error.

64-bit Download Free

The Oracle driver is not listed in the 'ODBC Administrator' utility and the developers cannot create a DSN (Data Source Name).

Did you install the 32 bit version of ODAC on a 64 bit OS?

If so, when you run ODBC Administrator from the start menu (or control panel) you are actually running the 64 bit version of the utility which is unable to 'see' the Oracle driver. The answer is to run the 32 bit version of ODBC Administrator and create the DSN there. The 32 bit version can be launched by running the following command:

Users are reporting a 'ole db provider not registered' error.

The server needs to be rebooted after installation for the OLE components to be registered.

Users are reporting that 'SSIS' does not work.

SSIS stands for SQL Server Integration Services, a tool which allows SQL Server to talk to an Oracle database. Under the covers SSIS uses the OLE DB access component. If the users are complaining about an error with their SSIS connection then it probably means the server was not rebooted after the ODAC installation (i.e. the OLE problem in the above question).