Ensure your PATH variable includes the bin folder inside your new Oracle Home. Verifying the Driver in ODBC Administrator To confirm the 64-bit driver is active:

Mention the you are using (e.g., Excel, SSIS, Python) Confirm your Windows version

During installation, you can specify the name as OraClient11g_home1 to match your existing configuration requirements.

If your operating system is 64-bit and your application (like a 64-bit version of SQL Server Integration Services or a 64-bit reporting tool) needs to pull data, a 32-bit driver will not work. You must match the driver architecture to the application architecture, regardless of the database's location. How to Download the 64-Bit Oracle 11g Client

Look for "Oracle in OraClient11g_home1." If it appears here, your 64-bit applications can now utilize the connection.

Download the package (usually a ZIP file around 600MB). Installation and Setup Steps

I can then provide the exact configuration steps for your environment.

Oracle 11g is an older release, so the files are often hosted in the "Prior Release Archive" on the Oracle website. Follow these steps to get the official files: