After finding this tutorial , I downloaded and extracted the files needed. But when

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Asked: June 2, 20262026-06-02T15:45:24+00:00 2026-06-02T15:45:24+00:00

After finding this tutorial, I downloaded and extracted the files needed. But when I try to add their reference I get this error message:

A Reference to ‘..\oci.dll’ could not be added. Please make sure that the file is accessible, and that it is a valid assembly or COM component.

Any help with this?

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Editorial Team · Answer 1 · 2026-06-02T15:45:25+00:00

You should download and install ODP.NET (Oracle Data Provider for .NET)

For deployment look at the http://www.oracle.com/technetwork/issue-archive/2008/08-nov/o68odpnet-101744.html, but basically is xcopy deployment as V4Vendetta noted

Update: Client application need these dll’s (32 bit version):

oci.dll 
Oracle.DataAccess.dll 
oraociei11.dll 
OraOps11w.dll

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