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Im trying to add an edmx model in my. Net project that is connected to an oracle db.

I have installed the oracle developer tools for vs2017 and oracle client 12.1.

After i set up the connection string in and want to generate the edmx i get an error: "operation failed due to current state of the object" and i can't find the solution..

I've tried reinstalling both vs2017, oracle client and oracle developer tools but none of it worked..

Thank you in advance!

Tali Cohen
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1 Answers1

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Did you try this link: It's explaining how to configure entity framework 6 with database-first and oracle.

And also I found this solution for the error you get: "Operation is not valid due to the current state of the object" when trying to add a new connection in Visual Studio 2017

M Granja
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Pavel
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