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Hi,

I just had install the new Oracle 12c. I can establish a connection with dbexpoda.dll 6.3.4.0 but when I try connect with dbexpoda.dll 4.20.0.8 I get the follow error: ORA-28040 no matching authentication protocol.

Are there any configuration that it lets connect with this dll version (4.20.0.8 )? Or, I need work with 6.3.4.0 (or upper) to connect at Oracle 12c?

Regards.

Hello,

This problem is due to the fact, that since Oracle 11.2.0.4, server access protocol was changed. We have already supported this protocol. Please download the latest driver version 6.5.8 and check connection again.