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When trying to connect to Oracle 9.2 from VS2012 using ODP.NET 12, I have got this message:
ORA-03134: Connections to this server version are no longer supported
I have installed ODP.NET 11 and I got the same error, although connecting with Toad is working.
Any ideas?
I solved the issue, uninstalling version 12 of ODP.NET, as version 12 is not supporting Oracle 9.2 databases.
ODP.NET version 11 works with version 9.2 and above.