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ORA-12560 error after installing Oracle 8i Enterprise Edition

I have installed Oracle 8i Enterprise Edition on my Windows 2000 server machine. When I try to export my data, I am getting the error, "ORA-12560: TNS:Protocol adaptor error."

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This is usually due to a setting in your sqlnet.ora. If you see a line in your sqlnet.ora file (located in ORACLE_HOMEnetworkadmin) like this:

 SQLNET.AUTHENTICATION_SERVICES=(NTS)

then you should try commenting that line out and try again. If you don't see that line, try adding it and see if that changes your outcome.


This was first published in October 2004

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