I have installed the above oracle version (personal edition) for my developmental purpose. But when I try to login through sqlplus, always it throws me the error
no matching authentication protocol.
I have of course googled, and found out people asking to change
SQLNET.ALLOWED_LOGON_VERSION to 8 in the
sqlnet.ora file, which I changed. I even added
SQLNET.ALLOWED_LOGON_VERSION_CLIENT with the same versions.
There was only one entry in this file which was
SQLNET.AUTHENTICATION_SERVICES = NTS. Then I added the above 3 settings. But after saving the file, I took command prompt and then sqlplus and tried to login as
sys as sysdba with password and got the same error again.
Can someone please help me, as I did almost all the steps I found googling, which didn't change the result.