SQLNet.Allowed_Logon_Version is deprecated

Resolution

In Oracle Database 12c parameter Allowed_Logon_Version is deprecated in SQLNet.ora

This parameter is been replaced by 2 new parameters

SQLNET.Allowed_Logon_Version_Server
SQLNET.Allowed_Logon_Version_Client
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How to fix: ERROR 1045 (28000): Access denied for user ‘root’@’localhost’ (using password: YES)

Open your terminal and type mysql -u root -p Enter your password. Hopefully your MySQL is logged in now.