Thursday, November 13, 2014

ORA-28040: No matching authentication protocol

When trying to connect to 12c database with client or database which is lesser than 11g , it rejects the connection with below error.


An unknown error has occurred. The provided message is "Could not get JDBC Connection; nested exception is java.sql.SQLException: ORA-28040: No matching authentication protocol ".

To fix such error , we just need to add the following the parameter in sqlnet.ora file in $ORACLE_HOME/network/admin and restart the listener , that's it , all good :)

SQLNET.ALLOWED_LOGON_VERSION=8

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