Please post the alert log contents. Are there any other parameters you changed?? Because changing SQLNET.AUTHENTICATION_SERVICES=none in sqlnet.ora will make it not possible to connect to the database without a password as sysdba. (sqlplus / as sysdba)
Please check with crs_stat -p <resource>. For the database / instance resource, you should find out below string and value. The auto start of DB will use the connect string to logon. However, the value of SQLNET.AUTHENTICATION_SERVICES is set to "NONE" which make the DBA group user failed to logon with sysdba without correct password.