Enable unified auditing option
https://blogs.oracle.com/imc/entry/oracle_database_12c_new_unified Enalbe unified audit 1.Stop all Oracle processes: databases, listener and Enterprise Manager. 2.Relink Oracle with the uniaud_on option. cd $ORACLE_HOME/rdbms/lib make -f ins_rdbms.mk uniaud_on ioracle check that option is enabled: