12、Which two types of Information can be found in the alert log?

A) instance recovery details

B) a record of all DDL statements performed by non-DBA users

C) a record of all actions performed by SYS and SYSTEM

D) critical errors encountered by background processes

E) values of all Initialization parameters whenever an Instance Is restarted

Answer:AD

北京CUUG整理，转载请注明，OCP讨论群：569933648