Which three statements are true about automated maintenance tasks?
A.
Predefined maintenance tasks consist of automatic optimizer statistics collection, running
Automatic Segment Advisor, and running Automatic SQL Tuning Advisor.
B.
A repository is maintained in the SYSTEM tablespace to store the history of execution of all tasks.
C.
They run at predefined time intervals that are intended to occur during a period of low system loads
D.
An Oracle Scheduler job is created for each maintenance tasks that is scheduled to run in a maintenance window.
E.
A maintenance window is automatically extended until all the maintenance tasks defined are completed.
A&C&D
ACD
ACD
ACD