Which three tools or tasks are run by default as part automated maintenance tasks? (Choose three.)
A.
Automatic Database Diagnostic Monitor
B.
optimizer statistics gathering
C.
SQL Access Advisor
D.
Segment Advisor
E.
Automatic SQL Tuning Advisor
Explanation:
https://docs.oracle.com/database/121/ADMIN/tasks.htm#ADMIN11836
B,D,E per link
Automatic Optimizer Statistics Collection
Automatic Segment Advisor
Automatic SQL Tuning Advisor
extra–SQL Plan Management (SPM) Evolve Advisor
Agree.
– https://docs.oracle.com/database/121/ADMIN/tasks.htm#ADMIN12331