Which are the two prerequisites before setting up Flashback Data Archive? (Choose two.)
A.
Flash recovery area must be defined
B.
Undo retention guarantee must be enabled.
C.
Database must be running in archivelog mode.
D.
Automatic undo management must be enabled.
E.
The tablespace in which the Flashback Data Archive is created must have automatic
segment space Management (ASSM).
D and E are correct, but annoying since the reference is found in Oracle White Paper instead of official documentation:
http://www.oracle.com/technetwork/database/focus-areas/storage/total-recall-whitepaper-171749.pdf
Flashback Data Archive Requirements
1. Flashback Data Archive tablespaces must be managed with automatic segment space
management (ASSM).
2. Automatic Undo Management must be enabled.