Which of the following methods can be used to detect block corruption？（）  

A. Reduced MTTR.
B. Datafiles remain offline while corrupt blocks are repaired.
C. Datafiles remain online while corrupt blocks are repaired.
D. A and C

A. Schedule，create new package，view manifest，view contents
B. Create new package，view manifest，view contents，schedule
C. Schedule，create new package，view contents，view manifest
D. Create new package，view contents，view manifest，schedule
E. None of the above.

A. Cleans up the ADR by deleting files not associated with an incident uploaded to Oracle Support.
B. Identifies all files associated with a critical error and adds them to a zip file to be sent to Oracle Support.
C. Automatically opens a Service Request with Oracle Support for each critical error and sends all relevant files.
D. Displays a high-level view of critical errors on the database home page.