You are working on a 24X7 database. You want to design a backup strategy for your database that uses user managed backups. You want to be able to perform all backups while the database remains online.
Which statement about performing user-managed backups in a 24×7 environment is true?
A.
You must have change tracking enabled in your database
B.
Your database must be running in NOARCHIVELOG mode
C.
To back up a tablespace, it must be in backup mode
D.
To back up a tablespace, it must first be taken offline