Your test database is running in NOARCHIVELOG mode. Which statement is true regarding the type ofbackups that can be performed on the database()
A:You can perform online whole database backups.
B:You can performofflinewhole database backups.
C:You cannot perform schema-level export/import operations.
D:You can perform the backup of only the SYSTEM tablespace when the database is open.
出自:Oracle认证