（单选题）
Your test database is running in NOARCHIVELOG mode. Which statement is true regarding the type ofbackups that can be performed on the database（）
AYou can perform online whole database backups.
BYou can performofflinewhole database backups.
CYou cannot perform schema-level export/import operations.
DYou can perform the backup of only the SYSTEM tablespace when the database is open.
正确答案
答案解析
略
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