多选题You are maintaining your database in Oracle10g. You perform a full user-managed backup every Sunday at 8：00 P.M. Your database is running in ARCHIVELOG mode. On Monday， at 9：00 A.M.， a tablespace is dropped. You decide to perform incomplete recovery to recover the dropped tablespace. Which two clauses can you use with the RECOVER command？（）AUNTIL SEQUENCEBUNTIL SCNCUNTIL CHANGEDUNTIL CANCEL
多选题
You are maintaining your database in Oracle10g. You perform a full user-managed backup every Sunday at 8：00 P.M. Your database is running in ARCHIVELOG mode. On Monday， at 9：00 A.M.， a tablespace is dropped. You decide to perform incomplete recovery to recover the dropped tablespace. Which two clauses can you use with the RECOVER command？（）
A
UNTIL SEQUENCE
B
UNTIL SCN
C
UNTIL CHANGE
D
UNTIL CANCEL
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