多选题To enable faster incremental backups, you enabled block change tracking for the database.Which two statements are true about the block change tracking file?（）AMultiple change tracking files can be created for a database.BThe change tracking file must b
题目
多选题
To enable faster incremental backups, you enabled block change tracking for the database.Which two statements are true about the block change tracking file?（）
A
Multiple change tracking files can be created for a database.
B
The change tracking file must be created after the first level 0 backup.
C
RMAN does not support backup and recovery of the change tracking file.
D
The database clears the change tracking file and starts tracking changes again, after whole database restore and recovery operations.