You want to ensure the recoverability of the recovery catalog itself. Which of the following steps should you implement to maximize recoverability? (Choose all that apply.)
A. Configure the database for ARCHIVELOG mode.
B. Use BACKUP DATABASE PLUS ARCHIVELOG when you back up the recovery catalog.
C. Put the recovery catalog in the target database, and include a backup of the recovery catalog with every backup.
D. Back up the recovery catalog to disk and tape after each target database backup (in other words, two separate media types).
Answer: A B D
将数据库置于归档模式；备份数据库时同时备份归档日志；目标数据库备份之后也备份恢复目录。来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/81227/viewspace-2125339/ ，如需转载，请注明出处，否则将追究法律责任。
