You executed the STARTUP MOUNT command to start your database.
For which database operation do you need to start the database in the MOUNT state?
A. renaming the control files
B. dropping a user in your database
C. enabling or disabling redo log archiving
D. dropping a tablespace in your database
E. re-creating the control files, after you lost all the control files in your database
Answer: C
"Steps for Creating New Control Files"
Changing the Database Archiving Mode
ABD需要在open状态
数据库在 mount 期间可以执行以下操作:
? 启用或禁用 redo 日志归档选项
? 执行完整的数据库恢复
E只能不完全恢复，这里只有C符合