Which two database operations can be performed at the MOUNT stage of database startup? (Choose two.)
A. renaming of control files
B. multiplexing of control files
C. dropping the database user
D. configuring the database in ARCHIVELOG mode
E. renaming of data files
Answer: DE
Creating Additional Copies, Renaming, and Relocating Control Files
Changing the Database Archiving Mode
重命名控制文件、删除用户 、删除表空间要在OPEN状态下;
配置归档模式、重命名数据文件、启用或禁用 redo 日志归档选项、执行完整的数据库恢复需要在MOUNT状态下
多路备份control要在pfile中修改参数，必须shutdown