多选题our database is in the MOUNT state and you execute the following command to open it： ALTER DATABASE OPEN What two actions are performed as a result of this command？（）AAll control files are opened.BAll redo log files are openedCThe password file is op
题目
多选题
our database is in the MOUNT state and you execute the following command to open it： ALTER DATABASE OPEN What two actions are performed as a result of this command？（）
A
All control files are opened.
B
All redo log files are opened
C
The password file is opened.
D
The parameter file is opened.
E
All online data files are opened.