99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

多項選擇題

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.

微信掃碼免費搜題