【简答题】Undocumented workers became the target of “Operation Safe Travel” because ________. A) evidence was found that they were potential terrorists B) most of them worked at airports under threat of terrori...
【单选题】One of the tablespaces is read-only in your database. The loss of all control files forced you to re-create the control file. Which operation do you need to perform after re-creating the control file ...
A.
drop and re-create the read-only tablespaces
B.
rename the read-only data files to their correct file names
C.
change the tablespace status from read/write to read-only
D.
re-create the read-only tablespace because it is automatically removed