单项选择题
A.Control file
B.Password file
C.Parameter file
D.Online redo log file
E.Listener controller file
F.Server parameter file
多项选择题 YouworkasadatabaseadministratorforCertkiller.com.Youwanttocreateyourdatabasewiththeautomaticundomanagementfeatureenable.Whichtwotasksmustyouperformtoachievethis？（）
单项选择题 You work as a database administrator for Certkiller .com. Because of space constraints， you decided to manually shrink the table. You executed the ALTER TABLE ....SHRINK SPACE statement to shrink the space and you receive an error as follows： ERROR at Line 1： ORA-10635： Invalid segment ortablespacetype What could be the reason？（）
单项选择题 YouworkasadatabaseadministratorforCertkiller.com.YourdatabaseisinNOARCHIVELOGmodeandyouwanttoperformabackup.Whichtypeofbackupwouldbeappropriateinthiscase？（）