多项选择题
A.Execute the ALTER DATABASE ARCHIVELOG statement
B.Select ARCHIVELOG option in the database control and restart the database to apply the changes.
C.Shut down and start the instance, and in the NOMOUNT state execute the ALTER DATABASE ARCHIVELOG statement.
D.Shut down and start the instance, mount the database, then execute the ALTER DATABASE ARCHIVELOG statement.
单项选择题 You work as a database administrator for Certkiller .com. Your database is in NOARCHIVELOG mode. The database has been configured with three redo logs groups， and there have been five log switches. You lost one non-system-critical data file from your database. Which method would you use to recover the data file？（）
多项选择题 YouworkasadatabaseadministratorforCertkiller.com.Inthemiddleofatransaction，ausersessionwasabnormallyterminatedbuttheinstanceisstillupandthedatabaseisopen.Whichtwostatementsaretrueinthisscenario？（）
单项选择题 YourbossatCertkiller.comwantsyoutoclarifyOracle10g.Whichconditioninyourdatabaseforcesyoutoperformonlyconsistentbackups？（）