多项选择题
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.
相关考题
-
单项选择题
Anyonewhoknowsjustthehostnameandthelistenernamecanhavefullcontroloverthelistener.Theycanstopthelistenerandalsoobtaindetailedinformationaboutthelistener，database，andtheconfigurationoftheapplication.Howwouldyouavoidthisscenario？（）
A.lock the listener
B.hide the listener
C.create multiple listeners
D.run listener on a remote client
E.set a password for the listener
F.store listener.ora in a non-default location -
单项选择题
Youareworkingona24x7（available24hoursperday，7daysperweek）productiondatabase.Anoperatingsystem（OS）userdeletesthealertlogfileaccidentally.Whichstatementinthisscenarioistrue？（）
A.The database crashes.
B.The DBA needs to re-create the file.
C.The file gets re-created automatically.
D.The file gets restored automatically from the last backup.
E.The DBA needs to perform a complete database recovery.
F.The DBA needs to perform an incomplete database recovery. -
单项选择题
Becauseofapoweroutage，instancefailurehasoccurred.Fromwhatpointintheredologdoesrecoverybeginandwheredoesitend？（）
A.current redo log and inactive redo log
B.checkpoint position to end of redo log
C.beginning of redo log to end of redo log
D.all redo logs before the point of last commit
E.beginning of redo log to checkpoint position
