多项选择题

Your database is configured in NOARCHIVELOG mode. All the control files have been lost due to a hard disk failure but the data files are not lost. You have the closed whole database backup available to you. Which two statements are true in this scenario？（）

A.The instance aborts.
B.The database cannot be recovered.
C.The database can be recovered by restoring the control files from the backup.
D.The database remains opened and you have to shut it down with the ABORT option.
E.The database can be restored till the point of the last closed whole database backup.

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热门试题

多项选择题Whichtwooperationsrequireundodata？（）

A.committing a transaction
B.rolling back a transaction
C.recovering from failed transactions
D.recording a transaction to redo log files
E.rolling forward during instance recovery

多项选择题WhichtwostatementsaretrueregardingthedatabaseinARCHIVELOGmode？（）

A.You have to shut down the database to perform the backups.
B.Archiving information is written to the data files and redo log files.
C.You can perform complete database backups without closing the database.
D.Online redo log files have to be multiplexed before putting the database in ARCHIVELOG mode.
E.All the previous database backups become invalid after you configure the database to ARCHIVELOG mode.

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

单项选择题WhichstepdoyouneedtoperformtoenableauserwiththeSYSDBAprivilegetologinasSYSDBAiniSQL*Plus？（）

A.The user must be granted the database administrator （DBA） privilege.
B.The user must be listed in the password file for the authentication.
C.No special setup is needed for the user to connect as SYSDBA in iSQL*Plus.
D.Set up a user in the Oracle Application Server Containers for J2EE （OC4J） user manager，and grant the webDba role to the user.

单项选择题Accordingtoyourbackupstrategy，youperformedanincrementallevel0backupofyourdatabase.Whichstatementregardingthisbackupistrue？（）

A.The backup is similar to image copy.
B.The backup contains all used data blocks.
C.The backup contains only unused data blocks.
D.The backup contains all data blocks changed since the last incremental level 1 backup.