单项选择题
You perform a backup using the following BACKUP command: RMAN> BACKUP AS COMPRESSED BACKUPSET DATABASE,Which statement is true of this command?（）
A.A different procedure is required to restore a database from compressed backups
B.The AS COMPRESSED clause of the BACKUP command provided by RMAN is used to create compressed backup sets and image copies.
C.Using this command to create backups minimizes the bandwidth consumed.
D.Using this command to create backups improves the performance of the backup process
相关考题
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单项选择题
YouareworkingontheAPPDBdatabaseasaDBA.ThedatabasehasadefaultFlashbackDataArchiveDFLA1createdonit.YouissuedthefollowingcommandtodroptheFlashbackArchiveFLA1:DROPFLASHBACKARCHIVEfla1,Whatistheeffectofthiscommand?（）
A.The Flashback Archive FLA1 is dropped only if it is empty.
B.The tablespace having Flashback Archive is dropped.
C.The Flashback Archive FLA1 is dropped after moving the existing data in it to the default Flashback Archive.
D.The Flashback Data Archive and historical data are dropped. -
单项选择题
ouaremanaginganOracleDatabase11gdatabase.YouwanttotakethebackupofMULT_DATA,abigfiletablespaceofsize100TBontapedrive,butyouhavetapedrivesofonly10GBeach.Whichmethodwouldaccomplishthetaskquicklyandefficiently?（）
A.parallel image copy backup
B.backup with MAXPIECESIZE configured for the channel
C.parallel backup with MAXPIECESIZE configured for the channel
D.intrafile parallel backup -
单项选择题
Whatistheimplicationofthiscommand?（）
A.The command produces an error because the retention time cannot be reduced.
B.All historical data is retained but the subsequent flashback data archives are maintained for only three years.
C.All historical data is purged and the new flashback data archives are maintained for three years.
D.All historical data older than three years is purged from the flashback archive FLA1.
