单项选择题
A.latency across a long distance network
B.high-speed backup of large video files
C.increase levels of data protection with enterprise class data integrity
D.improve backup and recovery operations without changing existing backup processes,procedures or policies
多项选择题 These are the details about V$FLASHBACK_DATABASE_STAT： SQL> DESC V$FLASHBACK_DATABASE_STAT Name Null？ Type ------------- -------- -------------- BEGIN_TIME DATE END_TIME DATE FLASHBACK_DATA NUMBER DB_DATA NUMBER REDO_DATA NUMBER ESTIMATED_FLASHBACK_SIZE NUMBER Which two statements regarding the V$FLASHBACK_DATABASE_STAT view are true？ （）
单项选择题 Which tuning tool recommends how to optimize materialized views so that these views can take advantage of the general query rewrite feature?（）
单项选择题 Acustomerhasfour2-way2Ufront-endwebserversthatarecurrentlyrunningat15%CPUutilization.Theseserversprovidepointsofaccessforusersworldwide，andvolumeisexpectedtotripleinthenextsixmonthsandaggressivelygrowthereafter.Theywanttoupgradethesesystemstonewertechnologyandstaywithinthe8Uofrackspacethattheyarereplacing.Whichsolutionwouldfitthecustomer’srequirements？（）