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问题:

[单选] Flashback Database is enabled in your Oracle 10g database. One of your database users erroneously purged an important table residing in his schema. The table was purged sometime between 10:00 P.M. and 10:30 P.M. The next day, you decide to flash back the database. Before you flash back the database, you want to ensure that you have all the necessary flashback data. Which dynamic performance view must you use to determine whether you have the required flashback data to recover the purged table?()

A .  V$DATABASE
B .  V$UNDOSTAT
C .  V$FLASHBACK_DATABASE_LOG
D .  V$FLASHBACK_DATABASE_STAT

With which three other business initiatives does Enterprise Asset Management-a business paradigm-integrate strategic planning?() sales。 operations。 maintenance。 balance sheet。 human resources。 capital investment decision-making。 在施工合同履行过程中,发包人要取消合同任何一项工作,应由监理人发布变更指示,按变更处理,但被取消的工作可以由发包人雇佣其他承包人实施。 Using the Tivoli Dynamic Workload Console, what are two ways to  change the priority of a job?()  Open the "Set Priority" panel from the job properties.。  Change the priority of the job stream that contains the job.。  Select the corresponding action from the Monitor jobs task panel.。  Open the job stream properties and drill down to the job priority  panel.。  The priority of a job can only be changed from the Workload  Designer.。 You are managing an Oracle Database 11g ASM instance with a disk group dg01 having three disks. One of the disks in the disk group becomes unavailable because of power failure. You issued the following command to change the DISK_REPAIR_TIME attribute from 3.6 hours to 5 hours:   ALTER DISKGROUP dg01 SET ATTRIBUTE ’disk_repair_time’ = ’5h’;   To which disks in the disk group will the new value be applicable?()  all disks in the disk group。  all disks that are currently in OFFLINE mode。  all disks that are not currently in OFFLINE mode。  all disks in the disk group only if all of them are ONLINE。 单吸离心泵轴向推力产生的主要原因是叶轮缺乏()。 Flashback Database is enabled in your Oracle 10g database. One of your database users erroneously purged an important table residing in his schema. The table was purged sometime between 10:00 P.M. and 10:30 P.M. The next day, you decide to flash back the database. Before you flash back the database, you want to ensure that you have all the necessary flashback data. Which dynamic performance view must you use to determine whether you have the required flashback data to recover the purged table?()
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