You want to take the backup of the USERS tablespace. It has a single data file of 900 MB. You have tape drives of 300 MB each. The SBT channel is configured for Recovery Manager (RMAN). To accomplish the backup, you issued the following RMAN command: RMAN> BACKUP SECTION SIZE 300M TABLESPACE users; Which two statements are true about the execution of the above command? ()(Choose two.)
AThe backup piece size will be limited to 300 MB
BThe RMAN uses multiplexing to perform backup
CThe operation is accomplished using the default channel available
DThe RMAN parallelizes the backup although the parallelism is not set for a channel
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You want to convert your existing non-ASM files to ASM files for the database PROD. Which method or command would you use to accomplish this task?()
A、 Data Pump Export and Import
B、 conventional export and import
C、 the CONVERT command of RMAN
D、 the BACKUP AS COPY. command of RMAN
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用Linux ls-al命令列出下面的文件列表,(33)是块设备文件。
A.drwx----1 hel users 1024 Sep 10 08:10 aaa
B.-rw----2 hel-s users 56 Sep 09 11:05 bbb
C.brw----2 hel-s users 56 Sep 09 11:05 ccc
D.1rwx----1 hel users 2024 Sep 12 08:12 ddd
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在Windows Server 2003下若选择安全登录,则首先需要按(38)组合键。
A.Shiff+Alt+Esc
B.Ctrl+Alt+Tab
C.Ctrl+Shiff
D.Ctrl+Alt+Delete
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The RECYCLEBIN parameter is set to ON for your database. You drop a table, PRODUCTS, from the SCOTT schema. Which two statements are true regarding the outcome of this action? ()(Choose two)
AAll the related indexes and views are automatically dropped
BThe flashback drop feature can recover only the table structure
COnly the related indexes are dropped whereas views are invalidated
DThe flashback drop feature can recover both the table structure and its data
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Which three statements are true regarding the functioning of the Autotask Background Process (ABP)?()
AIt creates jobs without considering the priorities associated with them.
BIt translates tasks into jobs for execution by the scheduler.
CIt determines the list of jobs that must be created for each maintenance window.
DIt is spawned by the MMON background process at the start of the maintenance window.
EIt maintains a repository in the SYSTEM tablespace to store the history of the execution of all tasks.