多项选择题

In which two cases would you perform only consistent backup？（）

A.You are working on a database where downtime is not tolerated.
B.You are working on a database where downtime can be tolerated.
C.You are working on a database that operates in ARCHIVELOG mode.
D.You are working on a database that operates in NOARCHIVELOG mode.
E.You are working on a database where all the tablespaces are locally managed.
F.You are working on a database where control files and redo log files are multiplexed.
G.You are working on a database where control files and redo log files are not multiplexed.

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单项选择题

Due to media failure you lost one of the data files belonging to the USERS tablespace， and the tablespace is not available to use. Which statement regarding the status of the database is true？（）

A.The database remains open.
B.The database gets dismounted.
C.The database becomes read only.
D.The database instance gets aborted.
E.The database gets shut down automatically.
F.The status of the database depends on the status of the USERS tablespace.

多项选择题

On which three can you use Recovery Manager （RMAN） to perform incremental backup？（）

A.data files
B.control files
C.tablespaces
D.password file
E.parameter file
F.whole database
G.flashback log file
H.archived log files
I.change tracking file

单项选择题

As a database administrator you spend a lot of time observing and setting various storage parameter values for your application tables in order to gain performance benefits. Which task would you perform to reduce this overhead？（）

A.Coalesce the application tables at a regular interval.
B.Export and Import the application tables a regular interval.
C.Drop and recreate the application tables at a regular interval.
D.Move the application tables to a tablespace with less space usage.
E.Distribute the application tables across multiple tablespaces depending on usage.
F.Move the application tables to automatic segment space management tablespace.