多项选择题Which two statements correctly describe the relation between a data file and the logical databasestructures()

A.An extent cannot spread across data files.
B.A segment cannot spread across data files.
C.A data file can belong to only one tablespace.
D.A data file can have only one segment created in it.
E.A data block can spread across multiple data files as it can consist of multiple operating system (OS) blocks.


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2.单项选择题Identify the logical structure that will never have more than one data segment created for it.()

A.external table
B.partitioned table
C.partitioned index
D.nonclustered table
E.global temporary table

3.多项选择题Which three statements are true about logical structures of the Oracle database()

A.Each segment contains one or more extents.
B.Multiple tablespaces can share a single data file.
C.A data block is the smallest unit of input/output (I/O) in data files.
D.It is possible to have tablespaces of different block sizes in a database.
E.Each data block in the database always corresponds to one operating system block.

5.多项选择题Which two statements about the background process of thedatabase writerare true() 

A.It is possible to have multiple database writers in an Oracle instance.
B.It writes dirty buffers, if any, to data files whenever a checkpoint occurs.
C.It writes dirty buffers, if any, to data files whenever a transaction commits.
D.It writes dirty buffers, if any, to data files before the log writer (LGWR) writes.

6.单项选择题

View the Exhibit and identify the component marked with a question mark. ()

A.Checkpoint (CKPT)
B.Process Monitor (PMON)
C.Archiver Processes (ARCn)
D.Recoverer Process (RECO)
E.Memory Manager process (MMAN)

9.多项选择题Which two statements are true about Shared SQL Area and Private SQL Area()

A.Shared SQL Area will be allocated in the shared pool.
B.Shared SQL Area will be allocated when a session starts.
C.Shared SQL Area will be allocated in the large pool always.
D.Private SQL Area will be allocated in the Program Global Area (PGA) always.
E.Shared SQL Area and Private SQL Area will be allocated in the PGA or large pool.
F.The number of Private SQL Area allocations is dependent on the OPEN_CURSORS parameter.

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