单选题Flushing dirty buffers out of the buffer cache is influenced to the greatest extent by which of the following process?（）A ARCH B SMON C LGWRD SERVER

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单选题

Flushing dirty buffers out of the buffer cache is influenced to the greatest extent by which of the following process?（）

ARCH

SMON

LGWR

SERVER

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第1题

单选题Flushing dirty buffers out of the buffer cache is influenced to the greatest extent by which of the following process?（）A ARCH B SMON C LGWRD SERVER

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第2题

单选题Which background process is responsible for writing the dirty buffers from the write list to the data files during a checkpoint？（）A CKPTB SMONC LGWRD DBWnE ARCn

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第3题

单选题Note the functionalities of various background processes： 1：Perform recovery at instance startup. SMON 2：Free the resources used by a user process when it fails. PMON 3：Cleanup the database buffer cache when a process fails. PMON 4：Dynamically register database services with listeners. PMON 5：Monitor sessions for idle session timeout. PMON 6：Cleanup unused temporary segments. SMON 7：Record the checkpoint information in control file. CKPT Which option has the correct functionalities listed for a background process（）A Checkpoint （CKPT）： 1， 2， 5B System Monitor （SMON）： 1， 6C Process Monitor （PMON）： 4， 6， 7D Database Writer （DBWR）： 1， 3， 4

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第4题

单选题Which is the correct description of a pinned buffer in the database buffer cache（）A The buffer is currently being accessed.B The buffer is empty and has not been used.C The contents of the buffer have changed and must be flushed to the disk by the DBWn process. D The buffer is a candidate for immediate aging out and its contents are synchronized with the block contents on the disk.

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第5题

单选题Automatic Shared Memory Management （ASMM） has been enabled for your database instance. Theinitialization parameters for the components that are managed by ASMM are not set. After observing theeffects of ASSM， you executed the following command： SQL> ALTER SYSTEM SET DB_CACHE_SIZE = 100M； Which statement is true in this scenario（）A The minimum memory size for the database buffer cache is set to 100 mb.B The maximum memory size that can be obtained by the database buffer cache during ASMM is set to100 mbC The minimum memory size allocated for a server process in the database buffer cache in dedicatedmode is set to 100 mb.D The maximum memory size from the database buffer cache that can be released for dynamicdistribution during ASMM is set to 100 mb

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第6题

多选题Which two statements about the background process of thedatabase writerare true（）AIt is possible to have multiple database writers in an Oracle instance.BIt writes dirty buffers， if any， to data files whenever a checkpoint occurs.CIt writes dirty buffers， if any， to data files whenever a transaction commits.DIt writes dirty buffers， if any， to data files before the log writer （LGWR） writes.

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第7题

单选题Your database interface is running. A user SCOTT starts a SQL *Plus session， and issues the following query： SQL> SELECT * FROM sales； Which process would retrieve the result from the database and return it to the client program？（）AUser processBServer processCSystem Monitor （SMON）DProcess Monitor （PMON）ECheckpoint process （CKPT）

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单选题Flushing dirty buffers out of the buffer cache is influenced to the greatest extent by which of the following process?（）A ARCH B SMON C LGWRD SERVER

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