单选题Which is the memory area that is created when a dedicated server process is started, and contains data and control information for that server process?()ASGABPGACShared PoolDStreams Pool

单选题
Which is the memory area that is created when a dedicated server process is started, and contains data and control information for that server process?()
A

SGA

B

PGA

C

Shared Pool

D

Streams Pool


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单选题Which is the memory area that is created when a dedicated server process is started, and contains data and control information for that server process?()ASGABPGACShared PoolDStreams Pool

单选题You work as a database administrator for Certkiller .com. You find that the database performance degrades while you backup the Certkiller database using Recovery Manager (RMAN). The Certkiller database is running in shared server mode. The database instance is currently using 60% of total operating system memory. You suspect the shared pool fragmentation to be the reason.  Which action would you consider to overcome the performance degradation?()AConfigure Java Pool to cache the java objects.BConfigure Streams Pool to enable parallel processing.CIncrease Shared Pool size to cache more PL/SQL objects.DIncrease Database Buffer Cache size to increase cache hits.EConfigure Large Pool to be used by RMAN and shared server.FIncrease the total System Global Area (SGA) size to increase memory hits.

单选题Which statement is true regarding Oracle Shared Server architecture?()AA dispatcher can support multiple client connects concurrently while a shared server process can be dedicated to only one dispatcher. BUnder the Oracle Shared Server architecture, client-user processes connect to shared user processes.CEach dispatcher has its own request queue, which is monitored every three seconds by the dispatcher. DOracle Shared Server required Oracle Net Service even if the client and shared server processes reside on the same machine.

单选题Click the Exhibit button and examine the diagram, which illustrates the components performing tasks within an Oracle Shared Sever environment. Which task is being performed by component 4?()AThe PMON process registers the request in the response queue.BA shared sever places the process request in the response queue.CA request within the request queue is processed by an idle shared server process.DA dispatcher assigns a request from the request queue to and idle shared server process.

多选题Which of the following correctly describe steps in the OSI data encapsulation process?()ATransport layer divides a data stream into segments adds reliability flow control informationBData link layer adds physical source destination address an FCS to the segmentCPackets are created when the network layer encapsulate a frame with source destination host address protocol related control informationDPackets are created when the network layers adds layers 3 address control information to a segmentEThe presentation layer translated bits into bits into voltages for transmission across the physical link

单选题You noticed that large memory allocations for the Oracle backup and restore operations are causing a performance overhead on the shared pool. Which memory structure would you configure to avoid this performance overhead?()A recycle buffer cacheB large poolC streams poolD keep buffer cacheE redo log buffer

多选题Which three are true about the large pool for an Oracle database instance that supports shared serverconnections?()AAllocates memory for RMAN backup and restore operationsBAllocates memory for shared and private SQL areasCContains a cursor area for storing runtime information about cursorsDContains stack spaceEContains a hash area performing hash joins of tables