单选题The user is trying to execute a SELECT statement. Which of the following background processes will obtain data from a disk for the user?（）A DISPATCHER B USER C SERVER D LGWR EDBW0

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单选题

The user is trying to execute a SELECT statement. Which of the following background processes will obtain data from a disk for the user?（）

DISPATCHER

USER

SERVER

LGWR

DBW0

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第1题

The Oracle Shared Server architecture reduces memory usage by reducing the number of server processes required. To process a request for a server process， the following tasks are performed： 1.A shared server picks up the request from the request queue and processes the request. 2.The dispatcher retrieves the response from the response queue. 3.A user sends a request to its dispatcher. 4.The dispatcher returns the response to the user. 5.The shared sever places the response on the calling dispatcher’s response queue. 6.The dispatcher places the request into the request queue in the SGA. Put the above task in the order in which they are performed.（）A、3，1，6，2，5，4B、3，6，1，5，2，4C、3，1，2，3，4，5D、6，1，3，5，2，4E、6，3，1，2，4，5F、6，3，1，2，5，4

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第2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?（）A、User processB、Server processC、System Monitor (SMON)D、Process Monitor (PMON)E、Checkpoint process (CKPT)

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第3题

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

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第4题

The user is trying to execute a SELECT statement. Which of the following background processes will obtain data from a disk for the user?（）A、DISPATCHER B、USER C、SERVER D、LGWR E、 DBW0

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第5题

A user issues a SELECT command against the Oracle database. Which of the following choices describes a step that Oracle will execute in support of this statement?（）A、Acquire locks on table queried B、Generate redo for statement C、Fetch data from disk into memory D、Write changes to disk

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第6题

User A issues the command: LOCK TABLES pets READ; Which command can User B execute against the pets table?（）A、UPDATE pets…B、SELECT….FROM petsC、INSERT INTO pets…D、ALTER TABLE pets…

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第7题

Which four occur during the processing of a request using Oracle Shared Server？（）A、The dispatcher returns the response to the user.B、The dispatcher places the request into the request queue.C、The shared server places the response in the response queue.D、The response is handed off to the next available dispatcher.E、A shared server picks up the request from the request queue and processes the request.

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单选题The user is trying to execute a SELECT statement. Which of the following background processes will obtain data from a disk for the user?（）A DISPATCHER B USER C SERVER D LGWR E DBW0

题目

更多“单选题The user is trying to execute a SELECT statement. Which of the following background processes will obtain data from a disk for the user?（）A DISPATCHER B USER C SERVER D LGWR E DBW0”相关问题

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