单选题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)

单选题
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)


参考解析

解析: 检查点‖是一种数据结构,用于定义数据库的重做线程中的系统更改号(SCN)。 检查点被记录在控制文件和每个数据文件头中。它们是恢复操作的关键元素。 出现检查点时,Oracle DB 必须更新所有数据文件的头,以记录该检查点的详细信息。这是由CKPT进程完成的。CKPT 进程不会将块写入磁盘;该工作都是由DBWn执行。文件头中记录的SCN 可保证将该SCN 之前对数据库块进行的所有更改写入到磁盘中。Oracle Enterprise Manager 中的SYSTEM_STATISTICS监视器将显示统计信息DBWR 检查点,由其指示已完成的检查点请求的数目。

相关考题:

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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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Note the following functionalities of various background processes: 1. Record the checkpoint information in data file headers. 2. Perform recovery at instance startup. 3. Cleanup unused temporary segments. 4. Free the resources used by a user process when it fails. 5. Dynamically register database services with listeners. 6. Monitor sessions for idle session timeout. Which option has the correct functionalities listed for a background process()AArchiver Process (ARCn): 1, 2, 5BSystem Monitor Process (SMON): 1, 4, 5CProcess Monitor Process (PMON): 4, 5, 6DDatabase Writer Process (DBWn): 1, 3, 4

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.

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

单选题Note the following functionalities of various background processes:  1:Record the checkpoint information in data file headers. CKPT  2:Perform recovery at instance startup. SMON  3:Cleanup unused temporary segments. SMON  4:Free the resources used by a user process when it fails.  5:Dynamically register database services with listeners.  6:Monitor sessions for idle session timeout.  Which option has the correct functionalities listed for a background process()AArchiver Process (ARCn):1, 2,5BSystem Monitor Process (SMON):1,4,5CProcess Monitor Process (PMON):4,5,6DDatabase Writer Process (DBWn):1,3,4

单选题What is an advantage of multiple software process running in the Junos OS?()AEach process has its own protected memory spaceBEach process is started manually by the user at bootCAall processes are dependent on each otherDMultiple processes allow each routing protocol to be independent

多选题Process-level redundancy is implemented by a system manager process that creates the standby process.What two functions are provided by the system-level process called Qnet Symlink Manager (QSM)?()Abacking up the information for the broken connectionsBprovides common information for connecting processes and servicesCdetection of a failed connectionDprovides an abstract name for a process or serviceEdistribution of symbolic link information

单选题You have set Tablespace Full Metrics Threshold values for the USERS tablespace as follows: Warning (%): 90  Critical (%): 95  Which background process is responsible for issuing alerts when the threshold is crossed()ASystem monitor (SMON)BProcess monitor (PMON)CMemory manager process (MMAN)DManageability Monitor process (MMON)