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【单选题】

Automatic data conversion will occur if which of the following happens?（）

A、The client and server have different NLS_LANGUAGE settings.

B、The client and server character sets are not the same, and the database character set is not a strict superset of the client character set.

C、The client and server are in different time zones.

D、The client requests automatic data conversion.

E、The AUTO_CONVERT initialization parameter is set to TRUE.

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第1题
[多选题] Which two are the prerequisites to enable Flashback Data Archive?（） (Choose two.)

A、Database must be running in archivelog mode.  B、Automatic undo management must be enabled.  C、Undo retention guarantee must be enabled.  D、The tablespace on which the Flashback Data Archive is created must be managed with Automatic Segment Space Management (ASSM).  

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第2题
[多选题] Which are the two prerequisites before setting up Flashback Data Archive? （）(Choose two.)

A、Flash recovery area must be defined  B、Undo retention guarantee must be enabled.  C、Database must be running in archivelog mode.  D、Automatic undo management must be enabled.  E、The tablespace in which the Flashback Data Archive is created must have automatic segment space Management (ASSM).  

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第3题
[填空题] CONV是（）告警，它会引起一个或多个模块退出服务。

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第4题
[判断题] 命令w=conv（u，v）表示多项式u和v相乘。

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第5题
[单选题] You are administering a database stored in Automatic Storage management (ASM). The files are storedin the DATA disk group. You execute the following command:SQL > ALTER DISKGROUP data ADD ALIAS ‘+data/prod/myfile.dbf’ FOR ‘+data.231.45678’;What is the result?（）

A、The file ‘+data.231.54769’ is physically relocated to ‘+data/prod’ and renamed as ‘myfile.dbf’.  B、The file ‘+data.231.54769’ is renamed as ‘myfile.dbf’, and copied to ‘+data/prod’.  C、The file ‘+data.231.54769’ remains in the same location and a synonym 'myfile.dbf' is created.  D、The file ‘myfile.dbf’ is created in ‘+data/prod’ and the reference to ‘+data.231.54769’ in the data dictionary removed.  

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第6题
[] In your multitenant container database (CDB) containing pluggable databases (PDB), users complain about performance degradation. How does real-time Automatic database Diagnostic Monitor (ADDM) check performance degradation and provide solutions?（） In your multitenant container database (CDB) containing pluggable databases (PDB), users complain about performance degradation. How does real-time Automatic database Diagnostic Monitor (ADDM) check performance degradation and provide solutions?（）

A、A. It collects data from SGA and compares it with a preserved snapshot.  B、B. It collects data from SGA, analyzes it, and provides a report.  C、C. It collects data from SGA and compares it with the latest snapshot.  D、D. It collects data from both SGA and PGA, analyzes it, and provides a report  

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第7题
[单选题] You notice that the performance of your production 24/7 Oracle database significantly degraded.Sometimes you are not able to connect to the instance because it hangs. You do not want to restart thedatabase instance.How can you detect the cause of the degraded performance?（）

A、Enable Memory Access Mode, which reads performance data from SGA.  B、Use emergency monitoring to fetch data directly from SGA analysis.  C、Run Automatic Database Diagnostic Monitor (ADDM) to fetch information from the latest Automatic Workload Repository (AWR) snapshots.  D、Use Active Session History (ASH) data and hang analysis in regular performance monitoring.  E、Run ADDM in diagnostic mode.  

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第8题
[单选题] Which of the following is an advantage of RAID 0？（）

A、Mirrors data  B、Redundancy  C、Speed  D、Automatic hot spare  

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第9题
[多选题] Which two are the prerequisites to enable Flashback Data Archive？（）

A、 Database must be running in archivelog mode.  B、 Automatic undo management must be enabled.  C、 Undo retention guarantee must be enabled.  D、 The tablespace on which the Flashback Data Archive is created must be managed with Automatic Segment Space Management （ASSM）.  

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