单选题You are designing the physical database layout on your host machine. What is the relationship between tablespaces and datafiles in the Oracle database?（）A One tablespace has only one datafileB Many tablespaces can share one datafileC One tablespace can

题目

单选题

You are designing the physical database layout on your host machine. What is the relationship between tablespaces and datafiles in the Oracle database?（）

One tablespace has only one datafile

Many tablespaces can share one datafile

One tablespace can have many datafiles

One datafile can contain many tablespaces

参考答案和解析

正确答案： A

解析：暂无解析

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第1题

You lost the index tablespace in your database. You are not able to use tablespace point/x7fin/x7ftime recovery on the index tablespace. What could be the reason for this？（）A、The index tablespace contains bitmap indexes.B、The index tablespace contains more than one data file.C、The index tablespace supports only complete recovery.D、The index tablespace is not a dictionarymanaged tablespace.E、There is a dependency relationship between a table and its indexes.

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第2题

You lost the index tablespace in your database. You are not able to use tablespace point-in-time recovery on the index tablespace. What could be the reason for this？（）A、 The index tablespace contains bitmap indexes.B、 The index tablespace contains more than one data file.C、 The index tablespace supports only complete recovery.D、 The index tablespace is not a dictionary-managed tablespace.E、 There is a dependency relationship between a table and its indexes.

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第3题

There is a problem with one of the disks used for your database and your system administrator informs you that the disk needs to be replaced. The replacement disk will not be available until tomorrow. There was only one data file on this disk； it belongs to the USERS tablespace in your PROD database. Your PROD database runs in ARCHIVELOG mode and nightly online backups are taken. The users need to be able to access the data in the USERS tablespace before the replacement disk arrives. You have already taken the USERS tablespace offline and have restored the data file from last night’s backup to a new disk. Which additional steps are required in order to make the USERS tablespace available？（）A、Only bring the tablespace back online.B、Only recover the tablespace and then bring the tablespace back online.C、Shut down the database， recover the data file and then start up the database.D、Issue the ALTER DATABASE RENAME FILE command， recover the tablespace， and then bring the tablespace online.E、Recover the tablespace， issue the ALTER DATABASE RENAME FILE command， and then bring the tablespace online.

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第4题

Your boss at Certkiller .com wants you to clarify Oracle 10g. Which condition in your database forces you to perform only consistent backups？（）A、The database is in mount state.B、One of the tablespaces is offline.C、One of the tablespaces is read only.D、The database operates in ARCHIEVELOG mode.E、The database operates in NOARCHIEVELOG mode.

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第5题

You are designing the physical database layout on your host machine. What is the relationship between tablespaces and datafiles in the Oracle database?（）A、One tablespace has only one datafileB、Many tablespaces can share one datafileC、One tablespace can have many datafilesD、One datafile can contain many tablespaces

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第6题

Which three statements are true about logical structures of the Oracle database（）A、Each segment contains one or more extents.B、Multiple tablespaces can share a single data file.C、A data block is the smallest unit of input/output （I/O） in data files.D、It is possible to have tablespaces of different block sizes in a database.E、Each data block in the database always corresponds to one operating system block.

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第7题

Your ARCHIVELOG-mode database has lost three datafiles and shut down. One is assigned to the SYSTEM tablespace and two are assigned to the USERS tablespace. You can choose from the following steps to recover your database： a. Restore the three database datafiles that were lost. b. Issue the Startup Mount command to mount the database. c. Issue the alter database open command. d. Issue the alter database open resetlogs command. e. Recover the database using the recover database command. f. Recover the datafiles with the recover datafile command. g. Take the datafiles offline. Which is the correct order of these steps in this case？（）A、a， b， e， cB、b， e， dC、a， b， d， cD、b， g， c， fE、a， b， d， f

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单选题You are designing the physical database layout on your host machine. What is the relationship between tablespaces and datafiles in the Oracle database?（）A One tablespace has only one datafileB Many tablespaces can share one datafileC One tablespace can

题目

参考答案和解析

更多“单选题You are designing the physical database layout on your host machine. What is the relationship between tablespaces and datafiles in the Oracle database?（）A One tablespace has only one datafileB Many tablespaces can share one datafileC One tablespace can”相关问题

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