网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
多选题
Which three statements are true about database recovery operations？（）
A
Damaged or lost data files are restored from backups.
B
Redo log file entries are used to roll forward the database.
C
Undo segments are used to roll back any uncommitted transactions.
D
Transactions that were active when the failure occurred are restarted.
E
Transactions that were active when the failure occurred are automatically committed during the recover procedure.
参考答案
参考解析
解析：
暂无解析
更多 “多选题Which three statements are true about database recovery operations？（）ADamaged or lost data files are restored from backups.BRedo log file entries are used to roll forward the database.CUndo segments are used to roll back any uncommitted transactions.DTransactions that were active when the failure occurred are restarted.ETransactions that were active when the failure occurred are automatically committed during the recover procedure.” 相关考题
考题
Which three statements are true about windows? ()(Choose three.)
A. Only one window can be open at any given timeB. Consumer groups are associated with windowsC. Windows work with job classes to control resource allocationD. The database service name must be provided during windows creationE. Windows can automatically start job or change resource allocation among jobs for various time periods.
考题
Which two statements are true about the RMAN validate database command?()
A. It checks the database for intrablock corruptions.B. It can detect corrupt pfiles.C. It can detect corrupt spfiles.D. It checks the database for interblock corruptions.E. It can detect corrupt block change tracking files.
考题
Which three statements about OSPF areas are true?（）A、Areas introduce a boundary on the link - state updates.B、Areas are logical definitions specific to any given router.C、All routers within an area have the exact link - state database.D、The calculation of the Dijkstra algorithm on a router is limited to changes within an area.E、The area designated router will always have a priority of 0.
考题
Which three statements are true about terms in a policy?（）A、The order of the terms in a policy is irrelevantB、The action is specified in a then statementC、Ters are optional in a policyD、The match condition can be identified with a from statementE、Every policy must contain at least one term
考题
Which two statements are true about the RMAN validate database command?（）A、It checks the database for intrablock corruptions.B、It can detect corrupt pfiles.C、It can detect corrupt spfiles.D、It checks the database for interblock corruptions.E、It can detect corrupt block change tracking files.
考题
Which of the following statements is NOT true about RMAN？（）A、It improves usability by enabling you to reuse the scripts to perform recovery operations.B、It detects block corruption while restoration and recovery operations.C、It enables you to perform block media recovery.D、It is capable to recover through unrecoverable operations， with only full database backups.
考题
You are managing an Oracle Database 11g database. The database is open， and you plan to perform Recovery Manager （RMAN） backups. Which three statements are true about these backups（）A、The backups would be consistent.B、The backups would be inconsistent.C、The backups would be possible only if the database is running in ARCHIVELOG mode.D、The backups would be possible only if the database is running in NOARCHIVELOG mode.E、The backups need to be restored and the database has to be recovered in case of a media failure
考题
You have to shut down the database instance with the ABORT option because of a hardware failure. Which statement is true about the subsequent opening of the database？（）A、The database would open normally.B、The database would not open， and it would stop at mount stage.C、The database would open after automatically performing instance recovery.D、The database would not open， and you have to perform database recovery to open it.
考题
To enable faster incremental backups， you enabled block change tracking for the database. Which two statements are true about the block change tracking file？（） A、 Multiple change tracking files can be created for a database.B、 The change tracking file must be created after the first level 0 backup.C、 RMAN does not support backup and recovery of the change tracking file.D、 The database clears the change tracking file and starts tracking changes again，after whole database restore and recovery operations.
考题
Which two statements are true about record groups?（）A、They are stored in the database. B、They are stored in local Forms memory. C、The type is specified explicitly at design time. D、The type is implied by when and how it is created.
考题
Which two statements about Flashback Query are true？（）A、It is generated by using the redo log files. B、It helps in row-level recovery from user errors.C、It can be performed to recover ALTER TABLE statements D、It fails when undo data pertaining to the transaction is overwritten.E、The database has to be opened with the resetlogs option after performing Flashback Query.
考题
Which three statements about subqueries are true? （）A、Asinglerowsubquerycanretrieveonlyonecolumnandonerow.B、Asinglerowsubquerycanretrieveonlyonerowbutmanycolumns.C、Amultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns.D、Amultiplerowsubquerycanbecomparedusingthe"；；"；operator.E、AsinglerowsubquerycanusetheINoperator.F、Amultiplerowsubquerycanusethe"；="；operator.
考题
多选题Which two statements about Flashback Query are true？（）AIt is generated by using the redo log files.BIt helps in row-level recovery from user errors.CIt can be performed to recover ALTER TABLE statementsDIt fails when undo data pertaining to the transaction is overwritten.EThe database has to be opened with the resetlogs option after performing Flashback Query.
考题
单选题You have to shut down the database instance with the ABORT option because of a hardware failure. Which statement is true about the subsequent opening of the database？（）A
The database would open normally.B
The database would not open， and it would stop at mount stage.C
The database would open after automatically performing instance recovery.D
The database would not open， and you have to perform database recovery to open it.
考题
单选题Which of the following statements is NOT true about RMAN？（）A
It improves usability by enabling you to reuse the scripts to perform recovery operations.B
It detects block corruption while restoration and recovery operations.C
It enables you to perform block media recovery.D
It is capable to recover through unrecoverable operations， with only full database backups.
考题
多选题Which three statements are true about logical structures of the Oracle database（）AEach segment contains one or more extents.BMultiple tablespaces can share a single data file.CA data block is the smallest unit of input/output （I/O） in data files.DIt is possible to have tablespaces of different block sizes in a database.EEach data block in the database always corresponds to one operating system block.
考题
多选题You are managing an Oracle Database 11g database. The database is open， and you plan to performRecovery Manager （RMAN） backups. Which three statements are true about these backups（）AThe backups would be consistent.BThe backups would be inconsistent.CThe backups would be possible only if the database is running in ARCHIVELOG mode.DThe backups would be possible only if the database is running in NOARCHIVELOG mode.EThe backups need to be restored and the database has to be recovered in case of a media failure.
考题
多选题To enable faster incremental backups, you enabled block change tracking for the database.Which two statements are true about the block change tracking file?（）AMultiple change tracking files can be created for a database.BThe change tracking file must be created after the first level 0 backup.CRMAN does not support backup and recovery of the change tracking file.DThe database clears the change tracking file and starts tracking changes again, after whole database restore and recovery operations.
考题
多选题Which three statements are true about the stages of database startup？（）AData files and redo log files can be renamed at the MOUNT stage.BControl files are read at the OPEN stage for the location of data files.CControl files are required to bring the database to the NOMOUNT stage.DData files and redo log files are made available to users at the OPEN stage.EData files and online redo log files are checked for consistency while opening the database
考题
多选题Which two statements about Recovery Manager （RMAN） backups are true？ （）AOnline redo log files can be backed up.BArchived redo log files are backed up.COnly used data blocks can be backed up as backup sets.DOnly consistent database backups can be performed.ERMAN backup can be taken only if the database is configured in ARCHIVELOG mode.
考题
多选题Which three statements are true concerning the multitenant architecture?（）AEach pluggable database (PDB) has its own set of background processes.BA PDB can have a private temp tablespace.CPDBs can share the sysaux tablespace.DLog switches occur only at the multitenant container database (CDB) level.EDifferent PDBs can have different default block sizes.FPDBs share a common system tablespace.GInstance recovery is always performed at the CDB level.
考题
多选题You are managing an Oracle Database 11g database. The database is open， and you plan to perform Recovery Manager （RMAN） backups. Which three statements are true about these backups（）AThe backups would be consistent.BThe backups would be inconsistent.CThe backups would be possible only if the database is running in ARCHIVELOG mode.DThe backups would be possible only if the database is running in NOARCHIVELOG mode.EThe backups need to be restored and the database has to be recovered in case of a media failure
考题
多选题Which three statements are true about Flashback Database?（）AFlashback logs are written sequentially, and are archived.BFlashback Database uses a restored control file to recover a database.CThe Oracle database automatically creates, deletes, and resides flashback logs in the Fast RecoveryArea.DFlashback Database can recover a database to the state that it was in before a reset logs operation.EFlashback Database can recover a data file that was dropped during the span of time of the flashback.FFlashback logs are used to restore to the blocks' before images, and then the redo data may be used to roll forward to the desired flashback time.
考题
多选题Which three statements about subqueries are true? （）AAsinglerowsubquerycanretrieveonlyonecolumnandonerow.BAsinglerowsubquerycanretrieveonlyonerowbutmanycolumns.CAmultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns.DAmultiplerowsubquerycanbecomparedusingthe；；；operator.EAsinglerowsubquerycanusetheINoperator.FAmultiplerowsubquerycanusethe；=；operator.
考题
多选题Which three statements are true about windows? （）(Choose three.)AOnly one window can be open at any given timeBConsumer groups are associated with windowsCWindows work with job classes to control resource allocationDThe database service name must be provided during windows creationEWindows can automatically start job or change resource allocation among jobs for various time periods.
考题
多选题Which three statements are true about windows？（）AOnly one window can be open at any given timeBConsumer groups are associated with windowsCWindows work with job classes to control resource allocationDThe database service name must be provided during windows creationEWindows can automatically start job or change resource allocation among jobs for various time periods.
考题
多选题To enable faster incremental backups, you enabled block change tracking for the database.Which two statements are true about the block change tracking file? （）(Choose two.)AMultiple change tracking files can be created for a database.BThe change tracking file must be created after the first level 0 backup.CRMAN does not support backup and recovery of the change tracking file.DThe database clears the change tracking file and starts tracking changes again, after whole database restore and recovery operations.
热门标签
最新试卷