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单项选择题

On Monday， you dropped the DEPT table from your schema and then you re­created the DEPT table in your schema. On Wednesday， you have a requirement to restore the DEPT table from the recycle bin. Which statement is correct？（）

A.You can restore the DEPT table by using the Oracle Flashback Drop feature， provided you use the RENAME TO clause.
B.You can restore the DEPT table by using the Oracle Flashback Drop feature and a system­generated name will be assigned to the restored table.
C.You cannot restore the DEPT table by using the Oracle Flashback Drop feature because a table withthe name DEPT already exists in your schema.
D.You cannot restore the DEPT table by using the Oracle Flashback Drop feature because the contents of the recycle bin are purged every 12 hours by default.

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热门试题

多项选择题You are using Oracle Database 10g. You performed an incomplete recovery of your database and opened the database with the RESETLOGS option.  What is the effect of opening the database with the RESETLOGS option？ （）

A.This operation resets the SCN for the database.
B.This operation creates a new incarnation of the database.
C.This operation moves all the redo log files to a different location.
D.This operation deletes the old redo log files and creates new redo log files.
E.This operation updates all current datafiles and online redo logs and all subsequent archived redo logs with a new RESETLOGS SCN and time stamp.

单项选择题YouexecutedthefollowingcommandinRecoveryManager（RMAN）：RMAN>RESTORECONTROLFILEWhichoperationmustyouperformbeforethiscommandisexecuted？（）

A.back up the control file to trace
B.bring database to the MOUNT state
C.open a connection to the RMAN recovery catalog， which contains the RMAN metadata for the target database
D.set the database ID （DBID）， but only if the DB_NAME parameter associated with the target database is unique in the recovery catalog

多项选择题You executed the following command in Recovery Manager （RMAN） to perform a backup of the DETTBS tablespace：  RMAN> BACKUP TABLESPACE DETTBS  Under which conditions would this command execute successfully？ （）

A.The database is in NOMOUNT state.
B.The database is in ARCHIVELOG mode and the tablespace is online.
C.The database is in ARCHIVELOG mode and the tablespace is offline.
D.The database is in NOARCHIVELOG mode and the tablespace is online.
E.The database is in NOARCHIVELOG mode and the tablespace is offline.

多项选择题YouhavesetthevalueoftheNLS_TIMESTAMP_TZ_FORMATparameterintheparameterfiletoYYYY­MM­DD.Thedefaultformatofwhichtwodatatypeswouldbeaffectedbythissetting？（）

A.DATE
B.TIMESTAMP
C.INTERVAL YEAR TO MONTH
D.INTERVAL DAY TO SECOND
E.TIMESTAMP WITH LOCAL TIME ZONE

单项选择题Youexecutethefollowingcommandtoenableasessioninresumablemode：SQL>ALTERSESSIONENABLERESUMABLETIMEOUT60Whatistheimpactofatimeoutonthestatementsbeingsuspended？（）

A.The statements remain suspended for at least 60 seconds.
B.The statements are suspended for 60 seconds and then they are executed.
C.The suspended statements error out if the problem is not rectified within 60 seconds.
D.The statements are automatically suspended 60 seconds after an error is received， and then attempt to execute normally again.