多选题You have a database with the following tablespaces: SYSTEM, SYSAUX, UNDO, USERS, TEMP. You want to"roll back" the data in the USERS tablespace to the way it looked yesterday.  Which tablespaces do you need to perform a point-in-time restore operation on in order to complete this task?()ASYSTEMBSYSAUXCUNDODUSERSETEMPFThis restore is not possible

多选题
You have a database with the following tablespaces: SYSTEM, SYSAUX, UNDO, USERS, TEMP. You want to"roll back" the data in the USERS tablespace to the way it looked yesterday.  Which tablespaces do you need to perform a point-in-time restore operation on in order to complete this task?()
A

SYSTEM

B

SYSAUX

C

UNDO

D

USERS

E

TEMP

F

This restore is not possible


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Examine the following command that is used to duplicate a database on the same host:Which two statements describe the effect after the database is duplicated successfully? () A. The data files of the read-only tablespaces in the target database are not duplicatedB. The read-only tablespaces in the target database are still defined in new the databaseC. The read-only tablespaces in the target database are changed to online after duplicationD. The data files of the read-only tablespaces in the target database get duplicatedE. The read-only tablespaces in the target database are not defined in the new database

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单选题Two data files have been deleted at the operating system level by accident. Your database is running in ARCHIVELOG mode and online backups are taken nightly. One of the data files that has been deleted belongs to the USERS tablespace on the other belongs to the SYSTEM tablespace. How can you recover from this situation?()AShut down the database, restore the two data files and then start up the database. BTake the system and users tablespace offline, restore the two data files, recover the two datafiles, and then bring the SYSTEM and USERS tablespaces online. CShut down the database, restore the two data files, start up the database in MOUNT mode, recover the two data files, and then alter the database open. DTake the SYSTEM and USERS tablespaces offline, recover the two datafiles and then bring the SYSTEM and USERS tablespaces online.

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单选题You are creating tablespaces in Oracle. Which of the following keywords or clauses permits the datafiles of a database to grow automatically in order to accommodate data growth?()ADEFAULT STORAGE BEXTENT MANAGEMENT CAUTOEXTEND DDATAFILE

多选题You have a database with the following tablespaces: SYSTEM, SYSAUX, UNDO, USERS, TEMP. You want to"roll back" the data in the USERS tablespace to the way it looked yesterday.  Which tablespaces do you need to perform a point-in-time restore operation on in order to complete this task?()ASYSTEMBSYSAUXCUNDODUSERSETEMPFThis restore is not possible

多选题Your database is functioning in NOARCHIVELOG mode. Your database contains 15 tablespaces. You want to use Recovery Manager (RMAN) to perform backups. Which two backups would you be able to perform when the database is being accessed by users?()ABackup of offline tablespaces.BBackup of read-only tablespaces.CBackup of system-critical tablespaces.DBackup of online, locally managed tablespaces.EBackup of read/write dictionary-managed tablespaces.

多选题Which statements are true about logical structures of the Oracle database()AEach segment contains one or more extents.BMultiple tablespaces can share a single data fileCA 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

多选题Your database operates in ARCHIVELOG mode and all the tablespaces are online. Due to a user error, you decided to perform an incomplete recovery. Which two tasks would you be required to perform in the recovery process?()Aopen the database with the RESTRICTED optionBopen the database with the RESETLOGS optionCrecover to the required SCN only that data file in which the error occurredDrecover all the data files to the same system change number (SCN)

多选题Which of the following restrictions are not true with respect to tablespace point-in-time recovery?()AThe target database must be in NOARCHIVELOG mode.BNo backup is required of the database before you perform a TSPITR.CYou must have all archived redo logs generated since the last backup up to the point to which you want to restore the transport set.DIf you rename a tablespace, you can not perform a TSPITR to any point in time before that rename operation occurred.EIf you have tables in tablespace_1 that have associated constraints in tablespace_2,then you must transport both tablespaces.

多选题Your database is running in the ARCHIVELOG mode. You have configured RMAN for backup and recovery operations. You execute the following command from the RMAN prompt:   RMAN CONFIGURE CONTROLFILE AUTOBACKUP ON;   After executing this command, in which of the following cases will RMAN make an auto-backup of the control file? ()Awhen you change the name of a datafileBwhen you drop a table from the databaseCwhen you take an export of the databaseDwhen you back up the database using OS utilitiesEwhen you issue an ALTER SYSTEM SWITCH LOGFILE statementFwhen you issue a BACKUP command from inside the RMAN run block

多选题You are using a recovery catalog to maintain Recovery Manager (RMAN) backup information for your production database. You have registered your production database and are performing regular backups. Because of a new requirement you have added a few new tablespaces to your production database and you want them to be included in backups.  Identify two options for completing this task.()AReregistering the target database in recovery catalogBTransporting the new tablespaces to the recovery catalog databaseCSyncronizing the recovery catalog with the target database control fileDPerforming a fresh backup of the target database to include the new data files in the catalog database