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 o

第1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？（）

• A、 Backup of offline tablespaces.
• B、 Backup of read-only tablespaces.
• C、 Backup of system-critical tablespaces.
• D、 Backup of online， locally managed tablespaces.
• E、 Backup of read/write dictionary-managed tablespaces.

第2题：

Which of the following restrictions are not true with respect to tablespace point-in-time recovery？（）

• A、 The target database must be in NOARCHIVELOG mode.
• B、 No backup is required of the database before you perform a TSPITR.
• C、 You must have all archived redo logs generated since the last backup up to the point to which you want to restore the transport set.
• D、 If you rename a tablespace， you can not perform a TSPITR to any point in time before that rename operation occurred.
• E、 If you have tables in tablespace_1 that have associated constraints in tablespace_2，then you must transport both tablespaces.

第3题：

Your database contains a temporary tablespace， index tablespace， undo tablespace， and a read-only tablespace apart from the SYSTEM and SYSAUX tablespaces. If a media failure occurs resulting in the loss of any of these tablespaces， which tablespace is NOT required for the database to start？（）

• A、 undo tablespace
• B、 index tablespace
• C、 read-only tablespace
• D、 temporary tablespace

第4题：

Your database is in ARCHIVELOG mode. On Friday evening， you perform an online database backup by using the BACKUP DATABASE command at the Recovery Manager （RMAN） prompt and close the  database. On Monday， the System Administrator informs you about the failure of two hard disks. One of the lost disks contains two datafiles， HR1.DBF and HR2.DBF， both of which belong to a read/write tablespace named HR. The disk also contains a datafile， USERS.DBF， which belongs to a read/write tablespace named USERS. You need to restore and recover the database backup that was performed on Friday evening. After mounting the database， you issue the following RMAN commands：        RMAN>RESTORE DATABASE；        RMAN>RECOVER DATABASE；   After successfully executing these RMAN commands， you issue the following statement using SQL*Plus：        SQL>ALTER DATABASE OPEN；   You receive the following errors when attempting to open the database：        ORA-01157： cannot identify/lock data file 10 see DBWR trace file        ORA-01110： data file 10： ’D:///USERS.DBF’   What is the cause of these errors？（）

• A、 The USERS.DBF datafile is corrupted and cannot be restored by RMAN.
• B、 The USERS.DBF datafile was not backed up using the RMAN BACKUP DATABASE command.
• C、 The USERS.DBF datafile was not restored using the RMAN RESTORE DATABASE command.
• D、 The USERS.DBF datafile was not recovered using the RMAN RECOVER DATABASE command.

第5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.

第6题：

You are using Oracle Database 10g. Which statement regarding an incomplete recovery is true？（）

• A、 You do not need to restore all the data files.
• B、 You do not need to open the database with the RESETLOGS operation
• C、 You do not need to perform a full backup after the RESETLOGS operation.
• D、 You do not need to recover all the data files to the same system change number （SCN）.

第7题：

To accomplish user-managed backup for the USERS tablespace, you issued the following command to put the database in backup mode: SQL> ALTER TABLESPACE users BEGIN BACKUP; While copying the file to the backup destination a power outage caused the instance to terminate abnormally. Which statement is true about the next database startup and the USERS tablespace?（）

• A、The database will open, and the tablespace automatically comes out of the backup mode
• B、The database will be mounted, and recovery must be performed on the USERS tablespace.
• C、The database will be mounted, and data files in the USERS tablespace must be taken out of the backup mode.
• D、The database will not be mounted, and you must restore all the data files for the USERS tablespace from the backup, and perform recovery.

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第13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？（）

• A、backup of offline tablespaces
• B、backup of read­only tablespaces
• C、backup of system­critical tablespaces
• D、backup of online， locally managed tablespaces
• E、backup of read/write dictionary­managed tablespaces

第14题：

In your database， all the tablespaces are locally managed. You started Recovery Manager （RMAN） using recovery catalog and restored the control file by using the following command： RMAN> RESTORE CONTROLFILE;  Which two operations do you need to perform after restoring the control file from backup？（）

• A、shut down and restart the instance
• B、add new tempfiles to the temporary tablespaces after recovery
• C、perform a media recovery and open the database with the RESETLOGS option
• D、perform a media recovery and bring the database to NOARCHIVELOG mode

第15题：

Which tablespaces are mandatory in an Oracle database for it to be operational（）

• A、Undo tablespace
• B、USERS tablespace
• C、SYSAUX tablespace
• D、SYSTEM tablespace
• E、Temporary tablespace

第16题：

Youre performing tablespace point-in-time recovery on a tablespace called USERS. If an object in that tablespace has a foreign key constraint owned by another object in the INDEX_TBS  which statement is true？（）  

• A、 You cannot perform the TSPITR with the constraints enabled.
• B、 You must perform the TSPITR recovery of both tablespaces for it to be successful.
• C、 You can perform TSPITR only on the USERS tablespace.
• D、 RMAN will determine if the INDEX_TBS tablespace must also be duplicated and will duplicate it  automatically.
• E、 The TSPITR will only be successful if the constraint is enabled.

第17题：

You work as a database administrator for Supportcenter.cn. Your database is in NOARCHIVELOG mode. The database has been configured with three redo logs groups， and there have been five log switches. You lost one non-system-critical data file from your database. Which method would you use to recover the data file？（）

• A、Restore all the data files and open the database
• B、Create the data file and perform tablespace recovery
• C、No need to restore any file， just recover the database
• D、Restore only the system data file and recover the database
• E、Restore only lost date file and performtablespacerecovery

第18题：

View the Exhibit.You executed the following command to perform a backup of the USERS tablespace： RMAN> BACKUP TABLESPACE USERS；  Which three types of files are backed up？ （）

• A、 all the data files belonging to the USERS tablespace
• B、 password file
• C、 online redo log files
• D、 the current control file
• E、 archived redo log files
• F、 the current server parameter file
• G、 data files belonging to the USERS tablespace and all the default tablespaces

第19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？（）

• A、Shut down the database, restore the two data files and then start up the database. 
• B、Take the system and users tablespace offline, restore the two data files, recover the two datafiles, and then bring the SYSTEM and USERS tablespaces online. 
• C、Shut 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. 
• D、Take the SYSTEM and USERS tablespaces offline, recover the two datafiles and then bring the SYSTEM and USERS tablespaces online.

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