单选题You have installed two 64G flash devices to support the Database Smart Flash Cache feature on your database server that is running on Oracle Linux. You have set the DB_SMART_FLASH_FILE parameter: DB_FLASH_CACHE_FILE= ‘/dev/flash_device_1 ‘,’ /dev/flash

第1题：

While Monitoring the space usage in your database that is in ARCHIVELOG mode you observed that the flash recovery area does not have enough free space to accommodate any more files and you do not have necessary permissions to add more space to it. Identify the two events that can occur in the event of a log switch? （）(Choose two.)

• A、An entry is created in the alert log file and the database instance continues to function normally
• B、The log switch hangs occur for transactions until free space is available in the flash recovery area
• C、The Oracle database server deletes a file that is on the obsolete file list to make free space in the flash recovery area
• D、The database instance status is implicitly changed to RESTRICTED mode and file creations to the flash recovery area are prevented

第2题：

You work as a database administrator for Supportcenter.cn. You want to administer your database servers， which are running on different host machines， using the Web-enabled grid control interface. You have configured the agent on the host machines. You have started the Oracle Database 10g Grid Control utility on your machine. Which two additional components would you configure to achieve this objective？（）

• A、Application Server Control
• B、Oracle Management Service
• C、Oracle Enterprise Manager Repository
• D、Oracle Enterprise Manager Database Control

第3题：

You work as a database administrator for Certkiller .com. In your production  database， the size of Database Buffer Cache needs to be increased immediately for the current as well as future instances of the database. The Oracle instance has been configured to accommodate any changes in the size of the memory structures. At this is production database， you want to accomplish this task with no impact on the user’s connections.  Which activity must you have completed before accomplishing this task？（）

• A、You must have started the database instance in restricted mode.
• B、You must have started the database instance inNORMALmode.
• C、You must have started the database instance with server parameter file.
• D、You must have started the database instance but must not have mounted.
• E、You must have started the database instance but must not have opened.

第4题：

While Monitoring the space usage in your database that is in ARCHIVELOG mode you observed   that the flash recovery area does not have enough free space to accommodate any more files and you do not have necessary permissions to add more space to it.  Identify the two events that can occur in the event of a log switch？（）  

• A、 An entry is created in the alert log file and the database instance continues to function normally
• B、 The log switch hangs occur for transactions until free space is available in the flash recovery area
• C、 The Oracle database server deletes a file that is on the obsolete file list to make free space in the flash recovery area
• D、 The database instance status is implicitly changed to RESTRICTED mode and file creations to the flash recovery area are prevented

第5题：

You have installed two 64G flash devices to support the Database Smart Flash Cache feature on your database server that is running on Oracle Linux. You have set the DB_SMART_FLASH_FILE parameter: DB_FLASH_CACHE_FILE= ‘/dev/flash_device_1 ‘,’ /dev/flash_device_2’ How should the DB_FLASH_CACHE_SIZE be configured to use both devices?（）

• A、Set DB_FLASH_CACHE_SIZE=64G
• B、Set D3_FLASH_CACHE_SIZE=64G, 64G
• C、Set D3_FLASK_CACKE_SI2E=128G
• D、db_flash_cache_SI2E is automatically configured by the instance at startup

第6题：

ou are using the flash recovery area （fast recovery area in 11g Release 2） to store backup related files in your database. After regular monitoring of space usage in the Mash recovery area. You realize that the flash recovery area is （jetting filled up very fast and it is running out of space.  Your database flash recovery area is low on specie and you have no more room on disk. Proactively， which two options could you use to make more space available in the flash recovery（）

• A、 Change the RMAN archived log deletion policy.
• B、 Use the RMAN CROSSCHECK command to reclaim the archived log space.
• C、 Change the RMAN retention policy to retain backups for a shorter period of time.
• D、 Use OS command to move files from the flash recovery area to some other location.

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第13题：

You are using the flash recovery area (fast recovery area in 11g Release 2) to store backup related files in your database. After regular monitoring of space usage in the Mash recovery area. You realize that the flash recovery area is jetting filled up very fast and it is running out of space. Your database flash recovery area is low on space and you have no more room on disk. Proactively, which two options could you use to make more space available in the flash recovery？（）

• A、Change the RMAN archived log deletion policy
• B、Use the RMAN CROSSCHECK command to reclaim the archived log space
• C、Change the RMAN retention policy to retain backups for a shorter period of time
• D、Use OS command to move files from the flash recovery area to some other location

第14题：

Your database instance is running with full workload after database creation. You have decided to use a fixed-size undo tablespace. You want to use the Undo Advisor to estimate the capacity of the undo tablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace（）

• A、The retention period to support flashback
• B、The expected length of the longest-running query
• C、The number of undo tablespaces in the database
• D、The size of the Flash Recovery Area for the database instance

第15题：

You have joined a new organization as a Database Administrator. The Security Administrator in your organization has kept human errors， such as erroneously dropping users， tables， and important data， to a minimum by carefully granting only the necessary privileges to each user. As a result of several ongoing transactions within your database， you discover that the flashback logs are rapidly increasing in the flash recovery area. To avoid out-of-space errors， you decide to delete the flashback logs from the flash recovery area. How can you delete the flashback logs from the database if your database is up and running？（）

• A、 Shut down the database using the SHUTDOWN command. Mount the database using the STARTUP MOUNT EXCLUSIVE command and disable Flashback Database using the ALTER DATABASE FLASHBACK OFF statement.
• B、 Change the parameter setting in the SPFILE for the DB_RECOVERY_FILE_DEST parameter using the ALTER SYSTEM SET DB_RECOVERY_FILE_DEST=’’ SCOPE=BOTH statement while the database is up and running.
• C、 Shut down the database using the SHUTDOWN command. Mount the database using the STARTUP MOUNT EXCLUSIVE command. Change the parameter setting in the SPFILE for the DB_RECOVERY_FILE_DEST parameter using the ALTER SYSTEM SET DB_RECOVERY_FILE_DEST=’’ SCOPE=BOTH statement. Disable Flashback Database using the ALTER DATABASE FLASHBACK OFF statement.
• D、 Change the parameter setting in the SPFILE for the DB_RECOVERY_FILE_DEST parameter using the ALTER SYSTEM SET DB_RECOVERY_FILE_DEST=’’ SCOPE=BOTH statement. Shut down the database using the SHUTDOWN command. Mount the database using the STARTUP MOUNT EXCLUSIVE command and disable Flashback Database using the ALTER DATABASE FLASHBACK OFF statement.

第16题：

To enable the Database Smart Flash Cache, you configure the following parameters: DB_FLASH_CACHE_FILE = ‘/dev/flash_device_1’ , ‘/dev/flash_device_2’ DB_FLASH_CACHE_SIZE=64G What is the result when you start up the database instance?（）

• A、It results in an error because these parameter settings are invalid.
• B、One 64G flash cache file will be used.
• C、Two 64G flash cache files will be used.
• D、Two 32G flash cache files will be used.

第17题：

Which options would you consider while configuring a flash recovery area fast recovery area in 11g Release 2 for your production database that is running in ARCHIVELOG mode？（） 

• A、 Setting the FAST_START_MTTR_TARGET to set the mean time to recover
• B、 Setting the RECOVERY_PARALLELISM parameter to twice the number of CPUs
• C、 Using the DB_RECOVERY_FILE_DEST parameter to set the location for flash recovery area
• D、 Using the DB_RECOVERY_FILE_DEST_SIZE parameter to define the disk space limit for the recovery files created in the flash recovery area

第18题：

Flashback Database is enabled in your Oracle 10g database. One of your database users erroneously purged an important table residing in his schema. The table was purged sometime between 10：00 P.M. and 10：30 P.M. The next day， you decide to flash back the database. Before you flash back the database， you want to ensure that you have all the necessary flashback data. Which dynamic performance view must you use to determine whether you have the required flashback data to recover the purged table？（）

• A、 V$DATABASE
• B、 V$UNDOSTAT
• C、 V$FLASHBACK_DATABASE_LOG
• D、 V$FLASHBACK_DATABASE_STAT

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