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单选题
What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?（）
A
An upper limit on how far you can flash back the database, depending on the information in the redo logs
B
An upper limit on how far you can flash back the database, depending on the information in the undo tablespace
C
The amount of time for which the flashback data is to be kept in the flash recovery area, provided that there is enough space
D
The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace, provided that there is enough space
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更多 “单选题What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?（）A An upper limit on how far you can flash back the database, depending on the information in the redo logsB An upper limit on how far you can flash back the database, depending on the information in the undo tablespaceC The amount of time for which the flashback data is to be kept in the flash recovery area, provided that there is enough spaceD The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace, provided that there is enough space” 相关考题
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What does the DB_FLASHBACK_RETENTION_TARGET parameter configure？（） A、 An upper limit on how far you can flash back the database，depending on the information in the redo logsB、 An upper limit on how far you can flash back the database，depending on the information in the undo tablespaceC、 The amount of time for which the flashback data is to be kept in the flash recovery area， provided that there is enough spaceD、 The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace，provided that there is enough space
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You are managing an Oracle Database 11g database. You want to ensure the recovery of thedatabase to the point of failure. Which configuration will you do to accomplish the task（）A、Multiplex all database filesB、Configure the Flash Recovery Area.C、Configure the database instance for ARCHIVELOG mode.D、Configure the FAST_START_MTTR_TARGET initialization parameter.
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单选题What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?（）A
An upper limit on how far you can flash back the database, depending on the information in the redo logsB
An upper limit on how far you can flash back the database, depending on the information in the undo tablespaceC
The amount of time for which the flashback data is to be kept in the flash recovery area, provided that there is enough spaceD
The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace, provided that there is enough space
考题
单选题What RMAN command must you use before you can back up a database using the recovery catalog？（）A
create catalogB
install databaseC
catalog databaseD
merge Catalog with databaseE
register database
考题
单选题You executed the following query in your database： FROM V$FLASHBACK_DATABASE_LOG; What would you determine from the output？（）A
the time when the last flashback operation in your database was performedB
the time when the first flashback operation in your database was performedC
a list of flashback operations performed in your database using SCN and timeD
the approximate time and the lowest system change number （SCN） to which you can flash back your database
考题
单选题What does the DB_FLASHBACK_RETENTION_TARGET parameter configure？（）A
An upper limit on how far you can flash back the database，depending on the information in the redo logsB
An upper limit on how far you can flash back the database，depending on the information in the undo tablespaceC
The amount of time for which the flashback data is to be kept in the flash recovery area， provided that there is enough spaceD
The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace，provided that there is enough space
考题
单选题Flashback Database is enabled in your Oracle 10g database. One of your database users erroneously purged an important table residing in his schema. The table was purged sometime between 10：00 P.M. and 10：30 P.M. The next day， you decide to flash back the database. Before you flash back the database， you want to ensure that you have all the necessary flashback data. Which dynamic performance view must you use to determine whether you have the required flashback data to recover the purged table？（）A
V$DATABASEB
V$UNDOSTATC
V$FLASHBACK_DATABASE_LOGD
V$FLASHBACK_DATABASE_STAT
考题
单选题You work as a database administrator for Certkiller .com. Your database is configured for automatic undo management. UNDO_RETENTION is set to 3 hours. You want to flash back a table that was created last year. How far back can the flashback query go？ （）A
3 hoursB
6 monthsC
until last yearD
until last commitE
until the point when the undotablespacewas refreshedF
until the database is shut down and the memory erased
考题
单选题You executed the following query in your database： SELECT oldest_flashback_scn， oldest_flashback_time FROM V$FLASHBACK_DATABASE_LOG； What would you determine from the output？（）A
The time when the last flashback operation in your database was performed.B
The time when the first flashback operation in your database was performed.C
A list of flashback operations performed in your database using SCN and time.D
The approximate time and the lowest system change number （SCN） to which you can flash back your database.
考题
单选题On Friday at 11:30 am you decided to flash back the database because of a user error that occurred at 8:30am. Which option must you use to check whether a flashback operation can recover the database to the specified time?（）A
Check the alert log fileB
Query the V$FLASHBACK_DATABASE_LOG viewC
Query the V$RECOVERY_FILE_DEST_SIZE viewD
Query the V$FLASHBACK_DATABASE_STAT viewE
Check the value assigned for the UNDO_RETENTION parameter
考题
单选题Your database is in NOARCHIVELOG mode. You start to do a backup， but your users complain that they dont want you to shut down the database to perform the backup. What options are available to you？（）A
Put the database in hot backup mode and perform an online backup，including backing up the archived redo logs.B
Just back up the database datafiles without shutting down the database.C
You will have to wait until you can shut down the database to perform the backup.D
Mark each datafile as backup in progress， back them up individually，and then mark them as backup not in progress. No archived redo logs will need to be backed up.E
Only back up the datafiles that the user will not be touching. Once the user has finished what they were doing，you can shut down the database and back up the datafiles the user changed during the course of the remaining backup
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