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单选题
In which scenario do you use the Flashback Database feature？（）
A
when a table is dropped and you restore it from the Recycle Bin
B
when a user’s schema is dropped and you recover the user’s schema
C
when some incorrect data is inserted in the table and you retrieve the table to a state that was at a certain timestamp
D
when a row of a table is updated frequently and committed， and you view all the versions of the row within a specific duration
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更多 “单选题In which scenario do you use the Flashback Database feature？（）A when a table is dropped and you restore it from the Recycle BinB when a user’s schema is dropped and you recover the user’s schemaC when some incorrect data is inserted in the table and you retrieve the table to a state that was at a certain timestampD when a row of a table is updated frequently and committed， and you view all the versions of the row within a specific duration” 相关考题
考题
You want to flash back a test database by five hours.You issue this command:SQL > FLASHBACK DATABASE TO TIMESTAMP (SYSDATE － 5／24);Which two statements are true about this flashback scenario?()
A. The database must have multiplexed redo logs for the flashback to succeed.B. The database must be MOUNTED for the flashback to succeed.C. The database must use block change tracking for the flashback to succeed.D. The database must be opened in restricted mode for the flashback to succeed.E. The database must be opened with the RESETLOGS option after the flashback is complete.F. The database must be opened in read-only mode to check if the database has been flashed back to the correct SCN.
考题
You are working on an Oracle Database 10g database. You enabled the Flashback Database feature. Which two statements regarding flashback logs are true？ （）A、 Flashback logs are not archived.B、 Flashback logs are maintained in redo log files.C、 Flashback logs are maintained in the Flash Recovery Area.D、 Flashback logs are used to maintain Flashback Database related errors.E、 Flashback logs need to be cleared manually after you disable Flashback Database.
考题
You are employed as a DBA in an organization. You are informed that the record of EMP_NO 1000 is missing from the SCOTT.EMP table. You are required to identify the user who deleted the record， the SQL statement that will undo the deletion， and the transaction ID of the transaction that deleted the employee record. Which feature will you use to perform the tasks？（）A、 Only the Flashback TableB、 Both the Flashback Transaction Query and the Flashback Version QueryC、 Only the Flashback DropD、 Only the Flashback Version
考题
You want to use the Flashback Transaction Query feature to identify all the changes made to your database within a specific time period. What is a prerequisite for using the Flashback Transaction Query feature？（）A、 You must use automatic undo management in the database.B、 You must configure OMF in your database.C、 You must configure ASM for storing the datafiles.D、 You must multiplex the online redo log file.
考题
You are performing flashback of the EMPLOYEE table in SCOTT’s schema because some incorrect data was inserted into the table and committed by mistake. Which two clauses will you use in the FLASHBACK TABLE statement for using the Flashback Table feature？ （）A、 RESETLOGSB、 TO TIMESTAMPC、 TO BEFORE DROPD、 RENAME TOE、 TO SCN
考题
You are maintaining the SALES database for an organization. You have enabled the Flashback Database feature and want to estimate the flashback space required for future operations. Which view would you query to estimate the flashback space required？（）A、 V$DATABASEB、 V$FLASHBACK_DATABASE_STATC、 V$FLASHBACK_DATABASE_LOGD、 V$RECOVERY_FILE_DEST
考题
In which scenario do you use the Flashback Database feature？（）A、 when a table is dropped and you restore it from the Recycle BinB、 when a user’s schema is dropped and you recover the user’s schemaC、 when some incorrect data is inserted in the table and you retrieve the table to a state that was at a certain timestampD、 when a row of a table is updated frequently and committed， and you view all the versions of the row within a specific duration
考题
In which scenario will you use the Flashback Transaction Query feature？（）A、 when you want to restore an important table that is dropped from the Recycle BinB、 when you want to obtain the SQL statements to undo the deletion of some important records from a table by a transactionC、when you want to restore a dropped user’s schemaD、 when a row of a table is updated many times within a specific time period and you want all the versions of the row in the specified time period
考题
Which two statements are correct regarding the Flashback Versions Query feature？（）A、 You can use this feature to identify the committed versions of the rows， but not the uncommitted versions.B、 You can use this feature to identify the versions of V$ views.C、 You can use this feature to identify the inserts， deletes， and updates performed on a particular row but not the data definition language （DDL） operations performed on the table.D、 You can use this feature for a table only if row movement is enabled for the table.E、 You can use this feature to identify the versions of external and fixed tables.
考题
In which case would you use the Flashback Database feature to perform a recovery？（）A、to recover a dropped tablespaceB、to recover data from a truncated tableC、to recover a data file that has been shrunkD、to recover a database to the state that existed before the RESETLOGS operation
考题
You are working on an Oracle Database 10g database. For which purposes would you use the Flashback Transaction Query feature？ （）A、 To recover a dropped table.B、 To recover a dropped schema.C、 To recover data from a truncated table.D、 To view changes made by all the transactions during a given period of time.E、 To view changes made by a single transaction during a given period of time.
考题
You disabled the Flashback Database feature by using the following command： SQL ALTER DATABASE FLASHBACK OFF; What would be the effect of this command on the existing flashback logs？（）A、Flashback logs are not deleted.B、Flashback logs are deleted automatically.C、Flashback logs are deleted only if you are using Recovery Manager （RMAN）.D、Flashback logs are deleted only if you are using Oracle Managed Files （OMF）.E、Flashback logs are deleted only if you are using Automatic Storage Management （ASM）.
考题
In which scenario will you use the Flashback Version Query feature？（）A、 when you want to restore a table that has been dropped from the Recycle BinB、 when you want to identify the transaction ID of the transaction that deleted some important records from a tableC、 when you want to recover the schema of a dropped userD、when you want to restore a dropped tablespace
考题
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
You are performing flashback of the ORDERS table in the Scott’s schema because some important data is deleted in the table by mistake. The SCN number was 771513 at the time of deletion. You issued the following statement to perform Flashback Table： SQL FLASHBACK TABLE ORDERS TO SCN 771513； What is the prerequisite to perform Flashback Table？（）A、 You must configure OMF in your database.B、 You must enable block change tracking feature in your database.C、 You must enable ROW MOVEMENT feature on the ORDERS table.D、 You must use the Flashback Version Query before using the Flashback Table feature.
考题
You are working on an Oracle Database 10g database that operates in the ARCHIVELOG mode. At 06：00 p.m.， you discovered that a table in the SYSTEM tablespace that does not belong to the data dictionary was dropped at 03：00 p.m. What would you do to recover the table？（）A、 use the Flashback Transaction Query feature to identify the relevant SQL statement and use it to undrop the tableB、 restore the entire database from the most recent backup and open itC、 recover the table by using the Flashback Table featureD、 perform point-in-time recovery to recover the table
考题
单选题In which scenario will you use the Flashback Version Query feature？（）A
when you want to restore a table that has been dropped from the Recycle BinB
when you want to identify the transaction ID of the transaction that deleted some important records from a tableC
when you want to recover the schema of a dropped userD
when you want to restore a dropped tablespace
考题
单选题On Tuesday， a junior DBA dropped an important application user account， whose schema has important tables. You are asked to recover all the objects in the schema. On investigation， you find that the user account was dropped at 11：00 a.m. and Sunday’s backup is the most recent backup.Which flashback feature would you use？（）A
Flashback DropB
Flashback TableC
Flashback DatabaseD
Flashback Version QueryE
Flashback Transaction Query
考题
单选题You want to use the Flashback Transaction Query feature to identify all the changes made to your database within a specific time period. What is a prerequisite for using the Flashback Transaction Query feature？（）A
You must use automatic undo management in the database.B
You must configure OMF in your database.C
You must configure ASM for storing the datafiles.D
You must multiplex the online redo log file.
考题
单选题You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature.Which statement should you use to enable the block change tracking feature?（）A
ALTER DATABASE ENABLE BLOCK CHANGE TRACKINGB
ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE C
ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE D
ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING
考题
多选题You are working on an Oracle Database 10g database. You enabled the Flashback Database feature. Which two statements regarding flashback logs are true？ （）AFlashback logs are not archived.BFlashback logs are maintained in redo log files.CFlashback logs are maintained in the Flash Recovery Area.DFlashback logs are used to maintain Flashback Database related errors.EFlashback logs need to be cleared manually after you disable Flashback Database.
考题
单选题You are maintaining the SALES database for an organization. You have enabled the Flashback Database feature and want to estimate the flashback space required for future operations. Which view would you query to estimate the flashback space required？（）A
V$DATABASEB
V$FLASHBACK_DATABASE_STATC
V$FLASHBACK_DATABASE_LOGD
V$RECOVERY_FILE_DEST
考题
单选题You are performing flashback of the ORDERS table in the Scott’s schema because some important data is deleted in the table by mistake. The SCN number was 771513 at the time of deletion. You issued the following statement to perform Flashback Table： SQL FLASHBACK TABLE ORDERS TO SCN 771513； What is the prerequisite to perform Flashback Table？（）A
You must configure OMF in your database.B
You must enable block change tracking feature in your database.C
You must enable ROW MOVEMENT feature on the ORDERS table.D
You must use the Flashback Version Query before using the Flashback Table feature.
考题
多选题You are maintaining a database that is in ARCHIVELOG mode. You have configured the flash recovery area in your database. The database is in MOUNT EXCLUSIVE mode， and you want to configure the Flashback Database feature. Which two options are NOT required to configure the Flashback Database feature？ （）AOpen the database in read-only mode.BSet the retention target with the DB_FLASHBACK_RETENTION_TARGET initialization parameter.CEnable the block change tracking feature.DExecute the ALTER DATABASE FLASHBACK ON statement.
考题
多选题You are performing flashback of the EMPLOYEE table in SCOTT’s schema because some incorrect data was inserted into the table and committed by mistake. Which two clauses will you use in the FLASHBACK TABLE statement for using the Flashback Table feature？ （）ARESETLOGSBTO TIMESTAMPCTO BEFORE DROPDRENAME TOETO SCN
考题
单选题In which scenario will you use the Flashback Transaction Query feature？（）A
when you want to restore an important table that is dropped from the Recycle BinB
when you want to obtain the SQL statements to undo the deletion of some important records from a table by a transactionC
when you want to restore a dropped user’s schemaD
when a row of a table is updated many times within a specific time period and you want all the versions of the row in the specified time period
考题
单选题In which case would you use the Flashback Database feature to perform a recovery？（）A
to recover a dropped tablespaceB
to recover data from a truncated tableC
to recover a data file that has been shrunkD
to recover a database to the state that existed before the RESETLOGS operation
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