单项选择题
Why would you use the following FLASHBACK TABLE command？（）
FLASHBACK TABLE emp TO TIMESTAMP （’11：45’，’hh12：mi’）;
A.to undo the changes made to the EMP table since the specified time
B.to restore the EMP table that was wrongly dropped from the database
C.to view the transactions that have modified the EMP table since the specified time
D.to view the changes made to the EMP table for one or more rows since the specified time
E.to recover the EMP table to a point in time in the past by restoring the most recent backup
相关考题
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多项选择题
YouexecutedthefollowingFLASHBACKTABLEcommand：FLASHBACKTABLEempTOTIMESTAMP（’11：45’，’hh12：mi’）Whichtwostatementsarecorrect？（）
A.The FLASHBACK TABLE statement will not be written to the alert log file.
B.The changes made to the EMP table since the specified time will be undone.
C.The EMP table that was dropped by mistake from the database will be restored.
D.The FLASHBACK TABLE statement will be executed within a single transaction.
E.The FLASHBACK TABLE statement will not maintain the existing indexes on the EMP table.
F.The list of transactions that have modified the EMP table since the specified time will be displayed. -
单项选择题
You are working in an online transaction processing （OLTP） environment. You used the FLASHBACK TABLE command to flash back the CUSTOMERS table. Before executing the FLASHBACK TABLE command， the System Change Number （SCN） was 663571. After flashing back the CUSTOMERS table， you realize that the table is not in the correct state and the resultant changes are not what you had desired. So， you need to reverse the effects of the FLASHBACK TABLE command while ensuring that： a） No other user data in the database is affected. b） The operation takes the minimum possible time. Which option would you choose？（）
A.use the ROLLBACK command with SCN 663571
B.perform Flashback Transaction Query with SCN 663571
C.execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN 663571
D.execute another FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN 663571 -
多项选择题
View the Exhibit and examine the Flashback SCNs. A user has inserted wrong department data in the DEPT3 table in the USERS tablespace. You use the Flashback Table functionality to rectify the erroneous inserts. While performing the recovery， you chose 2004343 as the Flashback SCN. Which two statements are correct in this scenario？（）
A.Only the row with DEPARTMENT_ID 290 would be flashed back.
B.The rows with DEPARTMENT_ID 290 and 300 would be flashed back.
C.The rows with DEPARTMENT_ID 290 and 280 would be flashed back.
D.You would have taken the USERS tablespace offline before starting the Flashback Table operation.
E.You would have enabled row movement for the DEPT3 table before starting the Flashback Table operation.
