單項選擇題

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

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多項選擇題

In the parameter file of your production database， the FAST_START_MTTR_TARGET parameter is set to 300 to optimize instance recovery. While observing the performance of the database during instance recovery， you find that the redo log files are not sized properly to support this activity. Which two sources could you use to determine the optimal size of the redo log files？（）

A. the V$LOG view
B. the V$DBFILE view
C. the V$LOGFILE view
D. the V$INSTANCE_RECOVERY view
E. Oracle Enterprise Manager Database Control

多項選擇題

You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re-create the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re-create the indexes？（）

A. ONLINE
B. REVERSE
C. PARALLEL
D. COMPRESS
E. NOLOGGING
F. COMPUTE STATISTICS

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Why would you use the following FLASHBACK TABLE command？（） FLASHBACK TABLE emp TO TIMESTAMP （’11：45’.’hh12：mi’）；

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You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re-create the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re-create the indexes？（）

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Why would you use the following FLASHBACK TABLE command？（）
FLASHBACK TABLE emp TO TIMESTAMP （’11：45’.’hh12：mi’）；

You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re-create the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re-create the indexes？（）