Oracle 11G OCP 1Z0-053 666

（666）You are working in an online transaction processing（OLTP）environment.

You use 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.Now,you need to reverse the effects of the FLASHBACK TABLE command.

Which is the fastest and the most efficient option to reverse the effects of the LASHBACK TABLE command?

A. Restore the backup control file and open the database with RESETLOGS option.

B. Perform point-in-time recovery because flashback cannot be performed again on this table

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

答案：（D）

解析：

（題目要求最快的最有效率的方法閃回表到之前的某個狀態，由於之前已經閃回過了，這一次只要把某個部分的內容給補上就行了，所以只要執行另外的flashback table命令然後加上scn 663571選項即可，但是會報錯unable to read data-table definition has changed）

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