[单选] When is an IPSec SA built on the Teleworker Router?（）

You work as a database administrator at Certkiller .com. You are working in an online transaction processing （OLTP） environment. You realize that the salary for an employee， John， has been accidentally modified in the EMPLOYEEStable. Two days ago， the data was in the correct state. Flashback logs generated during last two days are available in the flash recovery area. Which option would you choose to bring the data to the correct state while ensuring that no other data in the same table is affected？（）  perform point-in-time recovery。  perform a Flashback Table operation to restore the table to the state it was in two days ago。  perform a Flashback Database operation to restore the database to the state it was in two days ago。  perform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery。 人的心理是（） A.脑的功能 。 B.客观现实的反映 。 C.主观映象 。 D.由心脏产生的。 为什么说五六十年代农村题材小说创作具有得天独厚的优越条件？ 接地网：由（）接地体在地下相互连通构成，为电气设备或金属结构提供基准电位和对地泄放电流的通道。 一组。 多组。 双组。 一组或多组。 You notice a performance change in your production Oracle database and you want to know which change has made this performance difference. You generate the Compare Period Automatic Database Diagnostic Monitor (ADDM) report to further investigation. Which three findings would you get from the report?（） It detects any configuration change that caused a performance difference in both time periods.。 It identifies any workload change that caused a performance difference in both time periods.。 It detects the top wait events causing performance degradation.。 It shows the resource usage for CPU, memory, and I/O in both time periods.。 It shows the difference in the size of memory pools in both time periods.。 It gives information about statistics collection in both time periods.。 When is an IPSec SA built on the Teleworker Router?（）