[单选]
You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used.
Which method would you follow to achieve this？（）

A . enable index monitoring and query the DBA_OBJECTS view
B . enable index monitoring and query the DBA_INDEXES view
C . enable index monitoring and query the V$OBJECT_USAGE view
D . enable index monitoring and view the DBA_INDEXTYPE_COMMENTS view

Which three statements correctly describe the features of the I/O calibration process?（） Only one I/O calibration process can run at a time.。 It automates the resource allocation for the Automated Maintenance Tasks.。 It improves the performance of the performance-critical sessions while running.。 It can be used to estimate the maximum number of I/Os and maximum latency time for the system.。 The latency time is computed only when the TIMED_STATISTICS initialization parameter is set to TRUE.。各类休克共同的病理生理基础是（）有效循环血量锐减。心搏出量不足。细胞代谢紊乱。外周血管扩张。酸碱平衡失调。 You deploy mobile devices that run Microsoft Windows Mobile 5.0. A Microsoft Windows Server 2003 server that runs Routing and Remote Access is configured to allow virtual private network （VPN） connections that are as secure as possible. You need to connect the Windows Mobilebased devices to the VPN server. You also need to ensure that both ends of the VPN tunnel are authenticated. Which two actions should you perform？（） Select L2TP/IPSec on each Windows Mobilebased device.。 Obtain and install a certificate on each Windows Mobilebased device.。 Configure the appropriate pre-shared key on each Windows Mobilebased device.。 Select Point-to-Point Tunneling Protocol （PPTP） on each Windows Mobilebased device.。举例说明产品与服务的关系。 Which command starts Workload Manager？（） wlmrun。 wlmstart。 wlmcntrl。 wlmstartu。

You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used.
Which method would you follow to achieve this？（）

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[单选] You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used. Which method would you follow to achieve this？（）

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[单选]
You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used.
Which method would you follow to achieve this？（）