（单选题）
You work as a database administrator for Certkiller .com. Client connection requests are failing because the listener is not responding. You want to forward client connect requests to another listener if one listener is not responding. How do you achieve this？（）
AEnable instance failover
BConfigure shared server
CEnable database failover
DEnable connect-time failover
EEnable Transparent Application Failover （TAF）
正确答案
答案解析
略
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