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What is the new Oracle Shared Server?（）
A:An improved version of multithreaded server configuration. 
B:A connection pooling configuration where several clients are connected to the same server process. 
C:Two more database servers, which share data by means of database links; the client software is unaware to which server it is connected. 
D:A configuration of Real Application Cluster where the client connection is routed to the least busy instance. 

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出自：Oracle认证

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