What is the new Oracle Shared Server?
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An improved version of multithreaded server configuration
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A connection pooling configuration where several clients are connected to the same server process
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Two more database servers, which share data by means of database links; the client software is unaware to which server it is connected
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A configuration of Real Application Cluster where the client connection is routed to the least busy instance
Oracle Shared Server is the evolution of the multithreaded server architecture, improving resource utilization through connection pooling and dispatcher processes. Options B and C describe different concepts - B describes basic connection pooling without mentioning dispatcher processes, while C describes Real Application Clusters (RAC). Option D refers to RAC load balancing, not Shared Server.