起动机工作时，辅助开关与起动机主电路的接通时刻应（）。
A. 主电路早些
B. 辅助开关早些或同时
C. 二者必须同时接通
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In a shared server configuration， which two describe the actions that the listener can take to service a client request？（）
A. The listener hands the connection request directly to a dispatcher.
B. A dedicated server inherits the connection request from the listener.
C. The client connects to a dedicated server directly using a protocol address provided by the listener.
D. The application initiating the session spawns a dedicated server process for the connection request.
E. The listener issues a redirect message to the client, containing the protocol address of a dispatcher. The client then terminates the network session to the listener and establishes a network session to the dispatcher, using the network address provided in the redirect message.
Given： What is the result？（）
A. b 3
B. b 8
C. b 13
D. f 3
InwhichthreecaseswouldyouusetheUSINGclause?（）
A. Youwanttocreateanonequijoin.
B. ThetablestobejoinedhavemultipleNULLcolumns.
C. Thetablestobejoinedhavecolumnsofthesamenameanddifferentdatatypes.
D. Thetablestobejoinedhavecolumnswiththesamenameandcompatibledatatypes.
E. YouwanttouseaNATURALjoin,butyouwanttorestrictthenumberofcolumnsinthejoincondition.
The SET CONTROLFILE AUTOBACKUP FORMAT command， which you can specify either within a RUN block or at the RMAN prompt， overrides the configured autobackup in the session only. What is the order of precedence？（） 1. SET within RUN 2. SET at RMAN prompt 3. CONFIGURE
A. 1,2,3
B. 2,3,1
C. 3,2,1
D. There is no precedence between RUN and the RMAN prompt. Each will override CONFIGURE in the session.
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