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Which statement is true regarding Dynamic Service Registration？（）
A:Dynamic service registration requires configuration in the listener .ora file.
B:Dynamic service registration can be used only with an Oracle9/instance.
C:Dynamic service registration cannot register a local listener that does not use TCP/IP or port 1521.
D:The PMON background process automatically registers each database instance if the necessary parameters have been set in the database initialization parameter file.

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出自：Oracle认证

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