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Your database is open and the LISTENER listener running. You stopped the wrong listener LISTENER byissuing the following command:lsnrctl > STOPWhat happens to the sessions that are presently connected to the database Instance?（）
A:They are able to perform only queries.
B:They are not affected and continue to function normally.
C:They are terminated and the active transactions are rolled back.
D:They are not allowed to perform any operations until the listener LISTENER is started

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出自：Oracle认证

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