单选题You executed the following command in the lsnrctl utility to stop the listener： lsnrctl STOP L1 What is the effect of this command if L1 is the only listener configured for your database？（）AIt terminates all user sessions.BIt prevents users from logging in to the database remotely.CIt halts the server until all user transactions are completed.DThe server hangs， so users will receive an error asking them to login again.EConnected users would get an error with the message End of communication channel.
单选题
You executed the following command in the lsnrctl utility to stop the listener： lsnrctl> STOP L1 What is the effect of this command if L1 is the only listener configured for your database？（）
A
It terminates all user sessions.
B
It prevents users from logging in to the database remotely.
C
It halts the server until all user transactions are completed.
D
The server hangs， so users will receive an error asking them to login again.
E
Connected users would get an error with the message End of communication channel.
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