多项选择题
A.The ORCL instance is registered dynamically with the listener.
B.The ORCL instance is registered statically in the listener.ora file.
C.The number of current client connections handled by the service handler is two.
D.The total number of client connections handled so far by the service handler is two.
单项选择题 Your database is open and the LISTENER listener is running. The new DBA of the system stops thelistener by using the command： LSNRCTL> STOP What happens to the sessions that are presently connected to the database instance（）
单项选择题 What could be the reason for this（）
单项选择题 Which naming method uses the tnsnames.ora file to store the connect descriptor used by the client while connecting to the database instance from a remote machine（）
