单选题Your database is open and users are connected using the LISTENER listener. The new DBA of the system stops the listener by using the following command： LSNRCTL STOP What would happen to the sessions that are presently connected to the database instance？（）AThe sessions are able to perform only queries.BThe sessions are not affected and continue to function normally.CThe active transactions are rolled back and the sessions get terminated.DThe sessions are not allowed to perform any operations till the listener is started.
单选题
Your database is open and users are connected using the LISTENER listener. The new DBA of the system stops the listener by using the following command： LSNRCTL> STOP What would happen to the sessions that are presently connected to the database instance？（）
A
The sessions are able to perform only queries.
B
The sessions are not affected and continue to function normally.
C
The active transactions are rolled back and the sessions get terminated.
D
The sessions are not allowed to perform any operations till the listener is started.
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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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单选题Your database is open and the LISTENER listener is running. The new DBA of the system stops the listener byusing the command：LSNRCTL STOP What happens to the sessions that are presently connected to the database instance（）AThe sessions are able to perform only queries.BThe sessions are not affected and continue to function normally.CThe sessions are terminated and the active transactions are rolled back.DThe sessions are not allowed to perform any operations till the listener is started
单选题You work as a database administrator for Supportcenter.cn. When you tried to connect to the database， you received the following error： ERROR： ORA-12541：TNS：no_listener You found that the listener is not running on the server， so you issued the following command in the Listener Control utility to start the listener. lsnrctlSTART What statement is true？（）AIt would attempt to start the default listenerBIt would start the most recently created listener.CIt would display an error with a message asking for the listener name to be specified.DIt would show you a list of listeners and prompts for the listener name that you want to start.
单选题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（）AThe sessions are able to perform only queries.BThe sessions are not affected and continue to function normally.CThe sessions are terminated and the active transactions are rolled back.DThe sessions are not allowed to perform any operations till the listener is started.
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单选题Your database is open and the LISTENER listener is running. The new DBA of the system stops the listener byusing the command：LSNRCTL STOP What happens to the sessions that are presently connected to the database instance（）AThe sessions are able to perform only queries.BThe sessions are not affected and continue to function normally.CThe sessions are terminated and the active transactions are rolled back.DThe sessions are not allowed to perform any operations till the listener is started
单选题Anyone who knows just the host name and the listener name can have full control over the listener. They can stop the listener and also obtain detailed information about the listener， database， and the configuration of the application. How would you avoid this scenario？（）Alock the listenerBhide the listenerCcreate multiple listenersDrun listener on a remote clientEset a password for the listenerFstore listener.ora in a non-default location
单选题Your database is in ARCHIVELOG mode. On Friday evening， you perform an online database backup by using the BACKUP DATABASE command at the Recovery Manager （RMAN） prompt and close the database. On Monday， the System Administrator informs you about the failure of two hard disks. One of the lost disks contains two datafiles， HR1.DBF and HR2.DBF， both of which belong to a read/write tablespace named HR. The disk also contains a datafile， USERS.DBF， which belongs to a read/write tablespace named USERS. You need to restore and recover the database backup that was performed on Friday evening. After mounting the database， you issue the following RMAN commands： RMANRESTORE DATABASE； RMANRECOVER DATABASE； After successfully executing these RMAN commands， you issue the following statement using SQL*Plus： SQLALTER DATABASE OPEN； You receive the following errors when attempting to open the database： ORA-01157： cannot identify/lock data file 10 see DBWR trace file ORA-01110： data file 10： ’D:///USERS.DBF’ What is the cause of these errors？（）A The USERS.DBF datafile is corrupted and cannot be restored by RMAN.B The USERS.DBF datafile was not backed up using the RMAN BACKUP DATABASE command.C The USERS.DBF datafile was not restored using the RMAN RESTORE DATABASE command.D The USERS.DBF datafile was not recovered using the RMAN RECOVER DATABASE command.
单选题Adam is working as a Database Administrator （DBA） for TeleSoft Corporation. His database is running in the ARCHIVELOG mode. During database startup， he discovers that one of the disks crashed， resulting in the permanent loss of a read-write USERS tablespace. The USERS01.dbf datafile belongs to the USERS tablespace and is 500 MB in size. He needs to recover the USERS tablespace from the backup. While reviewing the backup details， he discovers that the most recent available backup is five days old. This backup was taken when the USERS tablespace was read-only. After correcting the hardware problem that caused the failure， what should Adam do to recover the USERS tablespace？（）A Restore the USERS01.dbf file from the backup， and open the database using the STARTUP command.B Restore the USERS01.dbf file using the RECOVER TABLESPACE command， and open the database using the ALTER DATABASE OPEN statement.C Restore the USERS01.dbf file from the backup， recover the USERS tablespace using the RECOVER TABLESPACE command， and open the database using the ALTER DATABASE OPEN statement.D Restore the USERS01.dbf file from the backup and change the status of the USERS tablespace from read-only to read-write using the ALTER TABLESPACE USERS READ WRITE statement. Then， recover the USERS tablespace using the RECOVER TABLESPACE command， and open the database using the ALTER DATABASE OPEN statement.
单选题You were recently hired by an organization as a database administrator. You are asked to find out whether the currently functional listener process， named L1， has been password protected or not. You are not familiar with the file system of the new organization. How would you accomplish the task？（）Aby using the STATUS command of the Listener control utilityBby using the STATUS L1 command of the Listener control utilityCby using the SHOW RULES command of the Listener control utilityDby using the SET PASSWORD command of the Listener control utilityEby searching for the PASSWORD_LISTENER entry in the listener.ora file
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.
多选题You plan to use static database registration for a new listener when you create it. What could be the two reasons for this？（）AMore than one database is to be registered with the listener.BThe users will connect the database by using the host naming method.CThe Oracle Enterprise Manager is to be used to monitor an Oracle9i database.DThe database that is to be registered with the listener is configured in shared server mode.EThe listener is not configured on the default port of 1521 and the instance is not configured to register with a nondefault port.
单选题In which situation would you use static database registration for a listener（）Awhen multiple databases are to be registered with the listenerBwhen DBAs need to connect remotely to start up the database instanceCwhen users need to connect the database instance using the host naming methodDwhen the database instance that is to be registered with the listener is configured in shared server mode
单选题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?（）AThey are able to perform only queries.BThey are not affected and continue to function normally.CThey are terminated and the active transactions are rolled back.DThey are not allowed to perform any operations until the listener LISTENER is started