You work as a database administrator for Certkiller .com. Client connection requests are failing because the listener is not responding. You want to forward client connect requests to another listener if one listener is not responding. How do you achieve this？（）

多项选择题YouworkasadatabaseadministratorforCertkiller.com.YourdatabaseisintheMOUNTstateandyouexecutethefollowingcommandtoopenitALTERDATABASEOPEN；Whattwoactionsareperformedasaresultofthiscommand？（）

A.All control files are opened
B.All redo files are opened
C.The password file is opened
D.The parameter file is opened
E.All online data files are opened

单项选择题YouworkasadatabaseadministratorforCertkiller.com.Yoususpectthatinoneofyourapplicationsthecustomertableisbeingaccessedbysomeunauthorizedusers.Whichoptionwouldyouusetomonitorthequeriesbeingexecutedonthecustomertable？（）

A.Monitor thealert.logfile
B.Enable server-side SQL tracing for user sessions
C.Enable fine-grained auditing for the customer table
D.Enable Fine-Grained Access Control （FGAC） for the customer table
E.Write a database trigger on the customer table on the SELECT event

单项选择题YouworkasadatabaseadministratorforCertkiller.com.Oneoftheusersessionswasterminatedabnormallyinthemiddleofatransaction.WhatdoesOracledatabasedotorecoverit？（）

A.Uses undo data for roll forward
B.Uses Flashback Log for recovery
C.Uses online redo logs to roll back
D.Uses undo data to roll back the transaction
E.Uses Recovery Manager （RMAN） to roll back
F.Uses the System Monitor （SMON） background process to perform instance recovery

单项选择题Your boss at Certkiller .com wants you to clarify Oracle 10g. Which statement is true about the analysis of the Automatic Database Diagnostic Monitor （ADDM）？（）

A.A
B.B
C.C
D.D
E.E
F.F

多项选择题You work as a database administrator for Certkiller .com. Your listener process， L1，is currently listening to three databases：CertK INDB04，Certkiller DB05 and Certkiller DB06. Using Database Configuration Assistant （DBCA） you create one more database，Certkiller DB07，and enable dynamic registration.  Which two commands of Listener Control Utility （lsnrct1） would you use to determine whether the dynamic registration occurred for the database， Certkiller DB07， with the L1 listener process？（）

A.SHOW L1
B.SPAWN L1
C.STATUS L1
D.SERVICES L1
E.STATUS LISTENER
F.SERVICES LISTENER
G.SHOWcurrent_listener