Your database is running under automatic undo management and the UNDO_RETENTION parameter is set to 900 sec. You executed the following command to enable retention guarantee：
SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE；
What effect would this statement have on the database？（）

单项选择题WhichstatementistruewhenyouruntheSQLTuningAdvisorwithlimitedscope？（）

A.Access path analysis is not performed for the SQL statements.
B.SQL structure analysis is not performed for the SQL statements.
C.SQL Profile recommendations are not generated for the SQL statements.
D.The staleness and absence of the statistics are not checked for the objects in the query supplied to the SQL Tuning Advisor.

多项选择题Youplantousestaticdatabaseregistrationforanewlistenerwhenyoucreateit.Whatcouldbethetworeasonsforthis？（）

A.More than one database is to be registered with the listener.
B.The users will connect the database by using the host naming method.
C.The Oracle Enterprise Manager is to be used to monitor an Oracle9i database.
D.The database that is to be registered with the listener is configured in shared server mode.
E.The listener is not configured on the default port of 1521 and the instance is not configured to register with a nondefault port.

单项选择题YouscheduledabackupbyusingtheScheduleBackupoptioninOracleEnterpriseManager.WhichstatementaboutthescriptcreatedbyOracleEnterpriseManageristrue？（）

A.It is a SQL script.
B.It is a PL/SQL file.
C.It is an operating system （OS） file.
D.It is a Recovery Manager （RMAN） script

单项选择题TheST_INFOmastertablehasmillionsofrowsthatareupdatedveryrarely.IthasaSTATE_CODEcolumnthatcontainsthevaluefor25states.ThetableisfrequentlyqueriedontheSTATE_CODEcolumn.Whichtypeofindexwouldyousuggesttoimprovethequeryperformance？（）

A.B-tree
B.bitmap
C.reverse key
D.function based

单项选择题Your alert log file has the following information： Tue May 25 17：43： 38 2004  ORA-00060： Deadlock detected. More info in file  u01 app oracle admin ORCL udump orcl_ora_3173.trc.  What would you do to ensure that database is still running correctly？（）

A.examine the trace file and kill the session that caused the deadlock
B.examine the trace file and kill both the sessions responsible for the deadlock
C.examine the trace file for details and ask the user who caused the deadlock to rollback the transaction
D.examine the trace file for details and remember that deadlocks are resolved automatically by Oracle database
E.examine the trace file for details and use the Undo Advisor to rollback the transaction that caused the deadlock