单项选择题
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？（）
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？（）
单项选择题 Youspecifiedsegmentspacemanagementasautomaticforatablespace.Whateffectwouldthishaveonspacemanagement？（）