多项选择题
A. data file
B. password file
C. archivelog file
D. temporary file
E. online redo log file
F. the current control file
G. the tnsnames.ora file
H. current server parameter file
单项选择题 YouworkasadatabaseadministratoratCertkiller.com.Youareworkinginanonlinetransactionprocessing（OLTP）environment.Yourealizethatthesalaryforanemployee，John，hasbeenaccidentallymodifiedintheEMPLOYEEStable.Twodaysago，thedatawasinthecorrectstate.Flashbacklogsgeneratedduringlasttwodaysareavailableintheflashrecoveryarea.Whichoptionwouldyouchoosetobringthedatatothecorrectstatewhileensuringthatnootherdatainthesametableisaffected？（）
单项选择题 You defined the Recovery Manager （RMAN） retention policy to recovery window of 7 days by executing the following command： RMAN> CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS； When a backup is performed， what would be the status of this backup after seven days？（）
单项选择题 Thewarningandcriticalthresholdvalueshavebeensetto85%and97%，respectively，foroneofthetablespaces.Thecurrenttablespacespaceusageis54%.Youmodifythewarningthresholdtobe50%andcriticalthresholdtobe53%inDatabaseControl.Whichstatementistrue？（）