单项选择题
You executed the following command in Recovery Manager （RMAN） against your Oracle 10g database：RMAN> REPORT NEED BACKUP days 3；What would be the output of this command？（）
A. a list of files that require a backup within three days
B. a list of files that have not been backed up for three days
C. a list of files that RMAN recommends be backed up only once in every three days， based on low volatility
D. a list of files for which a backup has already been performed and may need a backup after three days
相关考题
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单项选择题
Youhavespecifiedthewarningandcriticalthresholdvaluesofanapplicationtablespacetobe60%and70%respectively.Fromthetablespacespaceusagemetrics，youfindthattheactualspaceusagehasreachedthespecifiedwarningthresholdvalue，butnoalertshavebeengenerated.Whatcouldbethereasonforthis？（）
A. The EVENT parameter was not set
B. The SQL_TRACE parameter is set to FALSE
C. The Enterprise Manager Grid Control is not used
D. The STATISTICS_LEVEL parameter is set to BASIC
E. The TIMED_STATISTICS parameter is set to FALSE -
多项选择题
YouworkasadatabaseadministratoratCertkiller.com.Inyourproductiondatabase，youobservethatusers’transactionsareconsumingalotofresourceandyouplantoimposeresourcerestrictionsbyusingResourceManager.ForwhichthreeresourcescanyouenableusagerestrictionsbyusingResourceManager？（）
A. CPU usage
B. degree of parallelism
C. number of open cursors
D. number of sorts performed
E. idle time for blocking sessions
F. number of disk I/O operations performed
G. number of memory I/O operations performed -
单项选择题
Whichstatementcorrectlydescribesthechangetrackingwriter（CTWR）backgroundprocess？（）
A. It keeps track of changes in the background processes.
B. It records the system change number （SCN） in the control file.
C. It writes audit records for user changes to the change tracking file.
D. It records any changes to the listened configuration in the listener.ora file.
E. It records any changes to the database parameters in the change tracking file.
F. It records the physical location of all the changes that are made to the database in the change tracking file.
