问答题
WhichtwostatementsaretrueregardingHealthMonitorchecksinOracleDatabase11g?()
A.HealthMonitorcheckscanbeusedtoscanthecontentsoftheredologandarchivelogsforaccessibilityandcorruption.
B.HealthMonitorcheckscanbeusedtoverifytheintegrityofdatabasefilesandreportfailuresifthesefilesareinaccessible,corruptorinconsistent.
C.HealthMonitorcheckscanbeusedtoverifythecontentsofdictionaryentriesforeachdictionaryobjectandfixitautomatically.
D.HealthMonitorchecksarealwaysinitiatedmanuallywhenthereissomecriticalerror.