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TheDB_BLOCK_CHECKINGinitializationparameterissettoTRUE.Whatwouldbetheresultofthissettingonthedatablocksbeingwrittentothedatafiles,everytimetheDBWnwrites?()A.TheOracledatabasewillcheckalldatablocksbygoingthroughthedataoneachblock，makingsurethedataisself-co
题目
TheDB_BLOCK_CHECKINGinitializationparameterissettoTRUE.Whatwouldbetheresultofthissettingonthedatablocksbeingwrittentothedatafiles,everytimetheDBWnwrites?()
A.TheOracledatabasewillcheckalldatablocksbygoingthroughthedataoneachblock，makingsurethedataisself-consistent.
B.DBWnandthedirectloaderwillcalculateachecksumandstoreitinthecacheheaderofeverydatablockwhenwritingittodisk.
C.TheOracledatabasewillcheckdatablocksbelongingtotheSYSTEMtablespaceonly，bygoingthroughthedataoneachblock，makingsurethedataisself-consistent.
D.TheOracledatabasewillcheckdatablocksbelongingtotheSYSAUXtablespaceonly，bygoingthroughthedataoneachblock，makingsurethedataisself-consistent.
E.TheOracledatabasewillcheckdatablocksintheSYSTEMandSYSAUXtablespacesonly，bygoingthroughthedataoneachblock，makingsurethedataisself-consistent