单选题
A The Oracle database will check all data blocks by going through the data on each block， making sure the data is self-consistent.
B The DBWn and the direct loader will calculate a checksum and store it in the cache header of every data block when writing it to disk.
C The Oracle database will check data blocks belonging to the SYSTEM tablespace only， by going through the data on each block， making sure the data is self-consistent.
D The Oracle database will check data blocks belonging to the SYSAUX tablespace only， by going through the data on each block， making sure the data is self-consistent.
E The Oracle database will check data blocks in the SYSTEM and SYSAUX tablespaces only， by going through the data on each block， making sure the data is self-consistent.
正确答案
答案解析
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