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Evaluate the following command：   SQL>ALTER SYSTEM SET db_securefile = ’IGNORE’；   What is the impact of this setting on the usage of SecureFiles？（）
A: It forces BasicFiles to be created even if the SECUREFILE option is specified to create the LOB
B: It forces SecureFiles to be created even if the BASICFILE option is specified to create the LOB
C: It does not allow the creation of SecureFiles and generates an error if the SECUREFILE option is specified to create the LOB
D: It ignores the SECUREFILE option only if a Manual Segment Space Management tablespace is used and creates a BasicFile

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出自：Oracle认证

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