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Which statements are true regarding the concept of problems and incidents in the fault diagnosability infrastructure for Oracle Database 11g？（）  
A: Only the incident metadata and dumps are stored in the Automatic Diagnostic Repository （ADR）.
B: The problem key is the same as the incident number.
C: The database sends an incident alert to the Oracle Enterprise Manager Database Home page.
D: Every problem has a problem key， which is a text string that describes the problem.
E: The database makes an entry into the alert log file when problems and incidents occur.

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出自：Oracle认证

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