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Which is the source used by Automatic SQL Tuning that runs as part of the AUTOTASK framework？（）
A: SQL statements that are part of the AWR baseline only
B: SQL statements based on the AWR top SQL identification
C: SQL statements that are part of the available SQL Tuning Set （STS） only
D: SQL statements that are available in the cursor cache and executed by a user other than SYS

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出自：Oracle认证

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