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深入观察Oracle数据块nested loop读取行为

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Release: 2016-06-07 16:37:55
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前面写了一篇文章是通过10020 event事件来追踪oracle读取buffer get的过程。通过该事件,我们可以进一步来研究下nested loop、hash join连接的数据块读取行为。以下实验首先创建了两张表,T1表足够大,而T2表比较

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