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Oracle数据库捕获数据变化量方法

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Jun 07, 2016 pm 05:11 PM

Oracle 10g提供了两种激活方法，一种是对用户、一种是对表。

对用户进行实施方法：

对单表实施的方法(设置表的MONITORING属性)

查询该表数据变化结果

通过以上信息可以明确的计算出，在某个时间段内一个表数据变化情况。(得知每个被monitor的表增删改了多少条记录，据测试还是比较准确的)

如果user_tab_modifications视图没有更新，，在执行完DML以后，9i中可以通过执行下面的语句强制更新。默认是15分钟自动更新一次。

exec dbms_stats.FLUSH_DATABASE_MONITORING_INFO();

在10g中，如果初始化参数statistics_level是TYPICAL或者ALL的话，那么表是自动被monitor的。

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