问题查询：这些查询只返回超过重要性能计数器阈值的行，例如缓冲池命中率不到90%的行。

Problem queries: These queries return only rows that exceed thresholds for important performance counters, for example, rows with buffer pool hit ratio lower than 90%.

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您可以对特定的阈值计数器设置过滤器。

You can put a filter on a particular threshold counter.

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定期异常处理提醒（阈值提醒），基于操作系统和 DB2 性能计数器。

Periodic exception processing alerts (threshold alerts), which are based on operating system and DB2 performance counters

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