Tag Archives: latch: undo global data

系统存在严重的latch: undo global data等待

客户10.2.0.5 RAC环境出现了严重的latch: undo global data等待。 问题时刻AWR的TOP如下: Event Waits Time(s) Avg Wait(ms) % Total Call   Time Wait Class latch: undo   global data 6,245,400 1,372,583 220 22.0 Other gc buffer busy 114,190,782 1,329,749 12 21.3 Cluster enq: TX – row … Continue reading

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