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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
Posted in BUG
Tagged latch: undo global data, undo_retention, undo_tablespace, _undo_autotune
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