最近兩天發生此問題,一直往tuning方向去查。
最後發現不是如此,茲將歷史紀錄如下:
1. 新增兩個欄位,並開始補資料
2. 發現程式跑不出來,CPU utilization很高
3. v$session_wait 說:DB sequential read -> latch free -> 1) cache buffer chains ,2)也有enqueues
4. dbv沒有異常
5. analyze table ... validate structure -> ora-01410 ,invalid rowid
5. 最後判斷是DB block corruption造成,重建table
This man is too old to remember everything in his brain. Right now, he needs a place to write down what he has studied.
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