MySQL事務ID分配時機問題

原創 DachuanDachuan 2020-07-04 12:36

 

在快照讀的時候, 有三個隱藏列: row_id   trx_id  undo_log 指針, 還有delete_flag 

 快照讀是通過trx_id 和時間來確定讀取哪條undo_log,  這個時間就存在下邊的表中

 select * from information_schema.INNODB_TRX;

 

也可以通過這個監控 事務ID生成的時間及先後順序.

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