在打開數據庫時客戶端提示“Cannot proceed because system tables used by Event Scheduler were found damaged at server start” 造成此原因是MySQL服務器的當前版本不兼容所有數據庫的表 解決方法 1、linux、windows下解決方法類似 $PATH/mysql/bin/mysql_upgrade - u root -p 例如：/usr/local/mysql/bin/mysql_upgrade - u root -p? ???[回車輸入密碼即可] $PATH mysql安裝路徑 執行完后停止mysqld后再重新啟動mysqld一次，問題即可解決。