Oracle 闪回查询select dbms_flashback.get_system_change_number from dual/取得时间点exec dbms_flashb
Oracle 闪回查询
select dbms_flashback.get_system_change_number from dual;/取得时间点
exec dbms_flashback.enable_at_system_change_numeber(时间点)/查询5分钟之前的变化
exec dbms_flashback.disable/结束历史查询
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