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1. 誤刪了Table資料並且也已經commit
確認目前資料

2.時間
SQL> select to_char(sysdate,'yyyy-mm-dd hh24:mi:ss') from dual;

3.SCN
SQL> select to_char(current_scn,'99999999990') from v$database;

4. 刪除資料表
SQL> delete BOOKS;
SQL> commit;

5. Flashback Query查詢
SQL> select * from BOOKS as of scn 1021992;

6. 把資料重寫回去
SQL> insert into BOOKS select * from BOOKS as of scn 1021992;
SQL> commit;

7. 確認資料
SQL> select * from BOOKS;

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