Oracle数据库丢失表排查思路实战记录

SELECT * FROM dba_objects where OBJECT_NAME LIKE 'LOG_5%' AND owner = 'Geoff';

select * from v$sqlarea b
   where b.FIRST_LOAD_TIME between '2022-05-31/21:30:00' and'2022-05-31/23:30:00'` 
    order by b.FIRST_LOAD_TIME;

SELECT * FROM recyclebin_temp WHERE TYPE = 'TABLE' ORDER BY droptime DESC;

flashback TABLE LOG_505 to before drop RENAME to LOG_505_temp ;

--查询当前数据库表中的最大ID
SELECT ID FROM WORK_DUTY_LOG_505_temp ORDER BY ID DESC;
--修改序列步长至最大ID
ALTER sequence SEQ_WORK_DUTY_LOG_505 INCREMENT BY 3538;
SELECT SEQ_WORK_DUTY_LOG_505.nextval FROM dual;
--恢复序列步长为默认值1
ALTER sequence SEQ_WORK_DUTY_LOG_505 INCREMENT BY 1;

--创建触发器，并将表中数据手动插入到从回收站恢复的临时表中
CREATE OR REPLACE TRIGGER T_WORK_DUTY_LOG_505 BEFORE INSERT ON WORK_DUTY_LOG_505_temp REFERENCING OLD AS "OLD" NEW AS "NEW" FOR EACH ROW 
begin
 select SEQ_WORK_DUTY_LOG_505.Nextval into:new.ID from dual;  --base_login_user_id序列名称  --ID给ID装上序列
end;

--删除触发器
DROP TRIGGER T_WORK_DUTY_LOG_505;
--将临时表中整合完成的数据恢复至原数据库表中
INSERT INTO  WORK_DUTY_LOG_505 SELECT * FROM WORK_DUTY_LOG_505_temp
--查询确认
SELECT * FROM WORK_DUTY_LOG_505 ORDER BY ID DESC;