最近項目中Oracle庫中一個表log_gpackage有數據丟失現象,但因爲沒有啓用歸檔,所以CDC和Dataguard都無法使用。google一下,最簡單的方法,增加觸發器處理邏輯:
---創建觸發器
--創建記錄表,該表分別記錄了,刪除的用戶、機器名、ip及刪除時間等
create table log_gpackage_history_1120 as
(select sid,username,program,machine,'000.000.000.000' ipaddress,sysdate moditime from v$session where 0=1);
--創建目標表的觸發器,只記錄刪除操作
create or replace trigger log_gpackage_history_tr
before delete on dbusrdms.log_gpackage
for each row
begin
insert into log_gpackage_history_1120 select sid,username,program,machine,sys_context('userenv','ip_address'),sysdate from v$session
where audsid = userenv('sessionid');
end;
--測試數據
SELECT * FROM log_gpackage;
delete from log_gpackage where LOGSEQNO='172886';
--檢查測試結果
SELECT * FROM log_gpackage_history_1120
SID USERNAME PROGRAM MACHINE IPADDRESS MODITIME
1 484 DBUSRDMS plsqldev.exe WORKGROUP\AP5 192.168.127.8 2018-11-20 23:00:18
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