最近项目中Oracle库中一个表log_gpackage有数据丢失现象,但因为没有启用归档,所以CDC和Dataguard都无法使用。google一下,最简单的方法,增加触发器处理逻辑:
1 ---创建触发器 2 --创建记录表,该表分别记录了,删除的用户、机器名、ip及删除时间等 3 create table log_gpackage_history_1120 as 4 (select sid,username,program,machine,'000.000.000.000' ipaddress,sysdate moditime from v$session where 0=1); 5 6 --创建目标表的触发器,只记录删除操作 7 create or replace trigger log_gpackage_history_tr 8 before delete on dbusrdms.log_gpackage 9 for each row 10 begin 11 insert into log_gpackage_history_1120 select sid,username,program,machine,sys_context('userenv','ip_address'),sysdate from v$session 12 where audsid = userenv('sessionid'); 13 end; 14 15 16 --测试数据 17 SELECT * FROM log_gpackage; 18 delete from log_gpackage where LOGSEQNO='172886'; 19 20 21 --检查测试结果 22 SELECT * FROM log_gpackage_history_1120 23 24 SID USERNAME PROGRAM MACHINE IPADDRESS MODITIME 25 1 484 DBUSRDMS plsqldev.exe WORKGROUPAP5 192.168.127.8 2018-11-20 23:00:18