oracle 触发器

----触发器---
---创建中间插入的表

create table session_history tablespace bap_data
as (select sid,username,program,machine,'000.000.000.000'ipadd,sysdate moditime from v$session where 0=1);

---创建触发器---只要登陆数据库就触发

create or replace trigger on_logon_trigger
 after logon on database
 begin
insert into session_history select sid,username,program,machine,sys_context('userenv','ip_address'),sysdate from v$session where audsid = userenv('sessionid');
end;

---查询登陆信息
select * from  session_history q where q.username not in ('SYS');

-------触发器针对对数据库表做修改-------
1.创建存触发触发器数据的表

 create table test.trigger_test tablespace test_data as (select sid,username,program,machine,'000.000.000.000'ipadd,sysdate moditime from v$session where 0=1);

 2.创建对应触发器
create or replace trigger test.T_test_trigger
 before delete or update on test.T_test
 for each row
begin
 insert into test.trigger_test select sid,username,program,machine,sys_context('userenv','ip_address'),sysdate from v$session where audsid = userenv('sessionid');
 end;

 3.给触发器所有者赋权限
grant select,update,insert on bap.trigger_test to test;

4.测试触发器是否生效
 update  BAP.T_test qq set qq.bnk_no='' where  BNK_CD='888';

5.验证是否有数据入表
 select * from test.trigger_test;

6.其他操作
--DROP trigger  test.T_test_trigger
select * from dba_triggers ww where ww.owner=TEST;