Oracle 触发器 插入，更新，删除,数据同步，在同一个数据库的两表同步 ：
建表语句：
create table User_Info (
ID INTEGER not null,
UserName VARCHAR(30) not null,
PassWord VARCHAR(20) not null,
CreateDate Date not null,
Status INTEGER not null,
constraint PK_User_Info primary key (ID)
);
create table User_Info_Temp (
ID INTEGER not null,
UserName VARCHAR(30) not null,
PassWord VARCHAR(20) not null,
CreateDate Date not null,
Status INTEGER not null,
constraint PK_User_Info_Temp primary key (ID)
);
触发器写法：
create or replace trigger UserToTemp after insert or update or delete
on user_info for each row
declare
integrity_error exception;
errno integer;
errmsg char(200);
dummy integer;
found boolean;
begin
if inserting then
insert into User_info_temp(ID,UserName,PassWord,CreateDate,Status) values(:NEW.ID,:NEW.UserName,:NEW.PassWord,:new.CreateDate,:NEW.Status);
elsif updating then
update User_info_temp set ID=:NEW.ID,UserName=:NEW.UserName,PassWord=:NEW.PassWord,Status=:NEW.Status where id=:OLD.id;
elsif deleting then
delete from User_info_temp where id=:OLD.id;
end if;
exception
when integrity_error then
raise_application_error(errno, errmsg);
end;
测试数据：
insert into user_info(ID,UserName,PassWord,CreateDate,Status)values(1,'hello','111',to_date('2015-08-11','yyyy-mm-dd'),1);
update user_info u set u.status=3,u.username='world' where u.id=1;
delete from user_info u where u.id=1;
+++++++++++++++++不同数据库建的两个表同步++++++++++++++++++++++++++++++++
在parking库建User_Info表
在sfgl库建User_Info_Temp表
----------------------------------------------------------
两个数据库的连接dblink: 在parking库新建的
dblink_usertest 可以任意改，是个dblink连接名称
sfgl/sfgl 数据库的用户名和密码
orcl 数据库连接标识符
create public database link dblink_usertest
connect to sfgl identified by sfgl
using 'orcl';
----------------------------------------------------------
触发器： 新建在parking库上的
create or replace trigger UserToTemp after insert or update or delete
on User_Info for each row
declare
integrity_error exception;
errno integer;
errmsg char(200);
dummy integer;
found boolean;
begin
if inserting then
insert into User_Info_Temp@dblink_usertest(ID,UserName,PassWord,CreateDate,Status) values(:NEW.ID,:NEW.UserName,:NEW.PassWord,:new.CreateDate,:NEW.Status);
elsif updating then
update User_Info_Temp@dblink_usertest set ID=:NEW.ID,UserName=:NEW.UserName,PassWord=:NEW.PassWord,Status=:NEW.Status where id=:OLD.id;
elsif deleting then
delete from User_Info_Temp@dblink_usertest where id=:OLD.id;
end if;
exception
when integrity_error then
raise_application_error(errno, errmsg);
end;
----------------------------------------------------------
select * from User_Info@dblink_usertest2;
select * from User_Info_Temp@dblink_usertest;