oracle 触发器两个表的数据同步（同一个库和不同库的）

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;