oracle數據庫實時數據同步

1、查詢當前用戶是否有添加dblink的權利：
select * from user_sys_privs where privilege like upper('%DATABASE LINK%'); 


2、建立數據鏈：其中SERVICE_NAME就是SID的值。connect to 用戶名 identified by 密碼
create public database link insertTest    
connect to its_rz identified by its_rz
using '(DESCRIPTION =(ADDRESS_LIST =(ADDRESS =(PROTOCOL = TCP)(HOST = 10.3.242.11)(PORT = 1521)))(CONNECT_DATA =(SERVICE_NAME = gakk)))';


3、測試一下，是否可用：
select * from D_XTBH_T@insertTest


4、創建並測試別名
create public synonym order_A for D_XTBH_T@insertTest; 
select * from order_A;


5、創建觸發器，
create or replace trigger temp_trigger 
before INSERT ON D_XTBH_T FOR EACH ROW 
BEGIN
    IF inserting THEN
        insert into order_A(XTBH,XTMC) values (:NEW.XTBH, :NEW.XTMC); 
    END IF;
END;




6、插入數據進行測試。
insert into D_XTBH_T(XTBH,XTMC) values('12', 'testing');


7、查詢同步數據的表，看一下，應該有剛纔插入的數據了。