Home >Database >Mysql Tutorial >实现利用dblink同步

实现利用dblink同步

WBOY
WBOYOriginal
2016-06-07 14:54:571843browse

dblink实现oracle对oracle数据库的同步。 Oracle dblink 利用dblink 做oracle到oracle的定时同步,以刚为卡中心做的一个同步为例1、创建需要的dblink连接的数据库(若已经有,则不需要) 例:查看 dblink : select * from dba_db_links; 创建 dblink : cre

dblink实现oracle对oracle数据库的同步。 Oracle dblink
利用dblink 做oracle到oracle的定时同步,以刚为卡中心做的一个同步为例

1、创建需要的dblink连接的数据库(若已经有,则不需要)
 
例:
查看 dblink :  select * from dba_db_links; 
 
创建 dblink :
 
create database link ECARDRYXX
  connect to WPENG
  using '(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 202.120.85.118)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SID = ORA92)
    )
  )';
 
 
2. 创建需要同步到对方数据的视图:
 
例:
create or replace view ryxx as
select ryjbxx.userid outid, xyzzjg.bmmc college, xszzjg.bmmc departname, ryjbxx.major,
       ryjbxx.typeof, ryjbxx.sfsf, ryjbxx.cn, ryjbxx.email, decode(sys_user.STATUS, '2', 'Yes', '4', 'No', 'No') inetUserStatus
       from
(
select t1.xh userid, t1.xym , t1.xsm , t2.zymc major,
       'student' typeof, t1.sfsf sfsf, t1.xm cn, t1.dzxx email
       from idc_u_xs.xs_xsjbxx t1, idc_u_jwmis.jw_zyxx t2
       where  t1.zyh = t2.zydh(+)                                                 -- 本科生
union all
select t1.xh userid, t1.xym, t1.xsm, t2.zymc, 'student' typeof, '' sfsf, t1.xm cn, t1.email email
       from idc_u_yjs.yjs_yjsjbxx t1, idc_u_yjs.yjs_dict_bsxkzydm t2
       where t1.zydm = t2.zydm(+)                                                  -- 研究生
union all
select t1.zgh userid, '' xym, '' xsm, '' major, 'teacher' typeof, '' sfsf,  t1.xm cn, t1.dzxx email
       from idc_u_rs.rs_zzryjbxx t1                                                --  在职人员
union all
select t1.zgh userid, '' xym, '' xsm, '' major, 'teacher' typeof, '' sfsf,  t1.xm cn, t1.dzxx email
       from idc_u_rs.rs_xjrylsb t1                                                 -- 新增人员
) ryjbxx, idc_u_pub.sys_user, idc_u_rs.rs_zzjg xyzzjg, idc_u_rs.rs_zzjg xszzjg
where
      ryjbxx.userid = sys_user.userid
      and ryjbxx.xym = xyzzjg.bmbh(+)    --  学院组织机构
      and ryjbxx.xym = xszzjg.bmbh(+)    --   院系组织机构

3. 创建需要执行同步的pl/sql :
 
例如:
   为了使用更模块化,更集中,建议同面向同一个库的pl/sql,写在同一个包下。
 
CREATE OR REPLACE PACKAGE ECARD IS
       PROCEDURE RYXXSYNC;
END;
 
CREATE OR REPLACE PACKAGE BODY ECARD IS
       PROCEDURE RYXXSYNC IS
       BEGIN
            delete from wpeng.ryxx@ecardryxx; --删除数据
            insert into wpeng.ryxx@ecardryxx(outid, college, departname, major, typeof, sfsf, cn, email, inetuserstatus)
                   select outid, college, departname, major, typeof, sfsf, cn, email, inetuserstatus from ryxx;  --插入最新数据
       END;
END;
 

4. 创建job,定时执行同步:
 
例:
打开 sql命令窗口:
 
variable ryxxsyncjob number; 
 
 
begin
     dbms_job.submit(:ryxxsyncjob, 'ECARD.RYXXSYNC;',
                                   SYSDATE, 'TRUNC(SYSDATE) + 1 + 2/24');  --每天凌晨两点执行。
     commit;
end;
Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn