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Oracle同义词+dblink的实际应用

Jun 07, 2016 pm 03:53 PM

Oracle同义词+dblink的实际应用 业务需求:原数据库(10.2.0.4.0),新数据库(11.2.0.3)由于程序的需求原因,现在需要把新库上的某

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Oracle同义词+dblink的实际应用

[日期:2015-07-21] 来源:Linux社区  作者:AlfredZhao [字体:]

Oracle同义词+dblink的实际应用

业务需求:原数据库(10.2.0.4.0),新数据库(11.2.0.3)
由于程序的需求原因,现在需要把新库上的某个用户直接映射到老库用户下:

1. 备份原库的用户
nohup exp scott/scott OWNER=scott BUFFER=10240000 STATISTICS=none RESUMABLE=y FILE=scott_all_exp.dmp LOG=scott_all_exp.log &

2. 删除原库的用户下的表
set linesize 180 pagesize 1000
SELECT 'DROP TABLE '||table_name||' CASCADE CONSTRAINTS PURGE;' FROM user_tables;

得出SQL的命令vi保存到droptable.sql
然后SQL> @droptable

3. 在原库上创建到新库的dblink
create public database link link167 connect to scott identified by scott using '(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.167)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = NEWDB)
    )
  )';

测试dblink可用:
select * from dual@link167;

4. 在原库上创建同义词
create synonym MDRT_12E92$ for MDRT_12E92$@link167;

在新库查询user_tables得到table_name的列表,
set pagesize 1500
select table_name from user_tables;

命令用UE列编辑处理好,vi保存到createsynonym.sql
然后SQL> @createsynonym

本文永久更新链接地址

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