目标数据库:
计算机名：suzhou
数据库名:ocp
0.目标数据库新建测试表
SQL> conn scott/password
已连接。
SQL> show user;
USER 为 "SCOTT"
SQL> create table t1
2 (
3 sid int not null,
4 sno int
5 );
表已创建。
SQL> insert into t1 values (101,201);
已创建 1 行。
SQL> commit;
提交完成。
SQL> select * from t1;
SID SNO
---------- ----------
101 201
1.源数据库上修改tnames.ora
to_suzhou =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.90.20)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = ocp)
)
)
2.源数据库上新建链接
create public database link to_sz connect to scott identified by password using 'to_suzhou';
3.测试db link
SQL> select * from t1@to_sz;
SID SNO
---------- ----------
101 201
4.创建同义词，
SQL> create synonym dblinktest for t1@to_sz;
Synonym created.
SQL>select * from dblinktest;
5查看数据库的链接
SQL> select owner,object_name from dba_objects where object_type='DATABASE LINK';
6删除数据库连接
SQL> drop public database link to_sz;