支持

端口：5236

DROP TABLE ex_1;
-- 创建外部表
create external table ex_1(c1 int,c2 int,c3 int) from 'D:\dmdbms\data\external_table\ex_1.ctl';

-- 查询外部表
select * from ex_1;

端口：5239

-- 创建外部链接
create public link "LINK1" connect 'DAMENG' with "SYSDBA" identified by "******" using '192.168.118.194/5236';

-- 根据外部链接查询外部表
select * from ex_1@LINK1;

-- 创建外部表的同义词
create OR REPLACE SYNONYM ex_synonym FOR ex_1@LINK1;

-- 根据同义词查询数据
select * from ex_synonym;