有两个服务器，名称和IP及tnsnames分别为：
tffserver，168.95.0.13
server.COM =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 168.95.0.1)(PORT = 1521))
)
(CONNECT_DATA =
(sid = orcl)
)
)

server，168.95.0.1
tffserver =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 168.95.0.13)(PORT = 1521))
)
(CONNECT_DATA =
(SID = orcl)
)
)

在server上创公用数据链路swdl成功：
drop public database link swdl;
create public database link swdl
CONNECT TO zs IDENTIFIED BY zs
USING 'tffserver';

但在server上通过数据链路swdl访问tffserver上的表table时发生错误

当：select * from table@swdl;

给出：ERROR 位于第 1 行:
ORA-02085: 数据库链接SWDL.US.ORACLE.COM与ORCL.US.ORACLE.COM相连结

有谁能够告诉我!!