oracle 在當前庫建立另一個庫的連接並使用

今天想查詢一條數據會用到另外一個數據庫，想不切換數據庫的情況下查詢；

create public database link TEST_DBLINK
  connect to alibaba identified by qwer1234
  using '(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST =10.111.10.5)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME =orcl)
)
)'
;
DROP public DATABASE LINK TEST_DBLINK;
select * from t100_psn @TEST_DBLINK join  t_visitplansId on pid = userno where userno='44140080600004';

 

圖樣圖森破；

你學會了嗎？

 

參考：https://blog.csdn.net/xjz2000/article/details/80521591