PLSQL Developer连接远程数据库的配置

去Oracle的安装目录找到：D:\oracle\NETWORK\ADMIN这个路径下面的tnsnames.ora文件

修改文件：

这个是本地的

ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)

这个是远程的：
ORCL5 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.23.4)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)

连接的时候输入用户名和密码，数据库选择ORCL5 即可