①找到D:\app\husong\product\11.2.0\dbhome_1\NETWORK\ADMIN目錄下的tnsnames.ora文件
②修改tnsnames.ora文件，新增如下內容：
# 新增遠程數據庫連接.
別名 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 遠程ip)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = 數據庫名)
)
)
③打開plsql developer，輸入用戶名和密碼登錄：
