PL/SQL Developer远程访问Oracle数据库

     安装oracle对应的版本 ，在oracle的安装目录找到oracle\product\11.2.0\dbhome_1\NETWORK\ADMIN\tnsnames.ora这个文件添加上数据库访问的串   

LWZC =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = [服务器地址])(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = [数据库id])
    )
  )

然后重新启动plsql developer  .