1.Oracle官网下载instantclient

解压到D:\zl\instantclient_11_2

2.配置环境变量

1. ORACLE_HOME = D:\zl\instantclient_11_2
2. TNS_ADMIN = D:\zl\instantclient_11_2
3. NLS_LANG = SIMPLIFIED CHINESE_CHINA.ZHS16GBK

3.在D:\zl\instantclient_11_2文件夹下创建两个文件tnsnames.ora和listener.ora

tnsnames.ora

ymdb =

  (DESCRIPTION =

    (ADDRESS_LIST =

      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.8)(PORT = 1521))

    )

    (CONNECT_DATA =

      (SERVICE_NAME = dbname)

    )

  )

listener.ora

LISTENER1 =

(DESCRIPTION =

    (ADDRESS = (PROTOCOL = TCP)(HOST = 要访问的数据库地址)(PORT = 1521))

)

4.配置plsqldevloper-->工具-->首选项-->连接

5.重启成功