PLSQL配置数据库的方式

1.直接连接的方式

2.修改客户端D:\app\Administrator\product\11.2.0\client_1\network\admin\tnsnames.ora文件的方式.

oracle =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = oracle)
    )
  )