ORA-12154: TNS: 无法解析指定的连接标识符

使用SQL Plus登陆的时候，总是显示登陆不上，报提示 ora-12154tns无法解析指定的连接标识符。 经过上网的搜索发现配置文件里定义的描述文件名含有空格，见（**），去掉空格解决问题。

# tnsnames.ora Network Configuration File: D:\oracle\app\Administrator\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
 
**ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST =Jason)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

**oracle =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST =192.168.10.1)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = oracle)
    )
  )