服务器本地登陆报ORA-12560: TNS: 协议适配器错误

jiawang

C:\Users\Administrator>sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on 星期二 1月 23 17:36:18 2018
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
ERROR:
ORA-12560: TNS: 协议适配器错误

请输入用户名:

C:\Users\Administrator>where sqlplus  
D:\product\11.2.0\client\BIN\sqlplus.exe
D:\product\11.2.0\dbhome_1\BIN\sqlplus.exe

进入到家目录的bin下面执行sqlplus
C:\Users\Administrator>cd D:\product\11.2.0\dbhome_1\BIN
C:\Users\Administrator>d:
D:\product\11.2.0\dbhome_1\BIN>sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on 星期二 1月 23 17:37:53 2018
Copyright (c) 1982, 2013, Oracle.  All rights reserved.

连接到:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
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