sqlplus 远程连接报ORA-12545: 因目标主机或对象不存在, 连接失败

[oracle@yyjk ~]$ sqlplus utan/[email protected]:1521/tlcb

SQL*Plus: Release 11.2.0.4.0 Production on 星期二 1月 22 15:27:48 2019

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

ERROR:
ORA-12545: 因目标主机或对象不存在, 连接失败


Enter user-name: 

解决:

在客户端hosts添加:

[oracle@yyjk sbin]$ cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
20.5.101.31 yyjk
10.3.100.5      gjjsdba
10.3.100.6      gjjsdbb