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查看监听时，发现监听状态异常，报TNS-01189: The listener could not authenticate the user错误
$ lsnrctl stat LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 06-AUG-2015 01:47:42 Copyright (c) 1991, 2013, Oracle. All rights reserved. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=testdb)(PORT=1521))) TNS-01189: The listener could not authenticate the user
原因，本机器是克隆而来，修改了ip地址之后，没有修改对应的hosts文件
# ifconfig eth1 Link encap:Ethernet HWaddr 00:50:56:A0:72:9A inet addr:10.11.12.190 Bcast:10.11.12.255 Mask:255.255.255.0 inet6 addr: fe80::250:56ff:fea0:729a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:195745 errors:0 dropped:0 overruns:0 frame:0 TX packets:101000 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:295931844 (282.2 MiB) TX bytes:6260200 (5.9 MiB) # more /etc/hosts 10.11.12.180 testdb 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
修改方法：
修改host配置
# more /etc/hosts 10.11.12.190 testdb 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
TNS-01189: The listener could not authenticate the user
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原文地址：http://www.cnblogs.com/abclife/p/4707182.html
