TNS-01189: The listener could not authenticate the user

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. - Production on -AUG- ::

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

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=testdb)(PORT=)))
TNS-: 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 :::A0::9A
          inet addr:10.11.12.190  Bcast:10.11.12.255  Mask:255.255.255.0
          inet6 addr: fe80:::56ff:fea0:729a/ Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:  Metric:
          RX packets: errors: dropped: overruns: frame:
          TX packets: errors: dropped: overruns: carrier:
          collisions: txqueuelen:
          RX bytes: (282.2 MiB)  TX bytes: (5.9 MiB)

# more /etc/hosts
10.11.12.180    testdb
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::         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
::         localhost localhost.localdomain localhost6 localhost6.localdomain6