输入root和密码后等待，然后报错：
The DT messaging system could not be started,
To correct the problem:
1.choose[ok]to return to the login screen.
2. Select Failsafe Session from the login screen's option menu and log in.
3. Check to see that the hostname is correct in: /etc/hosts
Other hostname problems can be corrected by using the command:smit mktcpip
4. Check to see that if a search list is specified in /etc/resolv.conf,it includes the domain your machine is configured on.
for additional information,see the DT User's Guide
更改了 /etc/hosts 和smit mktcpip 为一致，但还是不能登录，不知是啥原因，请高手指点指点呀
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