aix的密码hash使用了salt,所以密码相同,/etc/security/password显示的也不一定一样。
Salt is a two-character string (the 12 bits of the Salt is used to perturb the DES algorithm) chosen from the character set "A-Z", "a-z","0-9","."(period) and "/". Salt is used to vary the hashing algorithm, so that the same clear text password can produce 4,096 possible password encryptions.
检查下最近有没有进行什么操作,或者安全加固之类的。
考虑到root可以ssh登录,但是oracle无法ssh登陆,检查下sshd_config配置文件,或者oracle账号的配置文件。