How to enable audit for alter user statement

[chandrasekhar_p]

How to enable audit in oracle to track the change of password of user.

[pss]

What exactly are you trying to accomplish?
Oracle can prevent reusing indicated number of old passwords for indicated time frame via user profile. If the goal is to build an application around to have password change reminder for users or capture the actual password then you can put it in the password verify function to capture the event.