Is there any way to let the user chgange his own account password with logging into WLS console.
I faced this issue in OBIEE 11g and 12c
Just discussed in here last week - a forum search is always something that should be done before posting.
Option a) MBeans - https://www.rittmanmead.com/blog/2011/10/changing-your-password-in-obiee-11g/
Option b) DB authentication - https://blogs.perficient.com/2018/10/03/obiee-12c-security-ldap-authentication-and-db-authorization/
Option c) A real SSO https://blogs.oracle.com/cealteam/obiee-12c%3a-configuring-kerberos-sso-for-obiee-12c
Note that only option A is literally what you ask for but if you think about the request and if you think about security a bit more carefully, then option A becomes the least pertinent and you should rather go for a real corporate security implementation with a proper LDAP and SSO.