No stored changes in embedded ldap after restart Adminserver

Hello,

I have problem with my WebLogic Server 12.1.1.0. I found out it during changing weblogic password, but there is more significant case.

I create user in wls console - Security realm - myrealm - create. I give him role Administrator.

I can logout and login as new user.

Then I restart Adminserver (or whole domain), go to the wls console - Security realm - myrealm.

But my new user is away.

My Adminserver doesn't keep the changes in embedded ldap after restart.

Another about 15 wls servers which I manage are OK.

Any ideas how can I solve it?

Thanks

Tomas