Unable to start SOA & OIM Managed Servers

Question

I am getting the following error when I am starting the SOA $ OIM  servers - once the Admin server is RUNNING.
For the error pasted below , I took the following approach:
1. Added boot.properties file and provided the username and password for all the servers
2. removed the boot.properties file and had to provide the username and password separately. I also noticed here that I get the error below whether I enter the password or leave it blank.
3. reset the password for admin and managed servers followed by the backing up the domain - / data/ldap files (from admin and managed servers)
Despite these approaches, I am still getting the "Authentication denied error"
Looking forward for your suggestions.
<Critical> <WebLogicServer> <BEA-000386> <Server subsystem failed. Reason: weblogic.security.SecurityInitializationException: Authentication denied: Boot identity not valid; The user name and/or password from the boot identity file (boot.properties) is not valid. The boot identity may have been changed since the boot identity file was created. Please edit and update the boot identity file with the proper values of username and password. The first time the updated boot identity file is used to start the server, these new values are encrypted.
weblogic.security.SecurityInitializationException: Authentication denied: Boot identity not valid; The user name and/or password from the boot identity file (boot.properties) is not valid. The boot identity may have been changed since the boot identity file was created. Please edit and update the boot identity file with the proper values of username and password. The first time the updated boot identity file is used to start the server, these new values are encrypted.
        at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.doBootAuthorization(CommonSecurityServiceManagerDelegateImpl.java:960)
        at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.initialize(CommonSecurityServiceManagerDelegateImpl.java:1054)
        at weblogic.security.service.SecurityServiceManager.initialize(SecurityServiceManager.java:873)
        at weblogic.security.SecurityService.start(SecurityService.java:141)
        at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
        Truncated. see log file for complete stacktrace
Caused By: javax.security.auth.login.FailedLoginException: [Security:090303]Authentication Failed: User weblogic weblogic.security.providers.authentication.LDAPAtnDelegateException: [Security:090295]caught unexpected exception
        at weblogic.security.providers.authentication.LDAPAtnLoginModuleImpl.login(LDAPAtnLoginModuleImpl.java:251)
        at com.bea.common.security.internal.service.LoginModuleWrapper$1.run(LoginModuleWrapper.java:110)
        at java.security.AccessController.doPrivileged(Native Method)
        at com.bea.common.security.internal.service.LoginModuleWrapper.login(LoginModuleWrapper.java:106)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        Truncated. see log file for complete stacktrace
>
<Dec 12, 2013 6:44:27 AM EST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to FAILED>
<Dec 12, 2013 6:44:27 AM EST> <Error> <WebLogicServer> <BEA-000383> <A critical service failed. The server will shut itself down>
<Dec 12, 2013 6:44:27 AM EST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to FORCE_SHUTTING_DOWN>

Answer 1

Try this :-
CREATE A NEW ADMIN ACCOUNT IN WEBLOGIC and use the below username and password for starting the servers:-
1)Shutdown the weblogic server
2)setDomain.env
3)back up DefaultAuthenticatorInit.ldift file under security
4)Go to security folder
5) java weblogic.security.utils.AdminAccount newAdmin newPassword .
6) goto servers data/ldap and remove the following file del DefaultAuthenticatormyrealmInit.initialized