Weblogic Admin Server for oam_domain failed during startup due to invalid boot.properties files- Server state changed to FORCE_SHUTTING_DOWN

When I try to start BI server, found below error from weblogic server.

Weblogic Admin Server for oam_domain failed during startup due to invalid boot.properties files.

Error:

<Notice> <Security> <BEA-090082> <Security initializing using security realm myrealm.>

<Critical> <Security> <BEA-090402> <Authentication denied for weblogic: 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 for weblogic: 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(Unknown Source)

at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.initialize(Unknown Source)

at weblogic.security.service.SecurityServiceManager.initialize(Unknown Source)

at weblogic.security.SecurityService.start(SecurityService.java:141)

at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)

at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)

at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)

>

<Notice> <WebLogicServer> <BEA-000365> <Server state changed to FAILED>

<Error> <WebLogicServer> <BEA-000383> <A critical service failed. The server will shut itself down>

<Notice> <WebLogicServer> <BEA-000365> <Server state changed to FORCE_SHUTTING_DOWN>

<Info> <WebLogicServer> <BEA-000236> <Stopping execute threads.>

Sol:

1. Delete boot.properties (location: DOMAIN_HOME/servers/AdminServer/security)
2. Delete ldap directory (location: DOMAIN_HOME/servers/AdminServer/data)
3. Restart the weblogic server