EmbeddedLDAP BEA-171522 An error occurred while initializing the Embedded LDAP Server

Issue -

 <EmbeddedLDAP> <BEA-171522> <An error occurred while initializing the Embedded LDAP Server. The exception tho
wn is java.lang.ClassCastException: com.octetstring.vde.backend.BackendRoot. This may indicate a problem with the data files for the Embedded LDAP Ser
ver. If the problem is with the data files and it can not be corrected, backups of previous versions of the data files exist in ./servers/AdminServer/
data/ldap/backup.>
 <Critical> <WebLogicServer> <BEA-000362> <Server failed. Reason:

There are 1 nested errors:

java.lang.ClassCastException: com.octetstring.vde.backend.BackendRoot
        at weblogic.ldap.EmbeddedLDAP.start(EmbeddedLDAP.java:273)
        at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
        at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
        at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)

>
 <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>

Solution -

Took back up of ldap directory
Removed the ldap directory from managed domain server  /apps/bea92/domains/mx_domain/servers/AdminServer/data/

Restarted the services