Embedded LDAP error

When starting the Weblogic admin server the following error reports continuously. The LDAP or it's changelog index has become corrupted (in my case it was due to server running out of space during startup).

####<Dec 12, 2015 12:17:00 PM CST> <Error> <EmbeddedLDAP> <myserver.example.edu> <my_admin> <VDE Replication Thread> <<anonymous>> <> <e412251de17330a1:535cadc6:151c23028bb:-8000-0000000000000007> <1450662420044> <BEA-000000> <Error reading changelog entry#: 0>
####<Dec 12, 2015 12:17:00 PM CST> <Critical> <EmbeddedLDAP> <myserver.example.edu> <my_admin> <VDE Replication Thread> <<anonymous>> <> <e412251de17330a1:535cadc6:151c23028bb:-8000-0000000000000007> <1450662420044> <BEA-000000> <java.lang.NullPointerException
        at com.octetstring.vde.EntryChanges.readBytes(EntryChanges.java:256)
        at com.octetstring.vde.EntryChanges.<init>(EntryChanges.java:72)
        at com.octetstring.vde.replication.BackendChangeLog.getChange(BackendChangeLog.java:548)
        at com.octetstring.vde.replication.Replicator.run(Replicator.java:180)
        at com.octetstring.vde.replication.Replication.run(Replication.java:339)

Steps to Resolve

Shutdown Admin Server and all Managed Servers
cd $WEBLOGIC_DOMAIN/servers/my_admin/data/ldap
mv ldapfiles/changelog.index ldapfiles/_changelog.index
mv ldapfiles/changelog.data ldapfiles/_changelog.data

Unzip a backup from the backups directory
unzip $WEBLOGIC_DOMAIN/servers/my_admin/data/ldap/backup/EmbeddedLDAPBackup.zip -d /

Start Admin Server, then rest of managed servers.
changelog.inded and changelog.data will be recreated.

You might need to re-add any customisations to the Internal LDAP. Using the Admin Console, check Summary of Security Realms >myrealm >Users and Groups and filter on DefaultAuthenticator to check the users still exist.