root@slave:~# /etc/init.d/slapd restart
Restarting ldap server(s).
Stopping ldap server(s): slapd ...done.
Check database: ...WARNING.
WARNING: There are stale locks in LDAP backend Berkeley DB.
WARNING: If slapd does not respond, manual LDAP dump/restore may be necessary.
Continuing BDB database check: ...done.
Starting ldap server(s): slapd ...done.
Found failed.ldif. Importing ...failed.
Please check /var/log/univention/listener.log.
You can find the failed modifications in /tmp/file8Vc5l0
Check them for being sync with the master-LDAP, then delete /var/lib/univention-directory-replication/failed.ldif and start the listener again typing: