On 02/06/15 11:10, bernhard.pfeiffer@brz.gv.at wrote:

I configured this index:

index cn eq,sub,approx (...) <= mdb_approx_candidates: (cn) not indexed

Does it help to stop slapd, run sbin/slapindex, restart slapd?

After inserting an index in slapd.conf, you must do that to index your existing values (if any). If you instead use cn=config and add an index over the LDAP protocol, slapd will index the values automatically.