T he unique ID generator configuration attributes are stored under cn=uniqueidgenerator,cn=config. T he cn=uniqueid generator entry is an instance of theextensibleObject object class.nsStateT his attribute saves the state of the unique ID generator across server restarts. T his attribute ismaintained by the server. Do not edit it.Parameter DescriptionEntry DN cn=uniqueid generator, cn=configValid ValuesDefault ValueSyntax DirectoryStringExample nsState: AbId0c3oMIDUntiLCyYNGgAAAAAAAAAA2.4. Configuration Object ClassesMany configuration entries simply use the extensibleObject object class, but some require otherobject classes. T hese configuration object classes are listed here.2.4 .1. changeLogEntry (Object Class)T his object class is used for entries which store changes made to the Directory Server entries.T o configure Directory Server to maintain a changelog that is compatible with the changelogimplemented in Directory Server 4.1x, enable the Retro Changelog Plug-in. Each entry in the changeloghas the changeLogEntry object class.T his object class is defined in Changelog Internet Draft.Superior ClasstopOID2.16.840.1.113730.3.2.1Required AttributesobjectClass Defines the object classes for the entry.changeNumber Contains a number assigned arbitrarily to thechangelog.changeT ime T he time at which a change took place.changeT ype T he type of change performed on an entry.targetDn T he distinguished name of an entry added,modified or deleted on a supplier server.Allowed Attributeschanges Changes made to the Directory Server.deleteOldRdn A flag that defines whether the old RelativeDistinguished Name (RDN) of the entry should bekept as a distinguished attribute of the entry orshould be deleted.newRdn New RDN of an entry that is the target of amodrdn or moddn operation.newSuperior Name of the entry that becomes the immediatesuperior of the existing entry when processing aMODDN operation.2.4 .2. directoryServerFeature (Object Class)T his object class is used specifically for entries which identify a feature of the directory service. T hisobject class is defined by Directory Server.Superior ClassRed Hat D irectory Server 8.1 Configuration and Command Reference 91