I'm trying to glue remote database, provided by ldap backend with local hdb. I have following settings: dn: olcDatabase={1}hdb,cn=config objectClass: olcDatabaseConfig objectClass: olcHdbConfig olcDatabase: {1}hdb olcDbDirectory: /var/lib/ldap olcDbCheckpoint: 512 30 olcDbConfig: {0}set_cachesize 0 2097152 0 olcDbConfig: {1}set_lk_max_objects 1500 olcDbConfig: {2}set_lk_max_locks 1500 olcDbConfig: {3}set_lk_max_lockers 1500 olcDbIndex: objectClass eq olcLastMod: TRUE olcRootDN: cn=admin,cn=config olcSuffix: dc=local dn: olcOverlay={0}glue,olcDatabase={1}hdb,cn=config objectClass: olcOverlayConfig objectClass: olcConfig objectClass: top olcOverlay: {0}glue ... dn: olcDatabase={3}ldap,cn=config objectClass: olcLDAPConfig objectClass: olcDatabaseConfig objectClass: olcConfig objectClass: top olcDatabase: {3}ldap olcDbChaseReferrals: TRUE olcDbRebindAsUser: TRUE olcDbURI: ldap://remote.server olcRootDN: cn=admin,cn=config olcSubordinate: TRUE olcSuffix: dc=corp,dc=local" But when I try to load it into cn=config, I get next error: [LDAP: error code 80 - <olcSuffix> namingContext "dc=corp,dc=local" already served by a preceding hdb database] Version: 2.4.25-1.1ubuntu4.1