389-ds-base/ldap/ldif/template-suffix-db.ldif.in

# replace the Suffix token with your suffix e.g. dc=example,dc=com
# replace the bename token with your backend name e.g. userRoot
dn: cn=%ds_bename%,cn=ldbm database,cn=plugins,cn=config
objectclass: top
objectclass: extensibleObject
objectclass: nsBackendInstance
nsslapd-suffix: %ds_suffix%
cn: %ds_bename%

dn: cn="%ds_suffix%",cn=mapping tree,cn=config
objectclass: top
objectclass: extensibleObject
objectclass: nsMappingTree
cn: "%ds_suffix%"
nsslapd-state: backend
nsslapd-backend: %ds_bename%