To view the default list of indexes, run dsconfig with the
list-local-db-indexes option.
$ bin/dsconfig list-local-db-indexes --backend-name userRoot
Local DB Index : Type : index-type
-------------------:---------:--------------------
aci : generic : presence
cn : generic : equality, substring
ds-entry-unique-id : generic : equality
givenName : generic : equality, substring
mail : generic : equality
member : generic : equality
objectClass : generic : equality
sn : generic : equality, substring
telephoneNumber : generic : equality
uid : generic : equality
uniqueMember : generic : equality