You can use DSCC to perform this task. For information, see Directory Service Control Center Interface and the DSCC online help.
Modify the index properties.
$ dsconf set-index-prop -h host -p port suffix-DN attr-name property:value
For example, to enable the approximate index approx-enabled for the preferredLanguage index , use the command:
$ dsconf set-index-prop -h host -p port dc=example,dc=com preferredLanguage approx-enabled:on
You can modify the following properties for each index:
One of the properties that you might want to modify is the optional nsMatchingRule attribute. This attribute contains the OID for any matching rule known by the server. It enables the OID of a language collation order for internationalized indexes, and other matching rules such as CaseExactMatch. For a list of supported locales and the OID of their associated collation order, see Sun Java System Directory Server Enterprise Edition 6.3 Reference.
For more information about index configuration attributes, see Sun Java System Directory Server Enterprise Edition 6.3 Reference.
Regenerate your new indexes.
See To Generate Indexes.
Repeat the previous steps for all servers that include the modified attribute index.