When you list index status, the result is a table, followed by a "Total", which is the total number of indexes, followed by a list of indexes with "Undefined keys" to show the values for which the number of entries exceeded the index entry limit. The table has the following columns. Index Name Name of the index, which takes the form attr.type for attribute indexes, and vlv.name for VLV indexes. Some indexes are for OpenDJ directory server's internal use. Example: givenName.substring Index Type Type of the index, which is Index for attribute indexes, and VLVIndex for VLV indexes. JE Database Name Name of the local-db backend database, which reflects how OpenDJ directory server organizes the data in the database. Example: dc_example_dc_com_givenName.substring Index Valid This is true for valid indexes. If this is false, the index might be degraded. Verify the index, and rebuild the index if necessary. Record Count Number of indexed keys. Use the dbtest dump-database-container command to see how many entry IDs correspond to each key. Undefined Number of keys for which there are too many values to maintain an index, based on the index entry limit. This is recorded as - for VLV indexes. In other words, with the default index entry limit of 4000, if every user in your large directory has an email address ending in @example.com, and a substring index is maintained for mail, then OpenDJ directory server does not maintain indexes for keys corresponding to substrings in @example.com. As a result, an LDAP search with the filter "(mail=*@example.com)" becomes an unindexed search even though a substring index exists for the mail attribute. By default OpenDJ directory server does not allow unindexed searches except by privileged users. This is usually exactly the behavior you want in order to prevent client applications for example from sending searches that return every user in the directory. Clients should refine their search filters instead. 95%, 90%, 85% Number of keys for which the number of values is approaching the index entry limit, having reached the specified percentage. This is a measure of how full the entry ID lists are.