A directory catalog is an optional directory database that typically contains information aggregated from multiple Domino Directories. A directory catalog includes the type of information that is important for directory services, and excludes other types of information that are part of a Domino Directory, for example Domino configuration information, such as information in Connection documents.
A condensed Directory Catalog is created from the Directory Catalog template (DIRCAT5.NTF). Condensed Directory Catalogs are designed to be small enough to fit on Notes clients. For example, several Domino directories that together contain more than 350,000 users and total 3GB in size, when aggregated in a condensed Directory Catalog are likely to be only about 50MB. To achieve its small size, a condensed Directory Catalog uses a unique design that combines multiple documents from the Domino Directories into single documents in the directory catalog, and that limits the number of sorted views available for lookups. In support of this design, a condensed Directory Catalog relies on FT Search to locate users or groups.
An FT search operation is expensive and thus can decrease the performance of your server. As a result condensed Directory Catalogs are designed for use on Notes clients.
No condensed directory catalog is used
Use a normal Domino directory or one which is an extended Directory Catalog (a derivative of pubnames.ntf).
Changing this setting requires a restart of the server.
Domino crashes when LDAP search is performed against a condensed Directory Catalog
Domino Configuration Tuner:
This setting is included in the DCT
catalog of best practices.