Red Hat DIRECTORY SERVER 8.0 Command Reference Manual page 130

Chapter 3. Plug-in Implemented Server Functionality Reference
• There is mostly write activity.
If these are all true, use the nsslapd-db-home-directory attribute to specify a subdirectory of a
tempfs type filesystem.
The directory referenced by the nsslapd-db-home-directory attribute must be a subdirectory
of a filesystem of type tempfs (such as /tmp). However, Directory Server does not create the
subdirectory referenced by this attribute. This directory must be created either manually or by using a
script. Failure to create the directory referenced by the nsslapd-db-home-directory attribute will
result in Directory Server being unable to start.
Also, if there are multiple Directory Servers on the same machine, their nsslapd-db-home-
directory attributes must be configured with different directories. Failure to do so will result in the
databases for both directories becoming corrupted.
The use of this attribute causes internal Directory Server database files to be moved to the directory
referenced by the attribute. It is possible, but unlikely, that the server will no longer start after the files
have been moved because not enough memory can be allocated. This is a symptom of an overly large
database cache size being configured for the server. If this happens, reduce the size of the database
cache size to a value where the server will start again.
Parameter
Entry DN
Valid Values
Default Value
Syntax
Example
3.4.1.11. nsslapd-db-idl-divisor
This attribute specifies the index block size in terms of the number of blocks per database page.
The block size is calculated by dividing the database page size by the value of this attribute. A value
of 1 makes the block size exactly equal to the page size. The default value of 0 sets the block size
to the page size minus an estimated allowance for internal database overhead. For the majority of
installations, the default value should not be changed unless there are specific tuning needs.
Before modifying the value of this attribute, export all databases using the db2ldif script. Once the
modification has been made, reload the databases using the ldif2db script.
CAUTION
This parameter should only be used by very advanced users.
Parameter
Entry DN
120
Description
cn=config, cn=ldbm database, cn=plugins,
cn=config
Any valid directory name in a tempfs filesystem,
such as /tmp
DirectoryString
nsslapd-db-home-directory: /tmp/slapd-
phonebook
Description
cn=config, cn=ldbm database, cn=plugins,
cn=config