HP-UX Directory Server 8.1 configuration, command, and file reference

DescriptionParameter
DirectoryStringSyntax
nsslapd-db-durable-transactions: onExample
3.4.1.9 nsslapd-db-home-directory
To move the database to another physical location for performance reasons, use this parameter
to specify the home directory.
This situation will occur only for certain combinations of the database cache size, the size of
physical memory, and kernel tuning attributes. In particular, this situation should not occur if
the database cache size is less than 100 megabytes.
Reset the nsslapd-db-home-directory attribute for any of the following conditions:
• The disk is heavily used (more than 1 megabyte per second of data transfer).
• There is a long service time (more than 100ms).
• 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.
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.
DescriptionParameter
cn=config, cn=ldbm database, cn=plugins, cn=configEntry DN
Any valid directory name in a tempfs filesystem, such as /tmp
Valid Values
Default Value
DirectoryStringSyntax
nsslapd-db-home-directory: /tmp/slapd-phonebookExample
3.4.1.10 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.
136 Plug-in implemented server functionality reference