Red Hat 8.1 사용자 설명서
Database Attributes under cn=config, cn=ldbm database, cn=plugins, cn=config
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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.
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
Description
Entry DN
cn=config, cn=ldbm database, cn=plugins,
cn=config
cn=config
Valid Values
Any valid directory name in a tempfs filesystem,
such as /tmp
such as /tmp
Default Value
Syntax
Syntax
DirectoryString
Example
nsslapd-db-home-directory: /tmp/slapd-
phonebook
phonebook
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.
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.
modification has been made, reload the databases using the ldif2db script.
WARNING
This parameter should only be used by very advanced users.
Parameter
Description
Entry DN
cn=config, cn=ldbm database, cn=plugins,
cn=config
cn=config
Valid Range
0 to 8
Default Value
0
Syntax
Integer
Example
nsslapd-db-idl-divisor: 2
3.4.1.12. nsslapd-db-logbuf-size
This attribute specifies the log information buffer size. Log information is stored in memory until the
buffer fills up or the transaction commit forces the buffer to be written to disk. Larger buffer sizes
can significantly increase throughput in the presence of long running transactions, highly concurrent
applications, or transactions producing large amounts of data. The log information buffer size is the
transaction log size divided by four.
buffer fills up or the transaction commit forces the buffer to be written to disk. Larger buffer sizes
can significantly increase throughput in the presence of long running transactions, highly concurrent
applications, or transactions producing large amounts of data. The log information buffer size is the
transaction log size divided by four.