.\" Copying restrictions apply. See COPYRIGHT/LICENSE.
.\" $OpenLDAP$
.SH NAME
-slapd-ldbm \- LDBM backend to slapd
+slapd-ldbm \- Discontinued LDBM backend to slapd
.SH SYNOPSIS
ETCDIR/slapd.conf
.SH DESCRIPTION
-The LDBM backend to
-.BR slapd (8)
-is an easy\-to\-configure but obsolete database backend. It does not
-offer the data durability features of the BDB and HDB backends and
-hence is considered deprecated in favor of these robust backends.
-LDBM uses lightweight non\-transactional data interfaces, such as those
-provided by GDBM or Berkeley DB, to store data. It makes extensive
-use of indexing and caching to speed data access.
-.SH CONFIGURATION
-These
-.B slapd.conf
-options apply to the LDBM backend database.
-That is, they must follow a "database ldbm" line and come before any
-subsequent "backend" or "database" lines.
-Other database options are described in the
-.BR slapd.conf (5)
-manual page.
-.TP
-.B cachesize <integer>
-Specify the size in entries of the in-memory cache maintained
-by the LDBM backend database instance.
-The default is 1000 entries.
-.TP
-.B dbcachesize <integer>
-Specify the size in bytes of the in-memory cache associated with each
-open index file.
-If not supported by the underlying database method, this option is
-ignored without comment.
-The default is 100000 bytes.
-.TP
-.B dbnolocking
-Specify that no database locking should be performed.
-Enabling this option may improve performance at the expense of data security.
-Do NOT run any slap tools while slapd is running.
-.TP
-.B dbnosync
-Specify that on-disk database contents should not be immediately
-synchronized with in memory changes.
-Enabling this option may improve performance at the expense of data
-security.
-.TP
-.B dbsync <frequency> <maxdelays> <delayinterval>
-Flush dirty database buffers to disk every
-.B <seconds>
-seconds.
-Implies
-.B dbnosync
-(ie. individual updates are no longer written to disk).
-It attempts to avoid syncs during periods of peak activity by waiting
-.B <delayinterval>
-seconds if the server is busy, repeating this delay up to
-.B <maxdelays>
-times before proceeding.
-It is an attempt to provide higher write performance with some amount
-of data security.
-Note that it may still be possible to get an inconsistent database if
-the underlying engine fills its cache and writes out individual pages
-and slapd crashes or is killed before the next sync.
-.B <maxdelays>
-and
-.B <delayinterval>
-are optional and default to
-.B 12
-and
-.B 5
-respectively, giving a total elapsed delay of 60 seconds before a sync
-will occur.
-.B <maxdelays>
-may be zero, and
-.B <delayinterval>
-must be 1 or greater.
-.TP
-.B directory <directory>
-Specify the directory where the LDBM files containing this database and
-associated indexes live.
-A separate directory must be specified for each database.
-The default is
-.BR LOCALSTATEDIR/openldap-data .
-.TP
-.B
-index {<attrlist>|default} [pres,eq,approx,sub,<special>]
-Specify the indexes to maintain for the given attribute (or
-list of attributes).
-Some attributes only support a subset of indexes.
-If only an <attr> is given, the indices specified for \fBdefault\fR
-are maintained.
-Note that setting a default does not imply that all attributes will be
-indexed. Also, for best performance, an
-.B eq
-index should always be configured for the
-.B objectClass
-attribute.
+LDBM was the original database backend to
+.BR slapd (8),
+and was supported up to OpenLDAP 2.3.
+It has been superseded by the more robust BDB and HDB backends.
-A number of special index parameters may be specified.
-The index type
-.B sub
-can be decomposed into
-.BR subinitial ,
-.BR subany ,\ and
-.B subfinal
-indices.
-The special type
-.B notags
-(or
-.BR nolang )
-may be specified to disallow use of this index by subtypes with tagging
-options (such as language options).
-The special type
-.B nosubtypes
-may be specified to disallow use of this index by named subtypes.
-Note: changing index settings requires rebuilding indices, see
-.BR slapindex (8).
-.TP
-.B mode <integer>
-Specify the file protection mode that newly created database
-index files should have.
-The default is 0600.
-.SH ACCESS CONTROL
-The
-.B ldbm
-backend honors access control semantics as indicated in
-.BR slapd.access (5).
-.SH FILES
-.TP
-ETCDIR/slapd.conf
-default slapd configuration file
.SH SEE ALSO
-.BR slapd.conf (5),
.BR slapd (8),
-.BR slapadd (8),
-.BR slapcat (8),
-.BR slapindex (8).
+.BR slapd-bdb (5),
+.BR slapd.backends (5).
.SH ACKNOWLEDGEMENTS
.so ../Project
projects / openldap / commitdiff