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105 lines
3.3 KiB
Groff
105 lines
3.3 KiB
Groff
.TH SLAPD-BDB 5 "30 April 2002" "OpenLDAP LDVERSION"
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.\" Copyright 1998-2002 The OpenLDAP Foundation All Rights Reserved.
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.\" Copying restrictions apply. See COPYRIGHT/LICENSE.
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.\" $OpenLDAP$
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.SH NAME
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slapd-bdb \- BDB backend to slapd
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.SH SYNOPSIS
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ETCDIR/slapd.conf
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.SH DESCRIPTION
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The BDB backend to
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.BR slapd (8)
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is the recommended backend for a normal slapd database.
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It uses the Sleepycat BerkelyDB package to store data.
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It makes extensive use of indexing and caching to speed data access.
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.SH CONFIGURATION
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These
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.B slapd.conf
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options apply to the BDB backend database.
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That is, they must follow a "database bdb" line and come before any
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subsequent "backend" or "database" lines.
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Other database options are described in the
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.BR slapd.conf (5)
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manual page.
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.TP
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.B cachesize <integer>
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Specify the size in entries of the in-memory cache maintained
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by the BDB backend database instance.
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The default is 1000 entries.
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.TP
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.B checkpoint <kbyte> <min>
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Specify the frequency for checkpointing the database transaction log.
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A checkpoint operation flushes the database buffers to disk and writes
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a checkpoint record in the log.
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The checkpoint will occur if either <kbyte> data has been written or
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<min> minutes have passed since the last checkpoint.
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Both arguments default to zero, in which case they are ignored.
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See the Berkeley DB reference guide for more details.
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.TP
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.B dbnosync
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Specify that on-disk database contents should not be immediately
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synchronized with in memory changes.
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Enabling this option may improve performance at the expense of data
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security.
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.TP
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.B directory <directory>
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Specify the directory where the BDB files containing this database and
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associated indexes live.
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A separate directory must be specified for each database.
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The default is
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.BR LOCALSTATEDIR/openldap-data .
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.TP
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.B dirtyread
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Allow reads of modified but not yet committed data.
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Usually transactions are isolated to prevent other operations from
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accessing uncommitted data.
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This option may improve performance, but may also return inconsistent
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results if the data comes from a transaction that is later aborted.
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In this case, the modified data is discarded and a subsequent search
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will return a different result.
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.TP
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.B
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index {<attrlist>|default} [pres,eq,approx,sub,<special>]
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Specify the indexes to maintain for the given attribute (or
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list of attributes).
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Some attributes only support a subset of indexes.
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If only an <attr> is given, the indices specified for \fBdefault\fR
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are maintained.
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Note that setting a default does not imply that all attributes will be
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indexed.
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A number of special index parameters may be specified.
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The index type
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.B sub
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can be decomposed into
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.BR subinitial ,
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.BR subany ,\ and
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.B subfinal
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indices.
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The special type
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.B nolang
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may be specified to disallow use of this index by language subtypes.
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The special type
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.B nosubtypes
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may be specified to disallow use of this index by named subtypes.
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Note: changing index settings requires rebuilding indices, see
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.BR slapindex (8).
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.TP
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.B lockdetect {oldest|youngest|fewest|random|default}
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Specify which transaction to abort when a deadlock is detected.
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The default is the same as
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.BR random .
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.TP
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.B mode <integer>
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Specify the file protection mode that newly created database
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index files should have.
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The default is 0600.
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.SH FILES
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ETCDIR/slapd.conf
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.SH SEE ALSO
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.BR slapd.conf (5),
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.BR slapd (8),
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.BR slapadd (8),
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.BR slapcat (8),
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.BR slapindex (8).
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