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slapd-ldbm



SYNOPSIS

       /etc/openldap/slapd.conf


DESCRIPTION

       The  LDBM backend to slapd(8) is a database which uses one
       of BerkeleyDB, GNU DBM, MDBM or NDBM to  store  data.   It
       makes  extensive use of indexing and caching to speed data
       access.


CONFIGURATION

       These  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 slapd.conf(5) manual page.

       cachesize <integer>
              Specify the size in entries of the in-memory  cache
              maintained  by  the LDBM backend database instance.
              The default is 1000 entries.

       dbcachesize <integer>
              Specify the size in bytes of  the  in-memory  cache
              associated  with each open index file.  If not sup­
              ported by  the  underlying  database  method,  this
              option  is ignored without comment.  The default is
              100000 bytes.

       dbnolocking
              Specify that no database  locking  should  be  per­
              formed.   Enabling  this option may improve perfor­
              mance at the expense of data security.  Do NOT  run
              any slap tools while slapd is running.

       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.

       dbsync <frequency> <maxdelays> <delayinterval>
              Flush dirty database buffers to  disk  every  <sec­
              onds>  seconds.   Implies  dbnosync  (ie. indvidual
              updates  are  no  longer  written  to  disk).    It
              attempts  to  avoid  syncs  during  periods of peak
              activity by waiting <delayinterval> seconds if  the
              server  is busy, repeating this delay up to <maxde­
              lays> times before proceeding.  It is an attempt to
              provide  higher  write performance with some amount
              of data security.  Note that it may still be possi­
              ble to get an inconsistent database if the underly­
              ing engine fills its cache and writes out  individ­

       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 default
              are maintained.  Note that setting a  default  does
              not imply that all attributes will be indexed.

              A  number of special index parameters may be speci­
              fied.  The index type sub can  be  decomposed  into
              subinitial, subany, and subfinal indices.  The spe­
              cial type nolang may be specified to  disallow  use
              of  this  index  by language subtypes.  The special
              type nosubtypes may be specified to disallow use of
              this index by named subtypes.  Note: changing index
              settings requires rebuilding indices,  see  slapin­
              dex(8).

       mode <integer>
              Specify the file protection mode that newly created
              database index files should have.  The  default  is
              0600.


FILES

       /etc/openldap/slapd.conf
              default slapd configuration file


SEE ALSO

       slapd.conf(5),  slapd(8),  slapadd(8), slapcat(8), slapin­
       dex(8).

OpenLDAP 2.1.22             06-26-2003              SLAPD-LDBM(5)

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