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       slapd-ldbm - LDBM backend to slapd




       The  LDBM  backend to slapd(8) is the database backend which is easiest
       to configure.  However, it does not offer the data durability  features
       of  the  BDB  backend.   It uses Berkeley DB or GDBM to store data.  It
       makes extensive use of indexing and caching to speed data access.


       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

       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.

              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.

              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  <seconds>  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  <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.
              <maxdelays> and <delayinterval> are optional and default  to  12
              and  5  respectively, giving a total elapsed delay of 60 seconds
              before  a  sync  will  occur.   <maxdelays>  may  be  zero,  and
              <delayinterval> must be 1 or greater.

       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

       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  specified.   The
              index  type  sub  can be decomposed into subinitial, subany, and
              subfinal indices.  The special type notags (or  nolang)  may  be
              specified to disallow use of this index by subtypes with tagging
              options (such as language options).  The special type nosubtypes
              may  be  specified  to  disallow  use  of  this  index  by named
              subtypes.  Note: changing  index  settings  requires  rebuilding
              indices, see slapindex(8).

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


              default slapd configuration file


       slapd.conf(5), slapd(8), slapadd(8), slapcat(8), slapindex(8).