DB_CONFIG (barkeley)

["Eudes LEDUCQ" <LEDUCQ@hec.fr>]

Hi,
 
i try to have a well run bdb backend so i have created this file but i
have this following errors , want it means ?
 
====> bdb_cache_release_all
bdb(dc=ghec,dc=fr): DB_ENV->lock_id_free interface requires an
environment configured for the locking subsystem
slapd shutdown: freeing system resources.
bdb(dc=ghec,dc=fr): txn_checkpoint interface requires an environment
configured for the transaction subsystem
bdb_db_destroy: txn_checkpoint failed: Invalid argument (22)
slapd stopped.
connections_destroy: nothing to destroy.

 
is some one can help me ?
 
thx