Hii List, I have changed the value of " directory" directive under database section of my slapd.conf file of openldap-2.2.13 (/var/lib/ldap) to the one previously used by our openldap-2.4.7(/usr/local/var/openldap-data). My berkeley db version is 4.6.21... I am not sure if the machine has some other versions of berkeley db already installed.(rpm -qa|grep berkeleydb* has not returned any value) The error when i start slapd is:( A part) /usr/sbin/slapd -d127 -h "ldap:///" slapd startup: initiated. bdb_db_open: dc=bsnl,dc=com bdb_db_open: dbenv_open(/usr/local/var/openldap-data) bdb(dc=bsnl,dc=com): Program version 4.2 doesn't match environment version bdb_db_open: dbenv_open failed: Invalid argument (22) backend_startup: bi_db_open(0) failed! (22) slapd shutdown: initiated ====> bdb_cache_release_all bdb(dc=bsnl,dc=com): DB_ENV->lock_id_free interface requires an environment conf igured for the locking subsystem slapd shutdown: freeing system resources. bdb(dc=bsnl,dc=com): 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. Anyone please help me as soon as possible..... Thanx in advance Regards, Padmavathi Devi T =====-----=====-----===== Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you