Hi I had upgraed my opneldap rpm frm 2.3.27 to 2.4.11 with ehelp of the followng link http://staff.osuosl.org/~jeff/openldap/ I had then rebooted my machine and now whne i am starting ldap [root at system-test40 ldap]# /etc/init.d/ldap start Checking configuration files for slapd: bdb_db_open: database "o=netserv_ldap": unclean shutdown detected; attempting recovery. bdb_db_open: database "o=netserv_ldap": recovery skipped in read-only mode. Run manual recovery if errors are encountered. ch_calloc of 1 elems of 480000004 bytes failed slaptest: ../../../servers/slapd/ch_malloc.c:107: ch_calloc: Assertion `0' failed. i tried to do some recovery as mentioned in vairous archives : cd /var/lib/ldap slapd_db_recover -v but it still not able to restart it give me the same error [root at system-test40 ldap]# /etc/init.d/ldap restart Stopping slapd: [FAILED] Checking configuration files for slapd: bdb_db_open: database "o=netserv_ldap": unclean shutdown detected; attempting recovery. bdb_db_open: database "o=netserv_ldap": recovery skipped in read-only mode. Run manual recovery if errors are encountered. ch_calloc of 1 elems of 480000004 bytes failed slaptest: ../../../servers/slapd/ch_malloc.c:107: ch_calloc: Assertion `0' failed. [ OK ] Starting slapd: [ OK ] [root at system-test40 ldap]# /etc/init.d/ldap status slapd is stopped has any one encounterd the same issue ......... thanks for all the help !! -- Regards Agnello D'souza