Hey saurabh,

More exact steps

https://www.openldap.org/lists/openldap-technical/201411/msg00035.html
//Check slapd is running and you can add/search entry. 
# service slapd status;
# ldapadd -x -W -D "cn=Manager,dc=example,dc=com" -f /root/user4.ldif
# ldapsearch -x cn=user4 -b dc=example,dc=com
# slapcat -l /root/test.ldif            // Slapcat is used to generate an LDAP Directory Interchange Format (LDIF) output based upon the contents of a slapd(8) database

//If above steps are working.
# vim /etc/openldap/slapd.conf
    # database bdb
    database mdb
# service slapd stop
# service slapd restart
# slapadd -l /root/test.ldif
# ldapsearch -x cn=user4 -b dc=example,dc=com                       //Lets test searching exiting user
# ldapadd -x -W -D "cn=Manager,dc=example,dc=com" -f /root/user5.ldif            //Lets add a new us

Thanks

Amit

you would shutdown your ldap server.
slapcat the bdb database out
change your slapd.conf file to use MDB instead of BDB
slapadd your database into mdb

done...

On Jun 2, 2018, at 17:22, Saurabh Lahoti <saurabh.astronomy@gmail.com> wrote:

Dear,

How could we upgrade our bdb to mdb using slapadd..?
----
Thanks & Kind Regards,
Saurabh LAHOTI.

-- 
Thanks
Amit Kumar
!!If you stumble, get back up. 
What happened yesterday, no longer matters.
Today is another day to move closer to your GOAL!!