object not found?

[ks@thinc.org]

Hello,

Pardon my ignorance, I am very new to this. Following is what I have gone
so far... but seem to stuck with the query part.

------[contain of mydb.txt]----------
dn: o=CHPNET,c=US
objectClass: organization

dn: ou=Members,o=xyz,c=US
objectClass: organizationalUnit

dn: cn=jfox,ou=Members,o=xyz,c=US
cn: Joe
sn: Fox
ou: Members
mail: jfox@valium.thinc.org
objectClass: person
userPassword: <password>
--------------------------------------
ldif2ldbm -f /usr/local/etc/openldap/slapd.conf -i /usr/local/etc/openldap/mydb.txt


then I did a 

ldapsearch -b 'o=xyz,c=US' 'objectClass*'
returns with a
ldap_search: No such object <- ?

-----------------------------

which part did I done wrong?