I cant run openldap with postgresql backend

[ZhangPu <zhang@fjh.fujitsu.com>]

hi all

I installed openldap2.1.16/Postgresql7.3, and created pg_ldap, then
psql --d pg_ldap < backsql_create.sql
psql --d pg_ldap < testdb_create.sql
psql --d pg_ldap < testdb_metadata.sql
psql --d pg_ldap < testdb_data.sql
which in /openldap-2.1.16/servers/slapd/back-sql/rdbms_depend/pgsql/

If I started ldapserver, I got:

load_schema_map(): at_query 'SELECT name,sel_expr,from_tbls,join_where,add_proc,
delete_proc,param_order,expect_return,sel_expr_u FROM ldap_attr_mappings WHERE o
c_map_id=?'
load_schema_map(): objectClass 'i' is not defined in schema

What's this?
I installed them all been followed "openldap2.1.16/Postgresql7.3 HOWTO".
What's wrong?

Help me please.
Thanks!

Regards.
zhang@fjh.fujitsu.com