back-sql - table lock

["marek-openldap" <marek-openldap@o2.pl>]

Hi

I successfuly created connection from OpenLDAP to my Informix database. I 
can see everything in LDAP Browser:)
I have noticed that when slapd is running I cannot insert data into table 
using sql client. I get error from my db:
243: Could not position within a table (user).
113: ISAM error: the file is locked.

Is there any lock or transaction isolation level problem?

Regards
Marek