After client upgraded to CA LDAP r15 from CA LDAP r12, when he does a query from his ldap browser, nothing is returned. If he brings up, CA LDAP r12 and does the same query, it works fine.
The config file from the r12 version of LDAP was re-used in version r15 of LDAP which was the cause of the problem.
In the r12 version of LDAP, the config file is specified with the parameter "sizelimit 0" which means return unlimited results.
In r15 version of LDAP, this has changed and means return no result
You will need to update the sizelimit to -1 to allow for unlimited result return.