Reduce locking in database

I'm a DBA managing a database with Forms connections. I see many SQLs updating primary keys e.g.

UPDATE APPTABLE SET ID=:1,NAME=:2,...

The developer would never add the code to "change" the value of PK column ID. It seems that if one column is updated, Forms adds all columns to the set-list. Is there a way to avoid that? Ideally, I'd like to have some Forms server config parameter to suppress this behavior. If not, code change is fine. If neither, we'll diligently index all unindexed foreign keys to reduce locking.

Also, some queries are appended with FOR UPDATE, not added by the developer. How do we avoid that? Thanks.