INSERT INTO part_schema.cust_info_5
( cust_last_name)
SELECT l_name from public.global_addr WHERE l_name = 'NELL';
ERROR: new row for relation "cust_info_5" violates partition constraint
DETAIL: Failing row containd (null, null, null, null, null, 'NELL',
null, null, null, null, null,null).
Your to: address for this email is so confusing...and this really isn't either a performance issue (meaning speed, not failure to perform at all) or admin issue (general advice for running the server). It seems like a bug report, though one missing the most critical piece of information, the version.
David J.