What exactly is a "tuple"? One entire row of a table? Or one "line" of a
reply to a query? (I suspect it's the entire row of a table, but I have had
a case with text fields, where one field was updated with about 7k. All
selects would deal either with that field or the others. The first time the
8k limit struck was with with a pg_dump/restore were obviously the entire
row was used, so maybe it's just the size of the reply?)
Cheers,
Patrick