So, if some parameters are large (they can be up to 1 GB-1, remember) then we can bloat the log file severely. I think we need to place an upper limit on the strings that we're going to log -- as inspiration, callers of ExecBuildValueDescription uses 64 chars per value maximum. Something like that seems reasonable. So I think you need to add some pg_mbcliplen() calls in a couple of places in exec_bind_message.
-- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
