"Markus Wollny" <Markus.Wollny@computec.de> writes:
> pg_stat_activity has some limitations however; if you use a lot of
> dynamically generated complex queries, you might stumble over the 255
> character limit of current_query in pg_stat_activity, statement-strings
> longer than that are just cut off.
The limit has been ~1K, not 255, for a long time (since 8.0).
regards, tom lane