Kim <kim(at)myemma(dot)com> writes:
> In looking around the catalogs to try and see any more clues, I took a
> look at pg_namespace. There were temp table namespaces listed there,
> however there should be no temp tables on the system right now at all.
This is normal.
> Is there a clean way to clear those temp namespaces out?
Don't worry about them, they'll be cleaned out on re-use. What you need
to find is the system catalog corruption that is causing memory bloat
during a CREATE TABLE. Does a SELECT * FROM pg_class show any problem?
How about pg_attribute and pg_type? If plain SELECT is OK then the
issue is likely index corruption, which you could fix with REINDEX.
regards, tom lane