(This question was answered several days ago on this list; please check
the list archives before posting. I believe it's also in the FAQ.)
> If PostgreSQL is run on a system that has a file size limit (2
> gig?), where might cause us to hit the limit?
Postgres will never internally use files (e.g. for tables, indexes,
etc) larger than 1GB -- at that point, the file is split.
However, you might run into problems when you export the data from Pg
to another source, such as if you pg_dump the contents of a database >
2GB. In that case, filter pg_dump through gzip or bzip2 to reduce the
size of the dump. If that's still not enough, you can dump individual
tables (with -t) or use 'split' to divide the dump into several files.
Cheers,
Neil