John Iliffe <john.iliffe@xxxxxxxxx> writes:
> Can anybody tell what these files are and what they do, and more importantly
> if they are needed?
They are database table files, and you will certainly be unhappy if you
just manually rm them.
You can read some theory here:
https://www.postgresql.org/docs/9.2/static/storage.html
In particular note the paragraph whose leading sentence is:
"Tablespaces make the scenario more complicated."
What you showed up was the "far end" of a custom tablespace link.
David J.
