Re: pgsql database .1 .2 .3 file names

Bryan Biggers <bbiggers(at)tds(dot)net> writes:
> Can anyone tell me what the data file names with the .1 .2 .3 etc.
> extensions are? Are these undo versions of my tables or something? I
> need to recover some disk space and I'm wondering if I need them.

You will be very very unhappy if you remove those files (or anything
else underneath $PGDATA). What you have there is just a 7-gig table.
We split large tables into 1Gb segments for portability reasons.

If you think that there's a lot of wasted space within the files, you
might find it profitable to use (some combination of) VACUUM FULL,
CLUSTER, or REINDEX.

regards, tom lane