postgres creates a new file (called .1, .2 etc) when the size of the
previous one gets larger than 1GB (as you can see in your ls output)
> I have a database in production with a lot of large objects happening. A
> while ago we noticed that the database directory contained two files
> with the name of the pg_largeobject oid, of which one had the sufix
> ".1". Is this a valid file? Is the table paged when reaching a certain
> size or is it some kind of lost transaction/sort file? I noticed that
> the timestamp of the file both are from today so I guess they should
> both be there... I just want to make sure =)
>
> More info:
>
> select version();
> version
> ---------------------------------------------------------------------
> PostgreSQL 7.2.1 on i386-portbld-freebsd4.4, compiled by GCC 2.95.3
>
>
> select relname from pg_class where oid = 16404;
> relname
> ----------------
> pg_largeobject
>
> # ls -l|sort +4 -n |tail -n2
> -rw------- 1 pgsql pgsql 465461248 Aug 28 09:20 16404.1
> -rw------- 1 pgsql pgsql 1073741824 Aug 28 01:08 16404