Re: What is the tuplestore?

On Tue, Dec 11, 2018 at 3:58 PM Ron <ronljohnsonjr(at)gmail(dot)com> wrote:
> On 12/10/2018 06:24 PM, Thomas Munro wrote:
> > On Tue, Dec 11, 2018 at 2:56 AM Ron <ronljohnsonjr(at)gmail(dot)com> wrote:
> >> 2018-12-07 06:21:55.504 EST 10.140.181.89(35868) CDS CDSLBXW 13748 SELECT
> >> PostgreSQL JDBC Driver 53100 ERROR: could not write to tuplestore temporary
> >> file: No space left on device
> >>
> >> I see this in the pg_log file, but #1 can't figure out what "tuplestore" is
> >> (Google doesn't help), and #2 there's lots of space on all my file systems.
> >> data/base, where pgsql_tmp lives, has 96GB free.)
> > Maybe the setting log_temp_files could help you identify the query
> > that is doing it?
> >
> > https://www.postgresql.org/docs/current/runtime-config-logging.html#GUC-LOG-TEMP-FILES
>
> Great idea; I've made the change. What do I grep for in the pg_log file?

It should say something like:

LOG: temporary file: path "base/pgsql_tmp/...", size ...
STATEMENT: ...

--
Thomas Munro
http://www.enterprisedb.com