| From: | Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> |
|---|---|
| To: | Neto pr <netoprbr9(at)gmail(dot)com>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: query causes connection termination |
| Date: | 2017-11-23 00:32:20 |
| Message-ID: | a59bb053-4bbb-fb2c-744a-d08b9be46d1f@2ndquadrant.com |
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| Lists: | pgsql-general |
On 11/23/2017 01:25 AM, Neto pr wrote:
> Another fact is that when executing the query without the command
> EXPLAIN ANALYZE, the result is usually returned after a few minutes.
> I do not understand, because when using the EXPLAIN ANALYZE command the
> dbms closes the connection.
> Anyone have any tips on why this occurs?
>
Attach gdb to the backend, run the query and when it fails get us the
backtrace. So something like
1) select pg_backend_pid()
2) gdb -p $PID
3) run the EXPLAIN ANALYZE again
4) watch the gdb session, when it fails do 'bt'
You need to install debuginfo first, so that the backtrace makes sense.
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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