Обсуждение: Monitoring Postgres - Get the SQL queries which are sent to postgres

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Monitoring Postgres - Get the SQL queries which are sent to postgres

От
Nico Grubert
Дата:
Dear list members,

I have a web application running that is connected to my postgres
database. This web application builds dynamically SQL queries and
queries the postgres database. I would like to see these SQL queries.
How can I do this? Is there a way to monitor the SQL queries which are
sent to my postgres database?

Thanks in advance,
Nico

Re: Monitoring Postgres - Get the SQL queries which are sent to postgres

От
"Merlin Moncure"
Дата:
On 10/25/06, Nico Grubert <nicogrubert@gmail.com> wrote:
> Dear list members,
>
> I have a web application running that is connected to my postgres
> database. This web application builds dynamically SQL queries and
> queries the postgres database. I would like to see these SQL queries.
> How can I do this? Is there a way to monitor the SQL queries which are
> sent to my postgres database?

see logging features in postgresql.conf.  I suggest redirecting stderr
to pg_log and playing with rotation features.

merlin

Re: Monitoring Postgres - Get the SQL queries which are sent to postgres

От
"A. Kretschmer"
Дата:
am  Wed, dem 25.10.2006, um 15:56:17 +0200 mailte Nico Grubert folgendes:
> Dear list members,
>
> I have a web application running that is connected to my postgres
> database. This web application builds dynamically SQL queries and
> queries the postgres database. I would like to see these SQL queries.
> How can I do this? Is there a way to monitor the SQL queries which are
> sent to my postgres database?

Set this in your postgresql.conf:

log_statement = all

Reload the server, and then you can find all your statements in the log.


Andreas
--
Andreas Kretschmer
Kontakt:  Heynitz: 035242/47215,   D1: 0160/7141639 (mehr: -> Header)
GnuPG-ID:   0x3FFF606C, privat 0x7F4584DA   http://wwwkeys.de.pgp.net

Re: Monitoring Postgres - Get the SQL queries which are sent to postgres

От
Vivek Khera
Дата:
On Oct 25, 2006, at 10:11 AM, A. Kretschmer wrote:

> Set this in your postgresql.conf:
>
> log_statement = all
>
> Reload the server, and then you can find all your statements in the
> log.

or, preferably, on a per-connection basis, execute this SQL statement:

set log_min_duration_statement = 0

then only those queries for that connection will be logged.
otherwise you get *way* too much stuff to sort out.

Another useful setting which I always enable (in my postgresql.conf
file) is

log_min_error_statement = error

so that any statement that generates an error will be appended to the
error log entry.  otherwise you just see the error notice and have no
clue what caused it.


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