Re: log_statement vs Statistics Collector (pg_stat_database,, etc)

On Thu, Dec 24, 2015 at 7:32 PM, Nik Tek <niktek2005@gmail.com> wrote:

I wanted to capture all the DML statements executed in the database information (execution time, ).

Question:

Can anyone point me pros and cons on either of the approaches.

In my testing, I haven't found any performance degrade on application operations when enabled the additional logging (below logging).

Besides log_min_duration_statement, you can use tools like pg_stat_statements [1] and POWA [2]. POWA authors even did a comparison of performance impact of having log_min_duration_statement (to latter process with pgBadger), using POWA extension and nothing, see [3].

[1] http://www.postgresql.org/docs/current/static/pgstatstatements.html
[2] http://dalibo.github.io/powa/
[3] https://github.com/dalibo/powa/wiki/POWA-vs-pgBadger

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Matheus de Oliveira