Re: [PERFORM] How to log quires which are taking time in PostgreSQL9.1.

From: Luis Fernando Simone [mailto:luis.simone@datacoper.com.br]
Sent: 23 February, 2017 10:29 PM
To: Dinesh Chandra 12108 <Dinesh.Chandra@cyient.com>
Cc: ProPAAS DBA <dba@propaas.com>; pgsql-performance@postgresql.org
Subject: Re: [PERFORM] How to log quires which are taking time in PostgreSQL 9.1.

De: "Dinesh Chandra 12108" <Dinesh.Chandra@cyient.com>
Para: "ProPAAS DBA" <dba@propaas.com>, pgsql-performance@postgresql.org
Cc: "Dinesh Chandra 12108" <Dinesh.Chandra@cyient.com>
Enviadas: Quinta-feira, 23 de Fevereiro de 2017 13:44:05
Assunto: Re: [PERFORM] How to log quires which are taking time in PostgreSQL 9.1.

Thanks for reply.

May I know where it will create log??

In pg_log directory or somewhere else.

set log_min_duration_statement = 300,000

(300,000 ms = 5min)

From the docs:


log_min_duration_statement (integer)

Causes the duration of each completed statement to be logged if the statement ran for at least the specified number of milliseconds. Setting this to zero prints all statement durations. Minus-one (the default) disables logging statement durations. For example, if you set it to 250ms then all SQL statements that run 250ms or longer will be logged. Enabling this parameter can be helpful in tracking down unoptimized queries in your applications. Only superusers can change this setting.

Dear expert,

 

I want to log only that queries which are taking around 5 minutes to execute.

I have a database size >1.5T and using PostgreSQL 9.1 with Linux OS.

 

 

Thanks in advance.

 

Regards,

Dinesh Chandra

|Database administrator (Oracle/PostgreSQL)| Cyient Ltd. Noida.

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Mobile: +91-9953975849 | Ext 1078 |dinesh.chandra@cyient.com

Plot No. 7, NSEZ, Phase-II ,Noida-Dadri Road, Noida - 201 305,India.

 

 

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