Re: Query out of memory

From: aditya desai <admad123(at)gmail(dot)com>
To: Vijaykumar Jain <vijaykumarjain(dot)github(at)gmail(dot)com>
Cc: pgsql-sql <pgsql-sql(at)lists(dot)postgresql(dot)org>
Subject: Re: Query out of memory
Date: 2021-10-18 19:03:27
Message-ID: CAN0SRDExG80fC8sEHMT9aw7kJEUVPCBjtLQ7jsyA_SB9XQ7EPw@mail.gmail.com
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Not many active connections. Only 30-40.

On Monday, October 18, 2021, Vijaykumar Jain <
vijaykumarjain(dot)github(at)gmail(dot)com> wrote:

> Work memory 2 GB ?
> Is this intentional?
> How many max active connections do you see?
>
> if you have too many connections. You can try toning it down to
> https://pgtune.leopard.in.ua/ to start with.
>
>
> On Mon, Oct 18, 2021, 10:13 PM aditya desai <admad123(at)gmail(dot)com> wrote:
>
>> Hi,
>> I am running the below query. Table has 21 million records. I get an Out
>> Of Memory error after a while.(from both pgadmin and psql). Can someone
>> review DB parameters given below.
>>
>> select t.*,g.column,a.column from
>> gk_staging g, transaction t,account a
>> where
>> g.accountcodeis not null AND
>> g.accountcode::text <> '' AND
>> length(g.accountcode)=13 AND
>> g.closeid::text=t.transactionid::text AND
>> subsrting(g.accountcode::text,8)=a.mask_code::text
>>
>> Below are system parameters.
>> shared_buffers=3GB
>> work_mem=2GB
>> effective_cache_size=10GB
>> maintenance_work_mem=1GB
>> max_connections=250
>>
>> I am unable to paste explain plan here due to security concerns.
>>
>> Regards,
>> Aditya.
>>
>>

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