Message-ID: <01abb0f3-8225-480c-9ba6-397018902106@cleistech.it>
Date: Wed, 15 Jan 2025 08:46:36 +0100
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Subject: Re: Intermittent errors when fetching cursor rows on PostgreSQL 16
To: Adrian Klaver <adrian.klaver@aklaver.com>,
 Enrico Schenone <eschenone@cleistech.it>, pgsql-general@lists.postgresql.org
Cc: Massimo Catti <mcatti@cleistech.it>, Livio Pizzolo <lpizzolo@cleistech.it>
References: <446423eb-4a4e-4135-bbb8-4d0e5c7aac3b@cleistech.it>
 <25d5fb16-9bb2-4ad1-969c-eaca03ccbaaf@aklaver.com>
 <6ce80aaa-970b-4432-938a-39a07f811599@cleistech.it>
 <9f60eb26-7d34-4228-bd78-74c6deb90e54@aklaver.com>
 <282c2a48-bb12-4486-b03d-563523cac81b@cleistech.it>
 <2645a89e-d661-4f2b-92b3-01154a78d535@aklaver.com>
 <e2332684-8d0f-47ba-a5ef-5b2b9c9f8cf0@cleistech.it>
 <54689a6a-839c-44c4-90b5-b9692e8e7cb0@aklaver.com>
 <4efe42a2-789c-4957-a564-25199869f6ec@cleistech.it>
 <e906a6a1-e97d-4bf7-afe3-21a430b3a944@aklaver.com>
 <ec5ce003-6ad9-4cfd-8186-6ca66f285ad3@cleistech.it>
 <b5e32ab4-2187-45f0-b360-47f82d481ff8@aklaver.com>
 <382a1eec-2069-4010-bbdb-37260a1a53a7@cleistech.it>
 <cdfa3e0c-a5cc-4f29-bcb7-72056ae03f1e@aklaver.com>
 <eca91527-07a8-42d6-b4d6-7cf75b946dd7@cleistech.it>
 <8d65f84d-ddb3-4d0f-be05-44f443500e41@aklaver.com>
 <54b91cf3-1d0c-4134-89c8-8e76ed46415c@cleistech.it>
 <9dab3561-3b45-4dac-9522-c84192f87d52@aklaver.com>
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From: Enrico Schenone <eschenone@cleistech.it>
In-Reply-To: <9dab3561-3b45-4dac-9522-c84192f87d52@aklaver.com>
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Il 14/01/25 18:56, Adrian Klaver ha scritto:
>
>
> On 1/13/25 11:56 PM, Enrico Schenone wrote:
>> Il 13/01/25 18:26, Adrian Klaver ha scritto:
>
>
>
>>> In your OP you stated:
>>>
>>> "Production environments can be:
>>>
>>> =C2=A0* Distinct application server and DB server on distinct subnets=
 (no
>>> =C2=A0=C2=A0=C2=A0 dropped packet detected on firewall, no memory/dis=
k/network failure
>>> =C2=A0=C2=A0=C2=A0 detected by "nmon" tool)
>>> =C2=A0 * Distinct application server and DB server on same subnet (no=
=20
>>> firewall)
>>> =C2=A0 * Same server for PostgreSQL and applications
>>> "
>>>
>>> In all those cases are the various servers all running completely=20
>>> within the providers infrastructure?
>>>
>> No, the second production environment is On Premises at the customer=20
>> Datacenter under the same vmware hypervisor.en
>
> Which environment did you run the recent prolonged test against?
The first one: Distinct application server and DB server on distinct=20
subnets.
>
>> I'll make more investigations on second and third environments by=20
>> increasing the verbosity of both DB and Application logs.
>>
>> *Enrico Schenone*
>> Software Architect
>>
>
*Enrico Schenone*
Software Architect