| From: | Patrick B <patrickbakerbr(at)gmail(dot)com> |
|---|---|
| To: | Venkata B Nagothi <nag1010(at)gmail(dot)com> |
| Cc: | pgsql-general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Checking Postgres Streaming replication delay |
| Date: | 2016-10-31 20:39:01 |
| Message-ID: | CAJNY3isOdVLMuUEUpwj3k=b6OUpjSEcyeqK3EzN4PdCAAbe4vQ@mail.gmail.com |
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| Lists: | pgsql-general |
2016-10-31 15:54 GMT+13:00 Venkata B Nagothi <nag1010(at)gmail(dot)com>:
>
> On Mon, Oct 31, 2016 at 11:57 AM, Patrick B <patrickbakerbr(at)gmail(dot)com>
> wrote:
>
>> Hi guys,
>>
>> I'm using this query to measure the delay between a Master and a
>> Streaming Replication Slave server, using PostgreSQL 9.2.
>>
>> SELECT
>>> pg_last_xlog_receive_location() receive,
>>> pg_last_xlog_replay_location() replay,
>>> (
>>> extract(epoch FROM now()) -
>>> extract(epoch FROM pg_last_xact_replay_timestamp())
>>> )::int lag;
>>
>>
>> In your opinion, is that right?
>>
>> Yes, thats right.
>
> Regards,
>
> Venkata B N
> Database Consultant
>
>
Thanks!!!!
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