2017-12-26 14:44 GMT+01:00 Martin Marques <martin.marq...@2ndquadrant.com>:

> El 26/12/17 a las 09:52, Edson Carlos Ericksson Richter escribió:
> > Recently I had a problem with a base file with size 0 in a standby
> server.
> >
> > This raised one question: does PostgreSQL (9.6.6) check base integrity
> > at startup?
> >
> > At least if there are 0 byte size files in base dir? Or CRC? Something?
>
> Yes it has CRC check, but only if you initialize the cluster with
> --data-checksums, and there's a price to pay in performance.
>
>
It has CRC check, but it is used in runtime - when data are necessary

So Postgres usually check nothing on start - few system tables and indexes

Regards

Pavel

>
> --
> Martín Marqués                http://www.2ndQuadrant.com/
> PostgreSQL Development, 24x7 Support, Training & Services
>
>

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