Re: large numbers of inserts out of memory strategy

Hi,

On 11/28/2017 06:17 PM, Ted Toth wrote:
> I'm writing a migration utility to move data from non-rdbms data
> source to a postgres db. Currently I'm generating SQL INSERT
> statements involving 6 related tables for each 'thing'. With 100k or
> more 'things' to migrate I'm generating a lot of statements and when I
> try to import using psql postgres fails with 'out of memory' when
> running on a Linux VM with 4G of memory. If I break into smaller
> chunks say ~50K statements then thde import succeeds. I can change my
> migration utility to generate multiple files each with a limited
> number of INSERTs to get around this issue but maybe there's
> another/better way?
> 

The question is what exactly runs out of memory, and how did you modify
the configuration (particularly related to memory).

regards

-- 
Tomas Vondra                  http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services