How to increase memory in Wordpress?

Question

WordPress

Hello, there is a script that works with a huge number of records in the database. For this project, we rented a VPS with 4GB of RAM.
The script is run from the WP admin and returns an error

E_ERROR Error in file �wp-db.php� at line 1889: Allowed memory size of 268435456 bytes exhausted (tried to allocate 80 bytes)

Tried adding to wp-config:

define('WP_MEMORY_LIMIT', '512M');
define('WP_MAX_MEMORY_LIMIT', '512M');

The result does not change... Always Allowed memory size of 268435456 bytes.
In php.ini memory_limit 1024M
Costs apache+nginx
How to show WordPress that memory has changed?

Answer 1

It was in WordPress, it was in one of the PHP files, not in the config, there was a memory_limit, this file is very easy to find by searching for files with the *.php mask

Answer 2

If it’s still relevant, in my experience it’s not the issue here, but the server settings, since the default VP takes exactly the server settings.