Fatal error: Allowed memory size […] on wp-includes/wp-db.php

Exhausted memory is often a good indication of an infinite loop in your code.

First try deactivating all plugins to rule-out a plugin-specific issue and try switching themes to rule-out a theme-specific issue.

If that doesn’t work, check your database for massive tables. The wp_options table can get bloated with autoloaded options sometimes when a plugin malfunctions.

You can try upping the allowed memory size from 256M to 512M to see if that helps with your problem, but 256M should definitely be enough for most cases.

Checking my db I’m pretty sure it comes from post table
https://www.awesomescreenshot.com/image/1746541/cacc3e5440dbccce96f060da1ba4c5a7

wp_options have 454 rows/2.6MiB

any tip about this problem?