WordPress XML Sitemap kills posting

To create dynamic Google XML Sitemap for my WP websites I use this plugin Google (XML) Sitemaps Generator for WordPress.

Today I have this strange problem with one of my sites. When I wrote new posts MySQL goes crazy after published them. I saw in MySQL error page some strange line about XML Sitemap that contains more that 2500 posts. This was the problem that made WordPress MySQL base goes crazy. WordPress published new post but then he tried to update xml sitemap and it was too big for him.

It was quite annoying because it happened after each post. I found simple solution to solve this, works perfect for me.

In WordPress admin panel i go to ‘Options’ -> ‘XML-Sitemap’ and then focus on ‘Advanced options’:

WordPress XML Sitemap options

Try to increase the memory limit to: (e.g. “4M”, “16M”)

By default is is empty, I setup it to ‘64M’ and my problem was fixed.