Fatal error: Out of memory

I took a look at @jame’s pinned post and saw a reference to “sql” issues at the bottom and they were helpful overall but it still didn’t address my particular issue so I wanted to find out what is going on and how I can resolve it.

First off, the error:

Fatal error: Out of memory (allocated 134062080) (tried to allocate 274432 bytes) in /wp-includes/wp-db.php on line 1811

Second a look at that line:

$this->result = mysqli_query( $this->dbh, $query );

This led to me believe it has something to do with the rest of the mysqli issues that @james referred to but I am not sure exactly how this is applying to me given the error is about memory allocation.

The general thinking would be its not getting enough memory, but here is the problem, I have 2 GB dedicated RAM on this installation, there is NOTHING in the world that can overflow that limit in MY setup. Secondly, the amount of memory showing as allocated and what little its failing on, makes no sense to me. Especially that simply F5 or reloading the page moves on.

The issue occurs on the backend, on the front end, and especially on post editing/publishing. Before I read about the removal of the “hiding” suggesting that the problems were there before just not visible, ok, I can get behind that because I tested (before reading that) by cloning the site, db and all and simply rolling back the version to one before 4.5.3 because that’s when it started happening. But since its completely killing the render, my guess is its more than just a hiding issue, thoughts?

So anyone know what’s going on here? My site is up to date, my plugins, themes and everything are up to date, my db is pruned, regularly and optimized, so its not that. The server is fast, so is the MySQL db server. No other app connects to that DB. I am at my wits end, as I can’t narrow it down to what the problem is, any assist would be greatly appreciated, especially if someone has gone down the path outlined by @james and has discovered a solution.

TIA.