wordpress 4.5.2 issues

I received an email saying my blog had been automatically updated to version 4.5.2
I am no logger able to see it. I get a http 500 error when navigating to http://wendyhome.com
When I try to access: http://wendyhome.com/wp-admin/about.php

I see the following message. Can you advise me on what action I should take as a not very technical person.

Error establishing a database connection

This either means that the username and password information in your wp-config.php file is incorrect or we can’t contact the database server at wendy3house.db.11786533.hostedresource.com. This could mean your host’s database server is down.
•Are you sure you have the correct username and password?
•Are you sure that you have typed the correct hostname?
•Are you sure that the database server is running?

If you’re unsure what these terms mean you should probably contact your host. If you still need help you can always visit the WordPress Support Forums.

Hi,

I just updated our site to WordPress 4.5.2. I am running a CORSA child theme and the site hangs on loading the home page. Im not sure what has gone wrong, as there are no errors, it just won’t load anymore.

About my website : http://sandrineboutry.com/

I just cannot upload any images anymore on my blog post I’m trying desperately to write.

Also, it’s not saving anything from my post draf, and doesn’t even want to center my text.

I’ve been trying for 3 days now to write a blogpost but everytime it’s lost fight against wordpress.

I thought it could be wpml, the multisite thing that needed to be updated, but I did it today and it’s still not working. I just cannot save a draft, center or work on my text to look good, and cannot include a photo (I tryed a copy paste from a word document too… still impossible to center things or insert a photo)

Please help 🙁

Hi, thought I’d chime in here because our site is having the same issue with that line of code. Getting hundreds of these per day in the log file, yet our site seems to be running fine. We’ve tried repairing the tables but still getting the errors. Any ideas?

PHP Warning: Error while sending QUERY packet. PID=19313 in… /public_html/wp-includes/wp-db.php on line 1811

Hmm, how would I do that? Here’s the values that my ect/my.cnf has now:

[mysqld]
skip-networking
slow-query-log
local-infile = 0

max_allowed_packet=268435456
max_connections=200
table_open_cache=256
max_delayed_threads=20
max_tmp_tables=32
query_cache_type=1
query_cache_size=4M
thread_cache_size=4
innodb_file_per_table=1
innodb_use_native_aio=0
default-storage-engine=MyISAM
open_files_limit=10000

Hey I think that fixed it! Log file has been empty since I followed your instructions. Thank you! 🙂