vBulletin Database error emails..

[TBevilacqua]

Guys for a while now we've been recieving alot of emails about errors on pages outside the forums.. it doesn't make much sense, heres an example email:

Database error in vBulletin 3.6.5:

Invalid SQL:

UPDATE session SET lastactivity = 1181161818, inforum = 0, inthread = 0, incalendar = 0, badlocation = 0 WHERE sessionhash = '3451f3d966e5aaa02a5c616364e75023';

MySQL Error : MySQL server has gone away
Error Number : 2006
Date : Wednesday, June 6th 2007 @ 03:53:16 PM
Script : http://www.domain.com/
Referrer :
IP Address : IP ADDRESS HERE
Username : Unregistered
Classname : vB_Database

I've been getting them for a while now, heres my my.cnf:

[mysqld]
safe-show-database
#old_passwords
back_log = 75
skip-innodb
max_connections = 650
key_buffer = 256M
myisam_sort_buffer_size = 64M
join_buffer_size = 1M
read_buffer_size = 1M
sort_buffer_size = 2M
table_cache = 4000
thread_cache_size = 484
wait_timeout = 1000
connect_timeout = 400
tmp_table_size = 256M
max_heap_table_size = 256M
max_allowed_packet = 64M
max_connect_errors = 20
thread_concurrency = 5
read_rnd_buffer_size = 524288
bulk_insert_buffer_size = 8M
query_cache_limit = 5M
query_cache_size = 96M
query_cache_type = 1
query_prealloc_size = 131072
query_alloc_block_size = 65536
default-storage-engine = MyISAM

[mysqld_safe]
nice = -10
open_files_limit = 8192

[mysqldump]
quick
max_allowed_packet = 16M

[myisamchk]
key_buffer = 64M
sort_buffer = 64M
read_buffer = 16M
write_buffer = 16M

[mysqlhotcopy]
interactive-timeout

anything else, please ask!

Thanks.

[Paul M]

Thread concurrancy should normally be twice the number of processors on the machine, so 5 is an odd number. Also, are you using persistant connections, if so then turn them off.

[Eikinskjaldi]

This error is caused by your wait_timout being too low. That I can tell (since I used to get a lot of them too) they have absolutely no effect on the system.

Push your wait_timout up to 18000 (15 minutes) or whatever your expiry time is, and most of them will go away.

[Nkay]

Hi guys, i get the same error when sending a mass email to all of my users, i dont think it has any effect on the sending of the emails and i believe it still sends them to all my users however this my.cnf file i think i have located in my /home directory but all this file contains is this..

[client]
user=********
pass="*************"

Should this contain more because i would also like to reolve this error keep popping up :/

[Eikinskjaldi]

Originally Posted by Nkay

Hi guys, i get the same error when sending a mass email to all of my users, i dont think it has any effect on the sending of the emails and i believe it still sends them to all my users however this my.cnf file i think i have located in my /home directory but all this file contains is this..

[client]
user=********
pass="*************"

Should this contain more because i would also like to reolve this error keep popping up :/

Yes it should contain more. What that "more" is depends on how busy your server is and what its specs are (number of CPUs, RAM, is it shared, VPS or dedicated, Linux, Windows, something else).

It would also help to see the complete error message. The one posted by the initiator of this post concerns the way vb maintains its session table.