Re: vmysql: sql error[3]: MySQL server has gone away

Have a look at this link
http://dev.mysql.com/doc/refman/5.0/en/gone-away.html

you may find some help there.

Also look at this links
http://dev.mysql.com/doc/refman/5.0/en/error-log.html
and
http://dev.mysql.com/doc/refman/5.0/en/slow-query-log.html

try to enable slow-query-log. It might come up with an unknown  slow query .

when you have those errors if you log to the mysql server can you query 
anything to the db? or the server is dead?

Also take a look at this link
http://www.unix.com/web-programming-web-2-0-mashups/75618-mysql-tuning-tools-mysqltuner-pl-tuning-primer-sh.html

Come back with reports and news.

sergio rosa

On 13/05/2010 17:15, Joe Littleton wrote:
>
> I tried your config for my.cnf but I am still having the same issue.
>
> It appears that if mysql is restarted whatever authdaemon is looking 
> at is gone. It's like there is a specific PID or something and once 
> that PID is gone authdaemon believes mysql has stopped.
>
> >Hi!
>
> >I had a similar problem and it was being caused by excess tuning to 
> mysql. Now I run my mysql with this my.cnf
>
> >The issue was not with vpopmail but with web applications. A few years 
> ago I had a mysqld has gone away but it was because a small 
> max_connection value.
>
> >max_connections = 75 <-------------------- what is your number of max 
> conn?
> key_buffer = 120M
> max_allowed_packet = 24M
> table_cache = 3072
> sort_buffer_size = 2M
> read_buffer_size = 2M
> read_rnd_buffer_size = 4M
> myisam_sort_buffer_size = 64M
> thread_cache_size = 8
> query_cache_size = 128M
> query_cache_limit = 2M
> join_buffer_size = 1M
> thread_concurrency = 2
> long_query_time = 5
> log-slow-queries = /tmp/slow-queries.log
> open_files_limit = 6500
> max_heap_table_size = 64M
> query_cache_min_res_unit = 2K
> wait_timeout = 60 <------------------- Watch this value it was giving 
> my headache
> connect_timeout = 10 <------------------- Watch this value it was 
> giving my headache
> interactive_timeout = 120 <------------------- Watch this value it was 
> giving my headache
> max_connect_errors = 1000 <------------------- Watch this value it was 
> giving my headache
> expire_logs_days = 7
> low_priority_updates = 1
> max_join_size = 4294967295
>
> This is a dedicated server with 2G, so the others values my not apply 
> to your setup.
>
> Hope that helps.
> sergio rosa
>
> -- 
>
> **AWD***
> *arquitectura web e design, lda
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> mail [email protected] <mailto:[email protected]>
>
> url http://www.awd.pt
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-- 
*AWD
*arquitectura web e design, lda
rua do moinho velho, 19 2ºdto
2655-242 ericeira

tlm +351 913 489 195
mail [email protected] <mailto:[email protected]>
url http://www.awd.pt



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