Hello.


See:

  http://dev.mysql.com/doc/refman/5.0/en/gone-away.html



Tripp Bishop wrote:

> Howdy all,

> 

> First off, We're running 5.0.15.

> 

> Theres a particular update statement that we run that

> updates data in several tables. On our mac OSX test

> server (also running 5.0.15) the query executes

> quickly and without any errors or warnings.

> 

> On our linux box, which is our production box, we get

> the following error as soon as the query is executed:

> 

> ERROR 2013 (HY000): Lost connection to MySQL server

> during query

> 

> The databases have a similar amount of data in them.

> 

> I've googled on the error but mostly get pages

> containing questions about the error when generated by

> stored procedures and mostly on 5.0.3. We're not using

> stored procedures. This is just a straight-up query.

> 

> Here's the query:

> 

> UPDATE customer_indicator 

> INNER JOIN customer_search_pref ON 

> customer_search_pref.customer_id =

> customer_indicator.customer_id AND 

> customer_search_pref.office_id =

> customer_indicator.office_id 

> LEFT JOIN contact_log ON 

> contact_log.customer_id =

> customer_indicator.customer_id 

> LEFT JOIN sent ON sent.pref_id =

> customer_search_pref.pref_id 

> SET customer_indicator.office_id = 33, 

>     customer_search_pref.office_id =33, 

>     customer_indicator.agent_id = 105, 

>     sent.office_id = 33, 

>     contact_log.office_id = 33, 

>     customer_indicator.next_message_id = 4403 

> WHERE customer_indicator.customer_id = 78437 AND 

>       customer_indicator.office_id = 34;

> 

> The approximate sizes of the tables involved are:

> 

> customer_indicator: 40K records

> customer_search_pref: 45K

> contact_log: 390K

> sent: 20M (million)

> 

> So my question is, what are some possible causes of

> this error? Why would trying to execute this query

> cause the connection to be lost? Why would the query

> work fine on our mac system and fail on the prodcution

> box?

> 

> Thanks,

> 

> Tripp

> 

> 

>               

> __________________________________________ 

> Yahoo! DSL – Something to write home about. 

> Just $16.99/mo. or less. 

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> 

> 



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