On Mon, 11 Jun 2007, Dave Shariff Yadallee - System Administrator a.k.a. The Root of the Problem wrote:
> REcently my mysql server has been overload with a lot > of connections; in fact losing the mysql.user table and > one whole database. Define "losing". You lost access, or the tables got corrupted? > How can this be prevented? If your load is so high that the whole system is grinding to a halt, that indicates one or more of the following: 1) Your database isn't configured properly. 1.1) This may mean you have to allocate more memory to it in my.conf, but more likely, 1.2) you either have a poorly designed query somewhere in the calling code, or most likely 1.3) a missing index on a frequently used table 2) Your server isn't up to the job Have you enabled logging of slow queries in my.conf to see what queries are taking a lot of time to execute? What table type are you using? Is your data access mainly reads, mainly writes, or a combination of both? If it's both, you may benefit from using InnoDB tables instead of MyISAM, assuming this isn't what you are doing already. The first thing to find is what queries are taking up a lot of resources and making sure they are running fully indexed, and/or possibly changing the data structure to better suit the query requirements. Gordan -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
