database error caused my host to shut down my site for the day
Hi, I got this note from my host today. Don’t know hardly anything about the guts of a database so I’m wondering where it went wrong. Fortunately I started a new active blog and this one was just up for archives. I had to take down the database (after backing it up) before they would let my site back up. Here’s the note:
I was monitoring the server that hosts your account and while reviewing the logs noticed that your website was consuming a very high percentage of the server resources (processors’ time and memory usage), thus endangered the overall performance of all the sites on the server. I’ve conducted and investigation on the reason for the high resource consumption and it turned out that your application executes slow queries towards its database, which eventually hogs the server. This happens because other processes stay in the queue waiting for the processors to execute the slow queries and free memory for them. While they are waiting however, they stack up which further increases the problem.
The reasons for the slow queries can be several:
1. Large database
2. Not well written scripts
3. Large number of internal links that query the database directly.
Unpon further checking it turned out that the following queries are slow:
TABLE_SCHEMAIN (‘*database name*’);
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