Disable Error Logging
Login to your administration area and go to – System > Configuration > Developer Under the Log Settings section, be sure that Enabled is set to No Database Maintenance Tips
There are several tables used by Magento for logging. While logging is very important regarding knowing what has and is going on with your store, the logs can become large very quickly, so regularly maintenance can be of great assistance.
Here are the tables for logging:
log_customer log_visitor log_visitor_info log_url log_url_info log_quote report_viewed_product_index report_compared_product_index report_event catalog_compare_item