Problem server gets very slow response times from import or report queries. Sometimes this causes a report execution timeouts, sometimes error messages about not being able to lock records or other database related messages in queues log file.


  1. Enabling logging of slow queries might help to trace the cause of the problem if it is database configuration problem. Enter these commands in you mysql configuration (usually /etc/my.cnf file):

    long_query_time                = 10
    slow_query_log                 = 1
    slow_query_log_file            = /var/log/mysql/log-slow-queries.log
  2. Create the file /var/log/messages.log-slow-queries.log and make sure it can be accessed by the system user running mysql - usually user mysql.
    For example:

    mkdir /var/log/mysql
    touch /var/log/mysql/log-slow-queries.log
    chown mysql:mysql /var/log/mysql/log-slow-queries.log
  3. Then restart mysql service and monitor the file.

    systemctl restart mysqld