Log all queries in mysql while tomcat start
Friday, September 4, 2015
Log all queries in mysql while tomcat start :-
to log all mysql queries in database while tomcat start. we have to do below steps:-
Step 1. Create log tables on mysql :-
CREATE TABLE `slow_log` (
`start_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
ON UPDATE CURRENT_TIMESTAMP,
`user_host` mediumtext NOT NULL,
`query_time` time NOT NULL,
`lock_time` time NOT NULL,
`rows_sent` int(11) NOT NULL,
`rows_examined` int(11) NOT NULL,
`db` varchar(512) NOT NULL,
`last_insert_id` int(11) NOT NULL,
`insert_id` int(11) NOT NULL,
`server_id` int(10) unsigned NOT NULL,
`sql_text` mediumtext NOT NULL,
`thread_id` bigint(21) unsigned NOT NULL
) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='Slow log'
CREATE TABLE `general_log` (
`event_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
ON UPDATE CURRENT_TIMESTAMP,
`user_host` mediumtext NOT NULL,
`thread_id` bigint(21) unsigned NOT NULL,
`server_id` int(10) unsigned NOT NULL,
`command_type` varchar(64) NOT NULL,
`argument` mediumtext NOT NULL
) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='General log'
Step 2. Enable Query logging on mysql database :-
SET global general_log = 1;
SET global log_output = 'table';
Step 3. View logs on mysql
select * from mysql.general_log
Step 4. Disable Query logging on mysql DB :-
SET global general_log = 0;
Step 5. Check Count Of Queries :-
select left(argument,5 0), count() from general_log group by left(argument,5 0) order by count() desc limit 50;
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