Embedded Files
The output of InnoDB Monitor goes to stderr every 15 seconds unless configured otherwise...
If log-error is set in /etc/my.cnf (or by passing --log-error at start time) then the output will go to the file named,
If --innodb-status-file option is passed at start time then the output will go to this file instead.
In practice this usually means that the output goes to mysqld.log
under /var/log or a custom location like /mysql/data if installing from a tarballCheck
NOTE: Only works since 5.6.16. For earlier versions refer to the MySQL documentation.Check
To check whether Standard InnoDB Monitor and the InnoDB Lock Monitor is enabled...
SHOW VARIABLES LIKE '%innodb_status_output%';
Enable
NOTE: When you shutd down the server, the innodb_status_output variable is set to OFF.NOTE: The PROCESS privilege is required to enable InnoDB Monitors.NOTE: Only works since 5.6.16. For earlier versions refer to the MySQL documentation.Enable
To enable the Standard InnoDB Monitor...
SET GLOBAL innodb_status_output=ON;
To enable the InnoDB Lock Monitor...
SET GLOBAL innodb_status_output_locks=ON;
The Standard InnoDB Monitor must also be ON for this to be generated every 15 seconds. But you may wish to set it on independently for use with the On Demand output (see below).Disable
NOTE: When you shutd down the server, the innodb_status_output variable is set to OFF.NOTE: The PROCESS privilege is required to disable InnoDB Monitors.NOTE: Only works since 5.6.16. For earlier versions refer to the MySQL documentation.Disable
To disable the Standard InnoDB Monitor...
SET GLOBAL innodb_status_output=OFF;
To disable just the InnoDB Lock Monitor...
SET GLOBAL innodb_status_output_locks=OFF;
InnoDB Monitor Output On Demand
InnoDB Monitor Output On Demand
Use...
SHOW ENGINE INNODB STATUS\G
This will include InnoDB Lock Monitor data if it is enabledBibliography
Bibliography
https://dev.mysql.com/doc/refman/5.6/en/innodb-enabling-monitors.htmlhttps://dev.mysql.com/doc/refman/8.0/en/innodb-enabling-monitors.html
https://dev.mysql.com/doc/refman/5.6/en/error-log-unix.htmlhttps://dev.mysql.com/doc/refman/5.6/en/innodb-standard-monitor.html
https://www.percona.com/blog/show-innodb-status-walk-through/https://www.percona.com/blog/2006/07/17/show-innodb-status-walk-through/https://mariadb.com/kb/en/show-engine-innodb-status/https://stackoverflow.com/questions/10741718/mysql-show-innodb-status-output
https://dev.mysql.com/doc/refman/5.6/en/error-log-unix.htmlhttps://dev.mysql.com/doc/refman/5.6/en/innodb-standard-monitor.html
https://www.percona.com/blog/show-innodb-status-walk-through/https://www.percona.com/blog/2006/07/17/show-innodb-status-walk-through/https://mariadb.com/kb/en/show-engine-innodb-status/https://stackoverflow.com/questions/10741718/mysql-show-innodb-status-output
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