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https://dev.mysql.com/doc/refman/5.7/en/kill.html
When you use KILL, a thread-specific kill flag is set for the thread. Thread processlist identifiers can be determined from the ID column of the INFORMATION_SCHEMA PROCESSLIST table, the Id column of SHOW PROCESSLIST output, and the PROCESSLIST_ID ... KILL [CONNECTION | QUERY] processlist_id Each connection to mysqld runs in a separate ...
https://dev.mysql.com/doc/refman/5.7/en/optimizing-innodb-logging.html
If you specify a value for innodb_log_write_ahead_size that is larger than the innodb_page_size value, the innodb_log_write_ahead_size setting is truncated to the innodb_page_size value. Setting the value too high may have a slight impact on fsync ... Consider the following guidelines for optimizing redo logging: Make your redo log files big, even as big as the buffer ...
https://dev.mysql.com/doc/refman/5.7/en/replication-gtids-restrictions.html
CREATE TEMPORARY TABLE and DROP TEMPORARY TABLE statements are not supported inside transactions, procedures, functions, and triggers when using GTIDs (that is, when the enforce_gtid_consistency system variable is set to ON). For information about ...This section provides information about restrictions on and limitations of replication with ... Because GTID-based replication is ...
https://dev.mysql.com/doc/refman/5.7/en/known-issues.html
Even if you use lower_case_table_names=2 (which enables MySQL to remember the case used for databases and table names), MySQL does not remember the case used for database names for the function DATABASE() or within the various logs (on ...For ...
https://dev.mysql.com/doc/refman/5.7/en/file-permissions.html
For example, setting UMASK=0600 is equivalent to UMASK=384 because 0600 octal is 384 decimal. If you have problems with file permissions, the UMASK or UMASK_DIR environment variable might be set incorrectly when mysqld starts. For example, mysqld ...If this is unsuitable, create the error file manually with the desired access mode prior to executing ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-summary.html
All servers therefore receive the same set of transactions in the same order, and a global total order is established for the transactions. The replication group is a set of servers that each have their own entire copy of the data (a shared-nothing ... Group Replication is a technique that can be used to implement fault-tolerant ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-acid.html
The ACID model is a set of database design principles that emphasize aspects of reliability that are important for business data and mission-critical applications. In cases where you have additional software safeguards, ultra-reliable hardware, or ...Because of the many possibilities depending on the capabilities of your CPU, network, and storage devices, this aspect is the most complicated to provide concrete guidelines ...MySQL includes components such as the InnoDB storage ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-information-schema-metrics-table.html
Module names can be used to enable, disable, or reset all counters for a particular subsystem. mysql> SET GLOBAL innodb_monitor_reset = dml_inserts; Query OK, 0 rows affected (0.00 sec) mysql> SELECT * FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE ...
https://dev.mysql.com/doc/refman/5.7/en/events-syntax.html
An event can be dropped by any user having the EVENT privilege for the database on which the event is defined. MySQL provides several SQL statements for working with scheduled events: New events are defined using the CREATE EVENT statement. The ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-turning-off.html
Oracle recommends InnoDB as the preferred storage engine for typical database applications, from single-user wikis and blogs running on a local system, to high-end applications pushing the limits of performance. In MySQL 5.7, InnoDB is the default ...The --skip-innodb option is deprecated and has no effect, and its use results in a ...