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https://dev.mysql.com/doc/refman/8.0/en/monitor-mysql-memory-use.html
mysql> SELECT * FROM performance_schema.setup_instruments WHERE NAME LIKE '%memory%'; You can narrow results by specifying a code area. mysql> SELECT * FROM sys.memory_global_by_current_bytes WHERE event_name LIKE 'memory/innodb/buf_buf_pool'\G ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-logs-cluster-log.html
(type is one of initial, system, node, initial node, or <Unknown>.) StartPhaseCompleted StartUp 4 INFO Node node_id: CM_REGCONF president = president_id, own Node = own_id, our dynamic id = dynamic_id Node president_id has been selected as ... The ...
25.7.9.1 NDB Cluster Replication: Automating Synchronization of the Replica to the Source Binary Log
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-auto-sync.html
It is possible to automate much of the process described in the previous section (see Section 25.7.9, “NDB Cluster Backups With NDB Cluster Replication”). The following Perl script reset-replica.pl serves as an example of how you can do this.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-what-is-new.html
Formerly, when the value of the lower_case_table_names system variable was set to 0, it performed case-sensitive comparisons of foreign key names as used in SELECT and other SQL statements with the names as stored. This is intended to serve as a ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-installer-change-path-proc.html
To change paths for MySQL server Identify the MySQL server to change and enable the Advanced Options link as follows: Navigate to the Select Products page by doing one of the following: If this is an initial setup of MySQL Installer, select the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-installer.html
To invoke MySQL Installer after a successful installation: Right-click Windows Start, select Run, and then click Browse. Select one of the following files: MySQLInstaller.exe to open the graphical application. If you are prompted to allow the ...
https://dev.mysql.com/doc/refman/8.0/en/no-login-pluggable-authentication.html
For example: mysql> SELECT PLUGIN_NAME, PLUGIN_STATUS FROM INFORMATION_SCHEMA.PLUGINS WHERE PLUGIN_NAME LIKE '%login%'; +----------------+---------------+ | PLUGIN_NAME | PLUGIN_STATUS | +----------------+---------------+ | mysql_no_login | ACTIVE | ... The mysql_no_login server-side authentication plugin prevents all client connections to any account that uses ...
https://dev.mysql.com/doc/refman/8.0/en/optimizer-statistics.html
The optimizer applies histogram statistics to determine row estimates based on the selectivity (filtering effect) of column value comparisons against constant values. The column_statistics data dictionary table stores histogram statistics about ...
https://dev.mysql.com/doc/refman/8.0/en/outer-join-optimization.html
MySQL implements an A LEFT JOIN B join_specification as follows: Table B is set to depend on table A and all tables on which A depends. Table A is set to depend on all tables (except B) that are used in the LEFT JOIN condition. The LEFT JOIN ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-overview.html
The user-selected rule by which the division of data is accomplished is known as a partitioning function, which in MySQL can be the modulus, simple matching against a set of ranges or value lists, an internal hashing function, or a linear hashing ...