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https://dev.mysql.com/doc/refman/9.7/en/error-lost-connection.html
If you know that this is happening, you should try increasing net_read_timeout from its default of 30 seconds to 60 seconds or longer, sufficient for the data transfer to complete. In this case, if your connect_timeout value is set to only a few ...
https://dev.mysql.com/doc/refman/9.7/en/events-privileges.html
This user then creates the following event: CREATE EVENT e_insert ON SCHEDULE EVERY 7 SECOND DO INSERT INTO myschema.mytable; After this event has been created, root revokes the EVENT privilege for jon@ghidora. However, e_insert continues to ... To ...
https://dev.mysql.com/doc/refman/9.7/en/firewall-component.html
firewall_component_to_plugin.sql terminates with the output shown here: Restart mysqld with the following options: --loose-mysql-firewall-database=database, --loose-mysql-firewall-mode=mode, --loose-mysql-firewall-reload-interval-seconds=seconds, ...
https://dev.mysql.com/doc/refman/9.7/en/firewall-plugin.html
The mysql_firewall_reload_interval_seconds system variable makes it possible to force memory cache reloads from tables at specified intervals. To check the status of the component, execute the following SHOW VARIABLES statement: SHOW VARIABLES LIKE ... This section contains information about the MySQL Enterprise Firewall ...
https://dev.mysql.com/doc/refman/9.7/en/grant-tables.html
The User_attributes column may contain these attributes: additional_password: The secondary password, if any. For two-factor or three-factor forms of multifactor authentication, that plugin corresponds to the first authentication factor, but ... The ...
https://dev.mysql.com/doc/refman/9.7/en/group-replication-adding-instances.html
20.2.1.6.1 Adding a Second Instance In order to add a second instance, server s2, first create the configuration file for it. 20.2.1.6.2 Adding Additional Instances Adding additional instances to the group is essentially the same sequence of steps ... At this point, the group has one member in it, server s1, which has some data in ...
https://dev.mysql.com/doc/refman/9.7/en/group-replication-frequently-asked-questions.html
The second member joining the group needs to ask the member that bootstrapped the group to dynamically change the configuration in order for it to be added to the group. Warning When the network round-trip time (RTT) between any group members is 5 ...What is the maximum number of MySQL servers in a group? A group can consist of maximum 9 ...
https://dev.mysql.com/doc/refman/9.7/en/group-replication-resource-manager-component.html
The Group Replication Resource Manager component monitors secondary server lag time and memory usage, and can expel servers which lag excessively or use too many resources from the group. Purpose: Provide monitoring of and control over secondary ...
https://dev.mysql.com/doc/refman/9.7/en/innodb-buffer-pool-flushing.html
This is a background operation performed by a page cleaner thread once per second. Also, consider adjusting innodb_lru_scan_depth when changing the number of buffer pool instances, since innodb_lru_scan_depth * innodb_buffer_pool_instances defines ... InnoDB performs certain tasks in the background, including flushing of dirty pages from the buffer ...
https://dev.mysql.com/doc/refman/9.7/en/innodb-transaction-isolation-levels.html
The second UPDATE blocks when it tries to acquire x-locks on the same records, as it also uses the index defined on column b. Transaction isolation is one of the foundations of database processing. Isolation is the I in the acronym ACID; the ...