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https://dev.mysql.com/doc/refman/8.0/en/replication-options-binary-log.html
Startup Options Used with Binary Logging System Variables Used with Binary Logging You can use the mysqld options and system variables that are described in this section to affect the operation of the binary log as well as to control which ...For ...
https://dev.mysql.com/doc/refman/8.0/en/firewall-installation.html
(That is, do not select the Enable MySQL Enterprise Firewall check box.) Then install MySQL Enterprise Firewall afterward using the instructions for manual installation later in this section. Installation can be performed using a graphical interface ... MySQL Enterprise Firewall installation is a one-time operation that installs the elements described in Section 8.4.7.1, “Elements of MySQL Enterprise ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-undo-tablespaces.html
A minimum of three undo tablespaces satisfies this requirement while permitting an undo tablespace to be taken offline manually. In this case, if the file extension size is larger than 16MB, and the previous file extension occurred within the last ... Undo tablespaces contain undo logs, which are collections of records containing information about how to undo the latest change by a transaction to a clustered index ...
https://dev.mysql.com/doc/refman/8.0/en/audit-log-reference.html
Audit Log Functions This section describes, for each audit log function, its purpose, calling sequence, and return value. To verify installation of audit log functions, use this command: SELECT * FROM performance_schema.user_defined_functions; To ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-replication.html
In this case, an error message is issued, and you must set the channel up manually. This data permits initiating replication at a consistent position in the replication stream. When you issue START GROUP_REPLICATION on the joining member, the ...In ...
https://dev.mysql.com/doc/refman/8.0/en/error-lost-connection.html
Usually it indicates network connectivity trouble and you should check the condition of your network if this error occurs frequently. If the error message includes “during query,” this is probably the case you are experiencing. If you know that ...Sometimes the “during query” form happens when millions of rows are being sent as part of one or more ...
https://dev.mysql.com/doc/refman/8.0/en/checking-gpg-signature-windows.html
Type "Mysql Release Engineering" into the search box and press Search. When the import dialog is displayed, choose Okay, and this certificate should now be listed under the Imported Certificates tab. This requires files for both the packaged file, ... The Section 2.1.4.2, “Signature Checking Using GnuPG” section describes how to verify MySQL downloads using ...
https://dev.mysql.com/doc/refman/8.0/en/controlling-query-plan-evaluation.html
If you are unsure of what a reasonable value is for optimizer_search_depth, this variable can be set to 0 to tell the optimizer to determine the value automatically. Because the difference in performance between “good” and “bad” plans can be ... The task of the query optimizer is to find an optimal plan for executing an SQL ...
https://dev.mysql.com/doc/refman/8.0/en/create-index.html
This guideline is especially important for InnoDB tables, where the primary key determines the physical layout of rows in the data file. Take this into account when specifying a prefix length for a nonbinary string column that uses a multibyte ...
https://dev.mysql.com/doc/refman/8.0/en/delete.html
There are some exceptions to this behavior for InnoDB tables, as discussed in Section 17.6.1.6, “AUTO_INCREMENT Handling in InnoDB”. In this case, reuse of values deleted from the top of the sequence occurs even for MyISAM tables. This affects ... DELETE is a DML statement that removes rows from a ...