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https://dev.mysql.com/doc/refman/8.0/en/debugging-mysql.html
This section describes debugging techniques that assist efforts to track down problems in MySQL.
https://dev.mysql.com/doc/refman/8.0/en/mysql-enterprise-telemetry.html
The MySQL telemetry component is based on the OpenTelemetry (OTel) project, an open-source, vendor-neutral observability framework providing a common observability standard. It enables users to instrument their applications in order to export ...
https://dev.mysql.com/doc/refman/8.0/en/backup-types.html
(For example, the implementation may use copy-on-write techniques so that only parts of the file system modified after the snapshot time need be copied.) MySQL itself does not provide the capability for taking file system snapshots. Full Versus ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-hashicorp-plugin.html
Note The keyring_hashicorp plugin is an extension included in MySQL Enterprise Edition, a commercial product. No key information is permanently stored in MySQL server local storage. (An optional in-memory key cache may be used as intermediate ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-information-schema-metrics-table.html
SET GLOBAL innodb_monitor_reset_all = [counter-name|module_name|pattern|all]; Counters and counter modules can also be enabled at startup using the MySQL server configuration file. For example, to enable the log module, metadata_table_handles_opened ... The INNODB_METRICS table provides information about InnoDB performance and resource-related ...
https://dev.mysql.com/doc/refman/8.0/en/version-tokens-usage.html
The next time the client sends a statement to server 2, its own token list no longer matches the server token list and an error occurs: mysql> UPDATE emp.employee SET salary = salary * 1.1 WHERE id = 4982; ERROR 3136 (42000): Version token mismatch ...A scenario in which Version Tokens can be useful is a system that accesses a collection of MySQL servers but needs to manage them for load balancing purposes by monitoring them and adjusting server assignments according to load ...
https://dev.mysql.com/doc/refman/8.0/en/windows-create-option-file.html
For options that are used every time the server starts, you may find it most convenient to use an option file to specify your MySQL configuration. This is particularly true under the following circumstances: The installation or data directory ... If ...
https://dev.mysql.com/doc/refman/8.0/en/create-table-foreign-keys.html
MySQL supports foreign keys, which permit cross-referencing related data across tables, and foreign key constraints, which help keep the related data consistent. Prior to MySQL 8.0.16, if the CONSTRAINT symbol clause was not defined, or a symbol ...
https://dev.mysql.com/doc/refman/8.0/en/keywords.html
Reserved words are permitted as identifiers if you quote them as described in Section 11.2, “Schema Object Names”: mysql> CREATE TABLE interval (begin INT, end INT); ERROR 1064 (42000): You have an error in your SQL syntax ... The ...Certain ...
https://dev.mysql.com/doc/refman/8.0/en/security-guidelines.html
Anyone using MySQL on a computer connected to the Internet should read this section to avoid the most common security mistakes. In discussing security, it is necessary to consider fully protecting the entire server host (not just the MySQL server) ...We do not cover all aspects of availability and fault tolerance ...