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https://dev.mysql.com/doc/refman/5.7/en/using-system-variables.html
To restrict the maximum value to which a system variable can be set at runtime with the SET statement, specify this maximum by using an option of the form --maximum-var_name=value at server startup. For example, to prevent the value of ...The ...
https://dev.mysql.com/doc/refman/5.7/en/timestamp-initialization.html
If a TIMESTAMP or DATETIME column definition includes an explicit fractional seconds precision value anywhere, the same value must be used throughout the column definition. TIMESTAMP and DATETIME columns can be automatically initializated and ...An ...
https://dev.mysql.com/doc/refman/5.7/en/problems.html
This section lists some common problems and error messages that you may encounter. It describes how to determine the causes of the problems and what to do to solve them.
https://dev.mysql.com/doc/refman/5.7/en/comp-err.html
comp_err creates the errmsg.sys file that is used by mysqld to determine the error messages to display for different error codes. It compiles the errmsg.sys file from the text-format error information file located at sql/share/errmsg-utf8.txt in ...
https://dev.mysql.com/doc/refman/5.7/en/docker-mysql-more-topics.html
The MySQL Server's error log is then redirected to stderr, so that the error log goes into the Docker container's log and is viewable using the docker logs mysqld-container command. To make MySQL Server generate an error log when either of the two ...A MySQL Docker installation is different from a common, non-Docker installation in the following aspects: Included binaries are limited to: /usr/bin/my_print_defaults /usr/bin/mysql /usr/bin/mysql_config /usr/bin/mysql_install_db /usr/bin/mysql_tzinfo_to_sql /usr/bin/mysql_upgrade /usr/bin/mysqladmin /usr/bin/mysqlcheck /usr/bin/mysqldump /usr/bin/mysqlpump /usr/sbin/mysqld All binaries are stripped; they contain no debug ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-file-format-compatibility.html
This section describes these checks, how you can control them, and error and warning conditions that might arise. The .frm files are created and managed by MySQL, and can sometimes get out of sync with the internal metadata in InnoDB. InnoDB ...
https://dev.mysql.com/doc/refman/5.7/en/show-processlist.html
Time The time in seconds that the thread has been in its current state. For a replica SQL thread, the value is the number of seconds between the timestamp of the last replicated event and the real time of the replica host. SHOW [FULL] PROCESSLIST ...For a comparison of this statement with other sources, see Sources of Process ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-compression-usage.html
Compressed tables can be created in file-per-table tablespaces or in general tablespaces. The system tablespace (space 0, the .ibdata files) can contain user-created tables, but it also contains internal system data, which is never compressed.
https://dev.mysql.com/doc/refman/5.7/en/optimizing-innodb-diskio.html
Executables or libraries must not be placed on a direct I/O file system. (Measure at a time when the server is not doing bulk inserts; it is normal during bulk inserts for the modified pages percentage to rise significantly.) Log sequence number - ... If you follow best practices for database design and tuning techniques for SQL operations, but your database is still slow due to heavy disk I/O activity, consider these disk I/O ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-params-other.html
The following parameters apply to the config.ini file's [tcp] section: Checksum: If checksum is enabled, all signals between nodes are checked for errors. HostName2: Name or IP address of second of two computers joined by TCP connection. The ...