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https://dev.mysql.com/doc/refman/9.7/en/telemetry-metrics-meters.html
For example, to update the frequency of the mysql.inno metrics: mysql>update performance_schema.setup_meters set FREQUENCY='30' where name = 'mysql.inno'; The maximum number of meter instruments which can be created is set by ...
https://dev.mysql.com/doc/refman/9.7/en/telemetry-trace-format.html
logs_enabled: Boolean details: Session Span Issued when a client session ends, recording data relevant to that session from initial connection to close of session. This span type has the following attributes: Name: Session mysql.processlist_id ...
https://dev.mysql.com/doc/refman/9.7/en/tutorial.html
mysql (sometimes referred to as the “terminal monitor” or just “monitor”) is an interactive program that enables you to connect to a MySQL server, run queries, and view the results. To see a list of options provided by mysql, invoke it with ... This chapter provides a tutorial introduction to MySQL by showing how to use the mysql client program to create and use a simple ...
https://dev.mysql.com/doc/refman/9.7/en/upgrade-binary-package.html
The MySQL server must be connected to NDB for this phase to complete. If any NDB or NDBINFO tables exist, and the server cannot connect to the cluster, it exits with an error message: Failed to Populate DD tables. This section describes how to ...
https://dev.mysql.com/doc/refman/9.7/en/using-gdb-on-mysqld.html
Some symptoms are: mysqld hangs during startup (before it writes ready for connections). It is very hard to debug MySQL under gdb if you do a lot of new connections the whole time as gdb does not free the memory for old threads. You can avoid this ... On most systems you can also start mysqld from gdb to get more information if mysqld ...
https://dev.mysql.com/doc/refman/9.7/en/windows-start-command-line.html
This command invokes the MySQL administrative utility mysqladmin to connect to the server and tell it to shut down. The command connects as the MySQL root user, which is the default administrative account in the MySQL grant system. The MySQL server ...
https://dev.mysql.com/doc/refman/9.7/en/windows-start-service.html
This command invokes the MySQL administrative utility mysqladmin to connect to the server and tell it to shut down. The command connects as the MySQL root user, which is the default administrative account in the MySQL grant system. On Windows, the ...
https://dev.mysql.com/doc/refman/9.7/en/x-plugin-system-monitoring.html
For information specifically about monitoring the effects of message compression, see Monitoring Connection Compression for X Plugin. Issue: mysql-py> \sql SELECT thread_id INTO @id FROM performance_schema.threads WHERE ... For general X Plugin ...
https://dev.mysql.com/doc/refman/9.7/en/xa.html
Among the MySQL Connectors, MySQL Connector/J 5.0.0 and higher supports XA directly, by means of a class interface that handles the XA SQL statement interface for you. A client program that connects to the MySQL server acts as the Transaction ...
https://dev.mysql.com/doc/refman/9.7/en/alter-table.html
ALTER TABLE tbl_name [alter_option [, alter_option] ...] [partition_options] alter_option: { table_options | ADD [COLUMN] col_name column_definition [FIRST | AFTER col_name] | ADD [COLUMN] (col_name column_definition,...) | ADD {INDEX | KEY} ...