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https://dev.mysql.com/doc/refman/8.4/en/telemetry-metrics-meter-metrics.html
read_rnd_next Handler_read_rnd_next ASYNC COUNTER The number of requests to read the next row in the data file. pending_reads Innodb_data_pending_reads ASYNC GAUGE COUNTER The current number of pending reads pending_writes Innodb_data_pending_writes ... The following server metrics are registered by default: mysql.stats Metrics mysql.stats.com Metrics mysql.stats.connection Metrics mysql.perf_schema Metrics mysql.stats.handler Metrics mysql.stats.myisam Metrics mysql.stats.ssl Metrics mysql.inno Metrics mysql.inno.buffer_pool Metrics mysql.inno.data Metrics mysql.x Metrics mysql.x.stmt Metrics The maximum number of metric instruments which can be created is set by ...
https://dev.mysql.com/doc/mysql-enterprise-backup/8.4/en/backup-partial-options.html
By default, all files in the database subdirectories under the data directory of the server are included in the backup (see Table 1.1, “Types of Files in a Backup” for details). This option only applies to InnoDB tables created with the MySQL ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-desc.html
The number of bytes shown as Free extent_space is available for storing on-disk column data from the fish table only; for this reason, it is not visible when selecting from the Information Schema FILES table. In other words, 1048576 - 1044440 = 4136 ...The Version column in the output contains the table's schema object ...
https://dev.mysql.com/doc/ndbapi/en/mccj-using-clusterj-annotations.html
In ClusterJ (as in JPA), annotations are used to describe how the interface is mapped to tables in a database. The annotation @PersistenceCapable(table="employee") is used to let ClusterJ know which database table to map the Employee to (in this ...
https://dev.mysql.com/doc/workbench/en/wb-using-text-object-tool.html
However, since a text object is not a database object, there is no confirmation dialog box when you delete a text object. To add text objects to an EER Diagram, use the Text Object tool on the vertical toolbar. Make sure that the EER Diagram tab is ...
https://dev.mysql.com/doc/refman/8.4/en/crashing.html
(This is not true if you are running with the delay_key_write system variable enabled, in which case data files are written but not index files.) This means that data file contents are safe even if mysqld crashes, because the operating system ...If ...This does not mean that there are no bugs in MySQL, but if there are bugs, they should be very few and can be hard to ...
https://dev.mysql.com/doc/connectors/en/connector-j-usagenotes-statements.html
To create a Statement instance, you call the createStatement() method on the Connection object you have retrieved using one of the DriverManager.getConnection() or DataSource.getConnection() methods described earlier. To update data in the database, ... Statement objects allow you to execute basic SQL queries and retrieve the results through the ResultSet class, which is described ...
https://dev.mysql.com/doc/connector-python/en/connector-python-cext-development.html
If the C extension is not available on the system then use_pure is True. On Linux, the C and Python implementations are available as different packages. You can install one or both implementations on the same system. For Connector/Python ...
https://dev.mysql.com/doc/ndbapi/en/overview-using-transactions.html
The transaction must be closed after it has been committed (even if the commit fails), and no further operations can be added to or defined for this transaction. The procedure for using transactions is as follows: Start a transaction (instantiate ...
https://dev.mysql.com/doc/x-devapi-userguide/en/setting-the-current-schema.html
A default schema for a session can be specified using the schema attribute in the URI-like connection string or key-value pairs when opening a connection session. The Session class getDefaultSchema() method returns the default schema for the ...