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https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-programs-ndbmtd.html
If the is the first time this node has failed, then these files are named ndb_3_trace.log.1_t1, ndb_3_trace.log.1_t2, ndb_3_trace.log.1_t3, and ndb_3_trace.log.1_t4. However, such configurations have not been tested extensively; thus, we cannot ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-replication.html
For information about performing point-in-time recovery with NDB Cluster and NDB Cluster Replication, see Section 25.7.9.2, “Point-In-Time Recovery Using NDB Cluster Replication”. NDB Cluster supports asynchronous replication, more usually ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-configurator-workflow-server.html
Windows authentication permits you to test all of the security tokens each time you add or modify a token. Otherwise, the process stops and displays an error message if an individual action times out. MySQL Configurator performs the initial ...
https://dev.mysql.com/doc/refman/9.7/en/openid-pluggable-authentication.html
The Identity token expiration time must be greater than the current time. Note OpenID Connect pluggable authentication is an extension included in MySQL Enterprise Edition, a commercial product. MySQL Enterprise Edition supports an authentication ...
https://dev.mysql.com/doc/refman/9.7/en/optimizer-statistics.html
The table is persistent so that column statistics need not be created each time the server starts. The value is one of int, uint (unsigned integer), double, decimal, datetime, or string (includes character and binary strings). On the other hand, the ... The column_statistics data dictionary table stores histogram statistics about column values, for use by the optimizer in constructing query execution ...
https://dev.mysql.com/doc/refman/9.7/en/optimizing-innodb-many-tables.html
If you have configured non-persistent optimizer statistics (a non-default configuration), InnoDB computes index cardinality values for a table the first time that table is accessed after startup, instead of storing such values in the table. This ...
https://dev.mysql.com/doc/refman/9.7/en/optimizing-innodb-transaction-management.html
For example, an application might encounter performance issues if it commits thousands of times per second, and different performance issues if it commits only every 2-3 hours. If a big transaction is slowing down server performance, rolling it back ... To optimize InnoDB transaction processing, find the ideal balance between the performance overhead of transactional features and the workload of your ...
https://dev.mysql.com/doc/refman/9.7/en/option-tracker-component-functions.html
usedDate should be a quoted date-and-time value in ISO 8601 format, for example, "2024-10-17T20:24:41Z". While this is not a requirement, it is normally expected that this is the current UTC date and time. You can obtain this value, using UTC_DATE() ... The Option Tracker provides the functions shown in the next ...
https://dev.mysql.com/doc/refman/9.7/en/option-tracker-component-tables.html
This data uses 2 keys, listed here: usedCounter: An integer indicating the number of times the feature has been used. usedDate: A UTC date and time indicating when the feature was most recently used. This table, like other Performance Schema tables, ...
https://dev.mysql.com/doc/refman/9.7/en/order-by-optimization.html
Increase the read_rnd_buffer_size variable value so that more rows are read at a time. For example: "filesort_summary": { "rows": 100, "examined_rows": 100, "number_of_tmp_files": 0, "peak_memory_used": 25192, "sort_mode": "<sort_key, ... This ...