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https://dev.mysql.com/doc/ndbapi/en/mccj-clusterj-clusterjexception.html
User exceptions are caused by user error, for example providing a connect string that refers to an unavailable host or port. If a user exception is detected during bootstrapping (acquiring a SessionFactory), it is thrown as a fatal exception.
https://dev.mysql.com/doc/mysql-cluster-manager/8.4/en/mcm-change-log-level.html
Accepted values for log_level are the same as for the level option: one of debug, note, info, warning, error, system, or fatal. This has the same effect as using the logger level option; however, unlike the option, this command can be used at run ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-tcp-definition.html
(NDB 8.4.0) By default, when a management node fails to resolve a host name while trying to connect, this results in a fatal error. (NDB 8.4.0) If this parameter and Checksum are both enabled, perform pre-send checksum checks, and check all TCP ...
https://dev.mysql.com/doc/refman/8.4/en/monitor-innodb-mutex-waits-performance-schema.html
MAX_TIMER_WAIT The maximum wait time of the summarized timed wait events. Because waits are timed in picoseconds (trillionths of a second) by default, wait times are divided by 1000000000 to show wait times in milliseconds. A mutex is a ...The ...
https://dev.mysql.com/doc/mysql-monitor/8.0/en/replication-advisor-ref.html
However, the slave notices the network outage only after receiving no data from the master for slave_net_timeout seconds. Default frequency 06:00:00 Default auto-close enabled yes Binary Log File Count Exceeds Specified Limit The binary log captures ...By default, the server logs the length of the event as well as the event itself and uses this information to verify that the event was written ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-metric-replicationreplica-activity-category.html
Seconds Behind Source The time difference in seconds between the replica SQL thread and the replica I/O thread, based on the timestamps stored in the relay log events. Replica Error: Unknown or Incorrect Time Zone In order to use time zone names in ...Table 6.27 Replication Replica Activity Metrics NameDescriptionChange Source (Delta) The total number of CHANGE SOURCE statements ...
https://dev.mysql.com/doc/refman/8.4/en/slow-query-log.html
The slow query log consists of SQL statements that take more than long_query_time seconds to execute and require at least min_examined_row_limit rows to be examined. If the slow query log is enabled and FILE is selected as an output destination, ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-config-metric-replicationreplica-category.html
Checkpoint Period Sets the maximum time (in milliseconds) that is allowed to pass before a checkpoint operation is called to update the status of a multi-threaded replica as shown by SHOW REPLICA STATUS. Transaction Retries How many times the ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-events-statements-current-table.html
For discussion of picoseconds as the unit for event times and factors that affect time values, see Section 29.4.1, “Performance Schema Event Timing”. This value is computed in microseconds but normalized to picoseconds for easier comparison with ...For example, the events_statements_history and events_statements_history_long tables are collections of the most recent statement events that have ended, up to a maximum number of rows per thread and globally across all threads, ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-temporal-functions.html
As of MySQL 8.4.0, MySQL HeatWave supports named time zones such as MET or Europe/Amsterdam for CONVERT_TZ(). Table 5.11 Temporal Functions Name Description ADDDATE() Add time values (intervals) to a date value ADDTIME() Add time CONVERT_TZ() ...For ...