Search Results
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-metric-sysschema-iobythreadbylatency-category.html
Max Latency The maximum single wait time of timed IO events for the thread. Table 6.34 Sys Schema IO By Thread By Latency Metrics NameDescriptionAverage Latency The average wait time per timed IO event for the thread. Min Latency The minimum single ... Lists the Sys Schema IO By Thread By Latency metrics and provides a brief description of ...
https://dev.mysql.com/doc/refman/8.4/en/sys-wait-classes-global-by-avg-latency.html
max_latency The maximum single wait time of timed occurrences of events in the class. total_latency The total wait time of timed occurrences of events in the class. min_latency The minimum single wait time of timed occurrences of events in the class. avg_latency The average wait time per timed occurrence of events in the ...
https://dev.mysql.com/doc/refman/8.4/en/sys-wait-classes-global-by-latency.html
max_latency The maximum single wait time of timed occurrences of events in the class. total_latency The total wait time of timed occurrences of events in the class. min_latency The minimum single wait time of timed occurrences of events in the class. avg_latency The average wait time per timed occurrence of events in the ...
https://dev.mysql.com/doc/relnotes/mysql-router/8.4/en/news-8-1-0.html
client_ssl_session_cache_timeout: Defines the maximum amount of time, in seconds, a session remains in the cache. server_ssl_session_cache_timeout: Defines the maximum amount of time, in seconds, a session remains in the cache. (WL #15599) If MySQL ...If the timeout is reached, and the session is not reused, the session is removed from the cache and the connection is ... Functionality Added or Changed Bugs Fixed ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-cluster-config-metric-sourcestatus-category.html
Recovery Reconnect Interval Time in seconds between recovery reconnection attempts in group replication. Components Stop Timeout Time (in seconds) to wait for group replication components to stop during shutdown. Checkpoint Period Maximum interval ...Table 9.2 Source Status Configuration Metrics NameDescriptionSkip Errors Errors the server should ...
https://dev.mysql.com/doc/internals/en/innodb-field-start-offsets.html
The first column's length is 1, the second column's length is 2, and the third column's length is 4. The Field Start Offsets is a list in which each entry is the position, relative to the Origin, of the start of the next field. The entries are in ...
https://dev.mysql.com/doc/refman/8.4/en/gone-away.html
The most common reason for the MySQL server has gone away error is that the server timed out and closed the connection. You can check whether the MySQL server died and restarted by executing mysqladmin version and examining the server's uptime. By ...
https://dev.mysql.com/doc/internals/en/negative-tests.html
If an error does not occur, that itself indicates a problem. DO NOT FORGET "NEGATIVE" TESTS where we expect to see fine error messages from the server. Column with numeric data type: NULL, 0 Minimum - 1, Minimum, Minimum + 1 Maximum - 1, Maximum, ...
https://dev.mysql.com/doc/internals/en/transactions-historical-note.html
Second, observe that BerkeleyDB provided the concept of "nested transactions" instead of SQL standard savepoints. "Statement transaction" is a non-standard term that comes from the days when MySQL supported the BerkeleyDB storage engine. First, ...
https://dev.mysql.com/doc/internals/en/libmysql-directory.html
The files here are for producing MySQL as a library (for example, a Windows DLL). The idea is that, instead of producing separate mysql (client) and mysqld (server) programs, one produces a library. Instead of sending messages, the client part ...