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https://dev.mysql.com/doc/refman/5.7/en/error-creating-innodb.html
Initialization Problems If something goes wrong when InnoDB attempts to initialize its tablespace or its log files, delete all files created by InnoDB: all ibdata files and all ib_logfile files. If you already created some InnoDB tables, also delete ... The troubleshooting steps for InnoDB I/O problems depend on when the problem occurs: during startup of the MySQL server, or during normal operations when a DML or DDL statement fails due to problems at the file system ...
https://dev.mysql.com/doc/refman/5.7/en/error-interfaces.html
SHOW ENGINE INNODB STATUS statement output includes information about the most recent foreign key error if a CREATE TABLE statement for an InnoDB table fails. Error messages can originate on the server side or the client side, and each error ...
https://dev.mysql.com/doc/refman/5.7/en/firewall-elements.html
Server-side plugins named MYSQL_FIREWALL_USERS and MYSQL_FIREWALL_WHITELIST implement INFORMATION_SCHEMA tables that provide views into the registered profiles. Tables in the mysql system database provide persistent backing storage of firewall data.
https://dev.mysql.com/doc/refman/5.7/en/full-text-adding-collation.html
This section describes how to add a user-defined collation for full-text searches using the built-in full-text parser. The sample collation is like latin1_swedish_ci but treats the '-' character as a letter rather than as a punctuation character so ...
https://dev.mysql.com/doc/refman/5.7/en/generated-column-index-optimizations.html
For example: CREATE TABLE t1 (f1 INT, gc INT AS (f1 + 1) STORED, INDEX (gc)); The generated column, gc, is defined as the expression f1 + 1. row *************************** id: 1 select_type: SIMPLE table: t1 partitions: NULL type: range ...The ...
https://dev.mysql.com/doc/refman/5.7/en/gis-data-formats.html
For example, a WKB value that corresponds to POINT(1 -1) consists of this sequence of 21 bytes, each represented by two hexadecimal digits: 0101000000000000000000F03F000000000000F0BF The sequence consists of the components shown in the following ...
https://dev.mysql.com/doc/refman/5.7/en/gone-away.html
If a specific query kills mysqld and the tables involved were checked with CHECK TABLE before you ran the query, can you provide a reproducible test case? See Section 5.8, “Debugging MySQL”. This section also covers the related Lost connection ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-observability.html
The entire state of the system (including the view, conflict statistics and service states) can be queried through performance_schema tables. For example, you can connect to a single server in the group and obtain both local and global information ... There is a lot of automation built into the Group Replication ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-buffer-pool-flushing.html
When table data is stored on a traditional HDD storage device, flushing neighbor pages in one operation reduces I/O overhead (primarily for disk seek operations) compared to flushing individual pages at different times. For table data stored on SSD, ... InnoDB performs certain tasks in the background, including flushing of dirty pages from the buffer ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-configuration.html
For information about optimizing database operations for InnoDB tables, see Section 8.5, “Optimizing for InnoDB Tables”. This section provides configuration information and procedures for InnoDB initialization, startup, and various components ...