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https://dev.mysql.com/doc/refman/8.4/en/innodb-troubleshooting.html
The following general guidelines apply to troubleshooting InnoDB problems: When an operation fails or you suspect a bug, look at the MySQL server error log (see Section 7.4.2, “The Error Log”). Server Error Message Reference provides ...If the ...
https://dev.mysql.com/doc/refman/8.4/en/insert-on-duplicate.html
Such statements produce a warning in the error log when using statement-based mode and are written to the binary log using the row-based format when using MIXED mode. If you specify an ON DUPLICATE KEY UPDATE clause and a row to be inserted would ...
https://dev.mysql.com/doc/refman/8.4/en/install-component.html
You can specify an invalid variable name for a component on the command line without triggering an error. The SET clause accepts only valid variable names of the component being installed and emits an error message for all invalid names. For ...[SET ...
https://dev.mysql.com/doc/refman/8.4/en/json-attribute-functions.html
An error occurs if the argument is not a valid JSON document. An error occurs if the json_doc argument is not a valid JSON document or the path argument is not a valid path expression. The functions in this section return attributes of JSON values.
https://dev.mysql.com/doc/refman/8.4/en/keyring-key-migration.html
If a key to be copied already exists in the destination keystore, an error occurs and the destination keystore is restored to its premigration state. A migration server reports errors to the console (the standard error output). If an error occurs ...
https://dev.mysql.com/doc/refman/8.4/en/linux-installation-rpm.html
A password for the superuser is set and stored in the error log file. If something goes wrong during installation, you might find debug information in the error log file /var/log/mysqld.log. See Section B.3.2.16, “File Not Found and Similar ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-logging-management-commands.html
Table 25.26 Cluster log categories, with default threshold setting Category Default threshold (All data nodes) STARTUP 7 SHUTDOWN 7 STATISTICS 7 CHECKPOINT 7 NODERESTART 7 CONNECTION 8 ERROR 15 INFO 7 BACKUP 15 CONGESTION 7 SCHEMA 7 The STATISTICS ... ndb_mgm supports a number of management commands related to the cluster log and node ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-params-other.html
The following parameters apply to the config.ini file's [tcp] section: AllowUnresolvedHostNames: When false (default), failure by management node to resolve host name results in fatal error; when true, unresolved host names are reported as warnings ... The listings in this section provide information about parameters used in the [computer], [tcp], and [shm] sections of a config.ini file for configuring NDB ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-transaction-tables.html
Configuring Transaction Event Collection Transaction Boundaries Transaction Instrumentation Transactions and Nested Events Transactions and Stored Programs Transactions and Savepoints Transactions and Errors Configuring Transaction Event Collection ...Within the event hierarchy, wait events nest within stage events, which nest within statement events, which nest within transaction ...
https://dev.mysql.com/doc/refman/8.4/en/programs-overview.html
Miscellaneous utilities: perror A utility that displays the meaning of system or MySQL error codes. Later sections provide a more detailed description of each one, with the exception of NDB Cluster programs. Each program's description indicates its ...