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https://dev.mysql.com/doc/refman/8.0/en/windows-server-first-start.html
If you omit the --console option, the server writes diagnostic output to the error log in the data directory (C:\Program Files\MySQL\MySQL Server 8.0\data by default). The error log is the file with the .err extension, and may be set using the ...
https://dev.mysql.com/doc/refman/8.0/en/windows-start-command-line.html
If mysqld doesn't start, check the error log to see whether the server wrote any messages there to indicate the cause of the problem. By default, the error log is located in the C:\Program Files\MySQL\MySQL Server 8.0\data directory. It is the file ... The MySQL server can be started manually from the command ...
https://dev.mysql.com/doc/refman/8.0/en/xa-states.html
If the current session tries to commit or roll back a given XA transaction (even one which it prepared) after another connection has already done so, the attempt is rejected with an invalid XID error (ER_XAER_NOTA) since the requested xid no longer ... An XA transaction progresses through the following states: Use XA START to start an XA transaction and put it in the ACTIVE ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-triggers.html
If an upgraded replication source server still has old replicas using MySQL versions that do not support multiple triggers, an error occurs on those replicas if a trigger is created on the source for a table that already has a trigger with the same ... With statement-based replication, triggers executed on the source also execute on the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-setup.html
For example, on Ubuntu Linux, use: sudo apt-get install libevent-dev If you installed MySQL from a source code release, libevent 1.4.12 is bundled with the package and is located at the top level of the MySQL source code directory. get BB VALUE BB ... This section describes how to set up the daemon_memcached plugin on a MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/lock-order-tool.html
Within the server, the set of lock-related objects changes with implementation of new features and code refactoring for performance improvements. If the _trace_ variable is enabled, an error is printed to the logs. If lock_order is enabled, an error ... The MySQL server is a multithreaded application that uses numerous internal locking and lock-related primitives, such as mutexes, rwlocks (including prlocks and sxlocks), conditions, and ...
https://dev.mysql.com/doc/refman/8.0/en/selinux-troubleshooting.html
$> systemctl start mysql.service Job for mysqld.service failed because the control process exited with error code. If you configure the MySQL Server to use a non-default port, such as port 3307, and do not update the policy to reflect the change, ...
https://dev.mysql.com/doc/refman/8.0/en/server-shutdown.html
If the server tries to create a shutdown thread and cannot (for example, if memory is exhausted), it issues a diagnostic message that appears in the error log: Error: Can't create thread to kill server The server stops accepting new connections. To ... The server shutdown process takes place as follows: The shutdown process is ...
https://dev.mysql.com/doc/refman/8.0/en/source-installation-prerequisites.html
On Unix-like systems, including Linux, you can check your system's version of make like this: $> make --version GNU Make 4.2.1 As of MySQL 8.0.26, MySQL 8.0 source code permits use of C++17 features. If you encounter build errors such as internal ...
https://dev.mysql.com/doc/refman/8.0/en/corrupted-myisam-tables.html
Typical symptoms of a corrupt table are: You get the following error while selecting data from the table: Incorrect key file for table: '...'. You can verify this easily by looking for a recent restarted mysqld message in the error log. Even though ...