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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 ...
https://dev.mysql.com/doc/refman/8.0/en/create-function-loadable.html
IF NOT EXISTS prevents an error from occurring if there already exists a loadable function with the same name. It does not prevent an error from occurring if there already exists a built-in function having the same name. shared_library_name is the ... CREATE [AGGREGATE] FUNCTION [IF NOT EXISTS] function_name RETURNS {STRING|INTEGER|REAL|DECIMAL} SONAME shared_library_name This statement loads the loadable function named ...
https://dev.mysql.com/doc/refman/8.0/en/encrypted-connection-protocols-ciphers.html
If a client attempts to connect using these protocols, for TCP connections, the connection fails, and an error is returned to the client. In the releases where the TLSv1 and TLSv1.1 connection protocols are deprecated (MySQL 8.0.26 and MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/features.html
Localization The server can provide error messages to clients in many languages. Full support for several different character sets, including latin1 (cp1252), german, big5, ujis, several Unicode character sets, and more. To see an example of very ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-deadlocks-handling.html
It explains how to organize database operations to minimize deadlocks and the subsequent error handling required in applications. Information about each deadlock, not just the latest one, is recorded in the MySQL error log. This section builds on ...