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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/charset-unicode.html
The Unicode Standard includes characters from the Basic Multilingual Plane (BMP) and supplementary characters that lie outside the BMP. For information about the Unicode Standard itself, visit the Unicode Consortium website. BMP characters have ...
https://dev.mysql.com/doc/refman/8.0/en/general-thread-states.html
This state is used even if the table could not be created due to some error. Repair by sorting The repair code is using a sort to create indexes. Repair with keycache The repair code is using creating keys one by one through the key cache. The ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-hashicorp-plugin.html
C interface: In C-language code, call the keyring service functions described in Section 7.6.9.2, “The Keyring Service”. Note If you do not set the mandatory system variables at server startup, or if some other plugin initialization error ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-javascript-collections-add.html
mysql-js> db.countryinfo.add( { GNP: .6, IndepYear: 1967, Name: "Sealand", Code: "SEA", demographics: { LifeExpectancy: 79, Population: 27 }, geography: { Continent: "Europe", Region: "British Islands", SurfaceArea: 193 }, government: { ... To work ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-python-documents-add.html
mysql-py> db.countryinfo.add( { "GNP": .6, "IndepYear": 1967, "Name": "Sealand", "Code:": "SEA", "demographics": { "LifeExpectancy": 79, "Population": 27 }, "geography": { "Continent": "Europe", "Region": "British Islands", "SurfaceArea": 193 }, ...
https://dev.mysql.com/doc/refman/8.0/en/restart.html
If no monitoring process is present, RESTART fails with an error. When mysqld performs a shutdown due to use of the RESTART statement, it returns exit code 16. When the monitoring process detects an exit code of 16, it starts mysqld again. One use ...