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https://dev.mysql.com/doc/refman/5.7/en/innodb-standard-monitor.html
The Lock Monitor is the same as the Standard Monitor except that it includes additional lock information. Enabling either monitor for periodic output turns on the same output stream, but the stream includes extra information if the Lock Monitor is ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-cluster-locks.html
This is reset to 0 when a lock is granted for a waiting request. The lock state is shown in the lock_state column; if this is W, the lock is waiting to be granted, and the waiting_for column shows the lock ID of the lock object this request is ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-server-locks.html
This is reset to 0 when a lock is granted for a waiting request. If the lock_state column's value is W, this lock is waiting to be granted, and the waiting_for column shows the lock ID of the lock object this request is waiting for. The ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-connection-tables.html
They differ in that, for grant tables, the host part of an account can be a pattern, whereas for Performance Schema tables, the host value is always a specific nonpattern host name. When a client connects to the MySQL server, it does so under a ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-rwlock-instances-table.html
Depending on how many threads are requesting a lock, and the nature of the locks requested, access can be either granted in shared mode, exclusive mode, shared-exclusive mode or not granted at all, waiting for other threads to finish first. The ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-status-variable-summary-tables.html
The meaning of “account” in these tables is similar to its meaning in the MySQL grant tables in the mysql system database, in the sense that the term refers to a combination of user and host values. They differ in that, for grant tables, the ...
https://dev.mysql.com/doc/refman/5.7/en/postinstallation.html
This section discusses tasks that you should perform after installing MySQL: If necessary, initialize the data directory and create the MySQL grant tables. Assign passwords to the initial root account in the grant tables, if that was not already ...
https://dev.mysql.com/doc/refman/5.7/en/preface.html
Oracle and/or its affiliates reserve any and all rights to this documentation not expressly granted above. This is the Reference Manual for the MySQL Database System, version 5.7, through release 5.7.44. Differences between minor versions of MySQL ...
https://dev.mysql.com/doc/refman/5.7/en/program-variables.html
Many MySQL programs have internal variables that can be set at runtime using the SET statement. See Section 13.7.4.1, “SET Syntax for Variable Assignment”, and Section 5.1.8, “Using System Variables”. Most of these program variables also ...
https://dev.mysql.com/doc/refman/5.7/en/server-status-variables.html
Table_locks_immediate The number of times that a request for a table lock could be granted immediately. Table_locks_waited The number of times that a request for a table lock could not be granted immediately and a wait was needed. The MySQL server ...