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https://dev.mysql.com/doc/refman/5.7/en/innodb-online-ddl-performance.html
You can use SHOW FULL PROCESSLIST to determine if transactions are waiting for a metadata lock. Online DDL improves several aspects of MySQL operation: Applications that access the table are more responsive because queries and DML operations on the ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-mysqld.html
You can see in the mysql client whether a MySQL server is connected to the cluster using SHOW PROCESSLIST. If the MySQL server is connected to the cluster, and you have the PROCESS privilege, then the first row of the output is as shown here: mysql> ...An easy way to verify that your server is running with the NDBCLUSTER storage engine enabled is to issue the SHOW ENGINES statement in the MySQL Monitor ...To be used with NDB ...
https://dev.mysql.com/doc/refman/5.7/en/replication-delayed.html
The value is identical to the State value of the SQL thread as displayed by SHOW PROCESSLIST. When the replication SQL thread is waiting for the delay to elapse before executing an event, SHOW PROCESSLIST displays its State value as Waiting until ...
https://dev.mysql.com/doc/refman/5.7/en/connection-interfaces.html
By granting the privilege to administrators and not to normal users (who should not need it), an administrator who also has the PROCESS privilege can connect to the server and use SHOW PROCESSLIST to diagnose problems even if the maximum number of ... This section describes aspects of how the MySQL server manages client ...
https://dev.mysql.com/doc/refman/5.7/en/security-against-attack.html
The output of mysqladmin processlist and SHOW PROCESSLIST shows the text of any statements currently being executed, so any user who is permitted to see the server process list might be able to see statements issued by other users such as UPDATE ...
https://dev.mysql.com/doc/refman/5.7/en/thread-information.html
row *************************** Id: 20 User: me Host: localhost:52943 db: test Command: Query Time: 0 State: starting Info: SHOW PROCESSLIST Threads can be killed with the KILL statement. To ascertain what your MySQL server is doing, it can be ...
https://dev.mysql.com/doc/refman/5.7/en/too-many-connections.html
By granting the privilege to administrators and not to normal users (who should not need it), an administrator who also has the PROCESS privilege can connect to the server and use SHOW PROCESSLIST to diagnose problems even if the maximum number of ... If clients encounter Too many connections errors when attempting to connect to the mysqld server, all available connections are in use by other ...
https://dev.mysql.com/doc/refman/5.7/en/explain-for-connection.html
connection_id is the connection identifier, as obtained from the INFORMATION_SCHEMA PROCESSLIST table or the SHOW PROCESSLIST statement. To obtain the execution plan for an explainable statement executing in a named connection, use this statement: ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-instrument-naming.html
Stages correspond to the thread states displayed by SHOW PROCESSLIST or that are visible in the Information Schema PROCESSLIST table. An instrument name consists of a sequence of elements separated by '/' characters. Example names: ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-stage-tables.html
Stages correspond to the thread states displayed by SHOW PROCESSLIST or that are visible in the Information Schema PROCESSLIST table. The Performance Schema instruments stages, which are steps during the statement-execution process, such as parsing ...