https://dev.mysql.com/locking-functions.html
If so, it returns the connection identifier of the client session that holds the lock. While held by one session, other sessions cannot obtain a lock of the same name. Returns 1 if the lock was obtained successfully, 0 if the attempt timed out (for ...
https://dev.mysql.com/memory-summary-tables.html
In addition, each memory summary table that is aggregated by account, host, user, or thread is implicitly truncated by truncation of the connection table on which it depends, or truncation of memory_summary_global_by_event_name. Operation counts ...
https://dev.mysql.com/mysql-client-find-plugin.html
The plugin API does not require a connection to a MySQL server, but this structure must be properly initialized. struct st_mysql_client_plugin *mysql_client_find_plugin(MYSQL *mysql, const char *name, int type) Returns a pointer to a loaded plugin, ...
https://dev.mysql.com/mysql-client-register-plugin.html
The plugin API does not require a connection to a MySQL server, but this structure must be properly initialized. struct st_mysql_client_plugin *mysql_client_register_plugin(MYSQL *mysql, struct st_mysql_client_plugin *plugin) Adds a plugin ...
https://dev.mysql.com/mysql-close.html
mysql_close() also deallocates the connection handler pointed to by mysql if the handler was allocated automatically by mysql_init() or mysql_connect().
https://dev.mysql.com/mysql-cluster-install-first-start.html
Note The IP address shown for a given NDB Cluster SQL or other API node in the output of SHOW is the address used by the SQL or API node to connect to the cluster data nodes, and not to any management node. Starting the cluster is not very ...
https://dev.mysql.com/mysql-cluster-logging-management-commands.html
Table 22.279 Cluster log categories, with default threshold setting Category Default threshold (All data nodes) STARTUP 7 SHUTDOWN 7 STATISTICS 7 CHECKPOINT 7 NODERESTART 7 CONNECTION 7 ERROR 15 INFO 7 The STATISTICS category can provide a great ...
https://dev.mysql.com/mysql-cluster-ndbinfo-arbitrator-validity-detail.html
arb_connected shows whether the current node is connected to the arbitrator. The arbitrator_validity_detail table shows the view that each data node in the cluster has of the arbitrator. The following table provides information about the columns in ...
https://dev.mysql.com/mysql-cluster-ndbinfo-config-nodes.html
This table does not indicate whether a given node is actually running, or whether it is currently connected to the cluster. Information about nodes connected to an NDB Cluster can be obtained from the nodes and processes table. The config_nodes ...
https://dev.mysql.com/mysql-cluster-ndbinfo-server-locks.html
The server_locks table is similar in structure to the cluster_locks table, and provides a subset of the information found in the latter table, but which is specific to the SQL node (MySQL server) where it resides. (The cluster_locks table provides ...
