MySQL 9.5 Reference Manual Including MySQL NDB Cluster 9.5
The following sections describe tables that do not fall into the table categories discussed in the preceding sections:
component_scheduler_tasks: The
current status of each scheduled task.
connection_control_failed_login_attempts:
The current number of consecutive failed connection attempts
per account.
error_log: The most recent
events written to the error log.
host_cache: Information from
the internal host cache.
innodb_redo_log_files:
Information about InnoDB redo log files.
log_status: Information about
server logs for backup purposes.
mysql_option: Information about
features available in the MySQL Server.
performance_timers: Which event
timers are available.
processlist: Information about
server processes.
threads: Information about
server threads.
tls_channel_status: TLS context
properties for connection interfaces.
user_defined_functions:
Loadable functions registered by a component, plugin, or
CREATE
FUNCTION statement.