Name Cmd-Line Option File System Var Var Scope Dynamic character_set_database (note 1) Yes Both Yes character_set_filesystem Yes Yes Yes Both Yes character_set_results Yes Both Yes character_set_server Yes Yes Yes Both Yes character_set_system Yes Global No character_sets_dir Yes Yes Yes Global No check_proxy_users Yes Yes Yes Global Yes clone_autotune_concurrency Yes Yes Yes Global Yes clone_buffer_size Yes Yes Yes Global Yes clone_ddl_timeout Yes Yes Yes Global Yes clone_donor_timeout_after_network_failure Yes Yes Yes Global Yes clone_enable_compression Yes Yes Yes Global Yes clone_max_concurrency Yes Yes Yes Global Yes clone_max_data_bandwidth Yes Yes Yes Global Yes clone_max_network_bandwidth Yes Yes Yes Global Yes clone_ssl_ca Yes Yes Yes Global Yes clone_ssl_cert Yes Yes Yes Global Yes clone_ssl_key Yes Yes Yes Global Yes clone_valid_donor_list Yes Yes Yes Global Yes collation_connection Yes Both Yes collation_database (note 1) Yes Both Yes collation_server Yes Yes Yes Both Yes completion_type Yes Yes Yes Both Yes concurrent_insert Yes Yes Yes Global Yes connect_timeout Yes Yes Yes Global Yes connection_control_failed_connections_threshold Yes Yes Yes Global Yes connection_control_max_connection_delay Yes Yes Yes Global Yes connection_control_min_connection_delay Yes Yes Yes Global Yes core_file Yes Global No create_admin_listener_thread Yes Yes Yes Global No cte_max_recursion_depth Yes Yes Yes Both Yes daemon_memcached_enable_binlog Yes Yes Yes Global No daemon_memcached_engine_lib_name Yes Yes Yes Global No daemon_memcached_engine_lib_path Yes Yes Yes Global No daemon_memcached_option Yes Yes Yes Global No daemon_memcached_r_batch_size Yes Yes Yes Global No 693 Server System Variable Reference