Using System Variables Variable Name Variable Type Variable Scope clone_ssl_key File name Global clone_valid_donor_list String Global collation_connection String Both collation_database String Both collation_server String Both completion_type Enumeration Both concurrent_insert Enumeration Global connect_timeout Integer Global connection_control_failed_connections_threshold Integer Global connection_control_max_connection_delay Integer Global connection_control_min_connection_delay Integer Global cte_max_recursion_depth Integer Both debug String Both debug_sync String Session default_collation_for_utf8mb4 Enumeration Both default_password_lifetime Integer Global default_storage_engine Enumeration Both default_table_encryption Boolean Both default_tmp_storage_engine Enumeration Both default_week_format Integer Both delay_key_write Enumeration Global delayed_insert_limit Integer Global delayed_insert_timeout Integer Global delayed_queue_size Integer Global div_precision_increment Integer Both dragnet.log_error_filter_rules String Global end_markers_in_json Boolean Both enforce_gtid_consistency Enumeration Global eq_range_index_dive_limit Integer Both event_scheduler Enumeration Global expire_logs_days Integer Global explicit_defaults_for_timestamp Boolean Both flush Boolean Global flush_time Integer Global foreign_key_checks Boolean Both ft_boolean_syntax String Global general_log Boolean Global general_log_file File name Global 924