5.1.1. Server Option and Variable Reference

The following table provides a list of all the command line options, server and status variables applicable within mysqld.

The table lists command-line options (Cmd-line), options valid in configuration files (Option file), server system variables (System Var), and status variables (Status var) in one unified list, with notification of where each option/variable is valid. If a server option set on the command line or in an option file differs from the name of the corresponding server system or status variable, the variable name is noted immediately below the corresponding option. For status variables, the scope of the variable is shown (Scope) as either global, session, or both. Please see the corresponding sections for details on setting and using the options and variables. Where appropriate, a direct link to further information on the item as available.

Table 5.1. Option/Variable Summary

Name Cmd-Line Option file System Var Status Var Var Scope Dynamic
abort-slave-event-count Yes Yes
Aborted_clients Yes Global No
Aborted_connects Yes Global No
allow-suspicious-udfs Yes Yes
ansi Yes Yes
auto_increment_increment Yes Both Yes
auto_increment_offset Yes Both Yes
autocommit Yes Yes Yes Both Yes
automatic_sp_privileges Yes Global Yes
back_log Yes Global No
basedir Yes Yes Yes Global No
bind-address Yes Yes Global No
- Variable: bind_address Yes Global No
Binlog_cache_disk_use Yes Global No
binlog_cache_size Yes Yes Yes Global Yes
Binlog_cache_use Yes Global No
binlog-checksum Yes Yes
binlog_checksum Yes Global Yes
binlog_direct_non_transactional_updates Yes Yes Yes Both Yes
binlog-do-db Yes Yes
binlog-format Yes Yes Both Yes
- Variable: binlog_format Yes Both Yes
binlog-ignore-db Yes Yes
binlog_max_flush_queue_time Yes Global Yes
binlog_order_commits Yes Global Yes
binlog-row-event-max-size Yes Yes
binlog_row_image Yes Yes Yes Both Yes
binlog_rows_query_log_events Yes Both Yes
binlog-rows-query-log-events Yes Yes
- Variable: binlog_rows_query_log_events
Binlog_stmt_cache_disk_use Yes Global No
binlog_stmt_cache_size Yes Yes Yes Global Yes
Binlog_stmt_cache_use Yes Global No
bootstrap Yes Yes
bulk_insert_buffer_size Yes Yes Yes Both Yes
Bytes_received Yes Both No
Bytes_sent Yes Both No
character_set_client Yes Both Yes
character-set-client-handshake Yes Yes
character_set_connection Yes Both Yes
character_set_database[a] Yes Both Yes
character-set-filesystem Yes Yes Both Yes
- Variable: character_set_filesystem Yes Both Yes
character_set_results Yes Both Yes
character-set-server Yes Yes Both Yes
- Variable: character_set_server Yes Both Yes
character_set_system Yes Global No
character-sets-dir Yes Yes Global No
- Variable: character_sets_dir Yes Global No
chroot Yes Yes
collation_connection Yes Both Yes
collation_database[b] Yes Both Yes
collation-server Yes Yes Both Yes
- Variable: collation_server Yes Both Yes
Com_admin_commands Yes Both No
Com_alter_db Yes Both No
Com_alter_db_upgrade Yes Both No
Com_alter_event Yes Both No
Com_alter_function Yes Both No
Com_alter_procedure Yes Both No
Com_alter_server Yes Both No
Com_alter_table Yes Both No
Com_alter_tablespace Yes Both No
Com_alter_user Yes Both No
Com_analyze Yes Both No
Com_assign_to_keycache Yes Both No
Com_begin Yes Both No
Com_binlog Yes Both No
Com_call_procedure Yes Both No
Com_change_db Yes Both No
Com_change_master Yes Both No
Com_check Yes Both No
Com_checksum Yes Both No
Com_commit Yes Both No
Com_create_db Yes Both No
Com_create_event Yes Both No
Com_create_function Yes Both No
Com_create_index Yes Both No
Com_create_procedure Yes Both No
Com_create_server Yes Both No
Com_create_table Yes Both No
Com_create_trigger Yes Both No
Com_create_udf Yes Both No
Com_create_user Yes Both No
Com_create_view Yes Both No
Com_dealloc_sql Yes Both No
Com_delete Yes Both No
Com_delete_multi Yes Both No
Com_do Yes Both No
Com_drop_db Yes Both No
Com_drop_event Yes Both No
Com_drop_function Yes Both No
Com_drop_index Yes Both No
Com_drop_procedure Yes Both No
Com_drop_server Yes Both No
Com_drop_table Yes Both No
Com_drop_trigger Yes Both No
Com_drop_user Yes Both No
Com_drop_view Yes Both No
Com_empty_query Yes Both No
Com_execute_sql Yes Both No
Com_flush Yes Both No
Com_get_diagnostics Yes Both No
Com_grant Yes Both No
Com_ha_close Yes Both No
Com_ha_open Yes Both No
Com_ha_read Yes Both No
Com_help Yes Both No
Com_insert Yes Both No
Com_insert_select Yes Both No
Com_install_plugin Yes Both No
Com_kill Yes Both No
Com_load Yes Both No
Com_lock_tables Yes Both No
Com_optimize Yes Both No
Com_preload_keys Yes Both No
Com_prepare_sql Yes Both No
Com_purge Yes Both No
Com_purge_before_date Yes Both No
Com_release_savepoint Yes Both No
Com_rename_table Yes Both No
Com_rename_user Yes Both No
Com_repair Yes Both No
Com_replace Yes Both No
Com_replace_select Yes Both No
Com_reset Yes Both No
Com_resignal Yes Both No
Com_revoke Yes Both No
Com_revoke_all Yes Both No
Com_rollback Yes Both No
Com_rollback_to_savepoint Yes Both No
Com_savepoint Yes Both No
Com_select Yes Both No
Com_set_option Yes Both No
Com_show_authors Yes Both No
Com_show_binlog_events Yes Both No
Com_show_binlogs Yes Both No
Com_show_charsets Yes Both No
Com_show_collations Yes Both No
Com_show_contributors Yes Both No
Com_show_create_db Yes Both No
Com_show_create_event Yes Both No
Com_show_create_func Yes Both No
Com_show_create_proc Yes Both No
Com_show_create_table Yes Both No
Com_show_create_trigger Yes Both No
Com_show_databases Yes Both No
Com_show_engine_logs Yes Both No
Com_show_engine_mutex Yes Both No
Com_show_engine_status Yes Both No
Com_show_errors Yes Both No
Com_show_events Yes Both No
Com_show_fields Yes Both No
Com_show_function_code Yes Both No
Com_show_function_status Yes Both No
Com_show_grants Yes Both No
Com_show_keys Yes Both No
Com_show_master_status Yes Both No
Com_show_new_master Yes Both No
Com_show_open_tables Yes Both No
Com_show_plugins Yes Both No
Com_show_privileges Yes Both No
Com_show_procedure_code Yes Both No
Com_show_procedure_status Yes Both No
Com_show_processlist Yes Both No
Com_show_profile Yes Both No
Com_show_profiles Yes Both No
Com_show_relaylog_events Yes Both No
Com_show_slave_hosts Yes Both No
Com_show_slave_status Yes Both No
Com_show_status Yes Both No
Com_show_storage_engines Yes Both No
Com_show_table_status Yes Both No
Com_show_tables Yes Both No
Com_show_triggers Yes Both No
Com_show_variables Yes Both No
Com_show_warnings Yes Both No
Com_signal Yes Both No
Com_slave_start Yes Both No
Com_slave_stop Yes Both No
Com_stmt_close Yes Both No
Com_stmt_execute Yes Both No
Com_stmt_fetch Yes Both No
Com_stmt_prepare Yes Both No
Com_stmt_reprepare Yes Both No
Com_stmt_reset Yes Both No
Com_stmt_send_long_data Yes Both No
Com_truncate Yes Both No
Com_uninstall_plugin Yes Both No
Com_unlock_tables Yes Both No
Com_update Yes Both No
Com_update_multi Yes Both No
Com_xa_commit Yes Both No
Com_xa_end Yes Both No
Com_xa_prepare Yes Both No
Com_xa_recover Yes Both No
Com_xa_rollback Yes Both No
Com_xa_start Yes Both No
completion_type Yes Yes Yes Both Yes
Compression Yes Session No
concurrent_insert Yes Yes Yes Global Yes
connect_timeout Yes Yes Yes Global Yes
Connection_errors_accept Yes Global No
Connection_errors_internal Yes Global No
Connection_errors_max_connections Yes Global No
Connection_errors_peer_addr Yes Global No
Connection_errors_select Yes Global No
Connection_errors_tcpwrap Yes Global No
Connections Yes Global No
console Yes Yes
core_file Yes Global No
core-file Yes Yes
Created_tmp_disk_tables Yes Both No
Created_tmp_files Yes Global No
Created_tmp_tables Yes Both No
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
daemon_memcached_w_batch_size Yes Yes Yes Global No
datadir Yes Yes Yes Global No
date_format Yes Global No
datetime_format Yes Global No
debug Yes Yes Yes Both Yes
debug_sync Yes Session Yes
debug-sync-timeout Yes Yes
default-authentication-plugin Yes Yes
default-storage-engine Yes Yes Both Yes
- Variable: default_storage_engine Yes Both Yes
default-time-zone Yes Yes
default_tmp_storage_engine Yes Yes Yes Both Yes
default_week_format Yes Yes Yes Both Yes
defaults-extra-file Yes
defaults-file Yes
defaults-group-suffix Yes
delay-key-write Yes Yes Global Yes
- Variable: delay_key_write Yes Global Yes
Delayed_errors Yes Global No
delayed_insert_limit Yes Yes Yes Global Yes
Delayed_insert_threads Yes Global No
delayed_insert_timeout Yes Yes Yes Global Yes
delayed_queue_size Yes Yes Yes Global Yes
Delayed_writes Yes Global No
des-key-file Yes Yes
disconnect_on_expired_passwords Yes Yes Yes Session No
disconnect-slave-event-count Yes Yes
div_precision_increment Yes Yes Yes Both Yes
enable-named-pipe Yes Yes
- Variable: named_pipe
end_markers_in_json Yes Both Yes
enforce_gtid_consistency Yes Yes Yes Global No
enforce-gtid-consistency Yes Yes Yes Global No
eq_range_index_dive_limit Yes Both Yes
error_count Yes Session No
event-scheduler Yes Yes Global Yes
- Variable: event_scheduler Yes Global Yes
exit-info Yes Yes
expire_logs_days Yes Yes Yes Global Yes
explicit_defaults_for_timestamp Yes Yes Yes Session No
external-locking Yes Yes
- Variable: skip_external_locking
external_user Yes Session No
federated Yes Yes
flush Yes Yes Yes Global Yes
Flush_commands Yes Global No
flush_time Yes Yes Yes Global Yes
foreign_key_checks Yes Both Yes
ft_boolean_syntax Yes Yes Yes Global Yes
ft_max_word_len Yes Yes Yes Global No
ft_min_word_len Yes Yes Yes Global No
ft_query_expansion_limit Yes Yes Yes Global No
ft_stopword_file Yes Yes Yes Global No
gdb Yes Yes
general-log Yes Yes Global Yes
- Variable: general_log Yes Global Yes
general_log_file Yes Yes Yes Global Yes
group_concat_max_len Yes Yes Yes Both Yes
gtid_executed Yes Both No
gtid_mode Yes Global No
gtid-mode Yes Yes Global No
- Variable: gtid_mode Yes Global No
gtid_next Yes Session Yes
gtid_owned Yes Both No
gtid_purged Yes Global Yes
Handler_commit Yes Both No
Handler_delete Yes Both No
Handler_discover Yes Both No
Handler_external_lock Yes Both No
Handler_mrr_init Yes Both No
Handler_prepare Yes Both No
Handler_read_first Yes Both No
Handler_read_key Yes Both No
Handler_read_last Yes Both No
Handler_read_next Yes Both No
Handler_read_prev Yes Both No
Handler_read_rnd Yes Both No
Handler_read_rnd_next Yes Both No
Handler_rollback Yes Both No
Handler_savepoint Yes Both No
Handler_savepoint_rollback Yes Both No
Handler_update Yes Both No
Handler_write Yes Both No
have_compress Yes Global No
have_crypt Yes Global No
have_dynamic_loading Yes Global No
have_geometry Yes Global No
have_openssl Yes Global No
have_profiling Yes Global No
have_query_cache Yes Global No
have_rtree_keys Yes Global No
have_ssl Yes Global No
have_symlink Yes Global No
help Yes Yes
host_cache_size Yes Global Yes
hostname Yes Global No
identity Yes Session Yes
ignore-builtin-innodb Yes Yes Global No
- Variable: ignore_builtin_innodb Yes Global No
ignore-db-dir Yes Yes
ignore_db_dirs Yes Global No
init_connect Yes Yes Yes Global Yes
init-file Yes Yes Global No
- Variable: init_file Yes Global No
init_slave Yes Yes Yes Global Yes
innodb Yes Yes
innodb_adaptive_flushing Yes Yes Yes Global Yes
innodb_adaptive_flushing_lwm Yes Yes Yes Global Yes
innodb_adaptive_hash_index Yes Yes Yes Global Yes
innodb_adaptive_max_sleep_delay Yes Yes Yes Global Yes
innodb_additional_mem_pool_size Yes Yes Yes Global No
innodb_api_bk_commit_interval Yes Yes Yes Global Yes
innodb_api_disable_rowlock Yes Yes Yes Global No
innodb_api_enable_binlog Yes Yes Yes Global No
innodb_api_enable_mdl Yes Yes Yes Global No
innodb_api_trx_level Yes Yes Yes Global Yes
innodb_autoextend_increment Yes Yes Yes Global Yes
innodb_autoinc_lock_mode Yes Yes Yes Global No
Innodb_available_undo_logs Yes Global No
Innodb_buffer_pool_bytes_data Yes Global No
Innodb_buffer_pool_bytes_dirty Yes Global No
innodb_buffer_pool_dump_at_shutdown Yes Yes Yes Global Yes
innodb_buffer_pool_dump_now Yes Yes Yes Global Yes
Innodb_buffer_pool_dump_status Yes Global No
innodb_buffer_pool_filename Yes Yes Yes Global Yes
innodb_buffer_pool_instances Yes Yes Yes Global No
innodb_buffer_pool_load_abort Yes Yes Yes Global Yes
innodb_buffer_pool_load_at_startup Yes Yes Yes Global No
innodb_buffer_pool_load_now Yes Yes Yes Global Yes
Innodb_buffer_pool_load_status Yes Global No
Innodb_buffer_pool_pages_data Yes Global No
Innodb_buffer_pool_pages_dirty Yes Global No
Innodb_buffer_pool_pages_flushed Yes Global No
Innodb_buffer_pool_pages_free Yes Global No
Innodb_buffer_pool_pages_latched Yes Global No
Innodb_buffer_pool_pages_misc Yes Global No
Innodb_buffer_pool_pages_total Yes Global No
Innodb_buffer_pool_read_ahead Yes Global No
Innodb_buffer_pool_read_ahead_evicted Yes Global No
Innodb_buffer_pool_read_requests Yes Global No
Innodb_buffer_pool_reads Yes Global No
innodb_buffer_pool_size Yes Yes Yes Global No
Innodb_buffer_pool_wait_free Yes Global No
Innodb_buffer_pool_write_requests Yes Global No
innodb_change_buffer_max_size Yes Yes Yes Global Yes
innodb_change_buffering Yes Yes Yes Global Yes
innodb_checksum_algorithm Yes Yes Yes Global Yes
innodb_checksums Yes Yes Yes Global No
innodb_cmp_per_index_enabled Yes Yes Yes Global Yes
innodb_commit_concurrency Yes Yes Yes Global Yes
innodb_compression_failure_threshold_pct Yes Yes Yes Global Yes
innodb_compression_level Yes Yes Yes Global Yes
innodb_compression_pad_pct_max Yes Yes Yes Global Yes
innodb_concurrency_tickets Yes Yes Yes Global Yes
innodb_data_file_path Yes Yes Yes Global No
Innodb_data_fsyncs Yes Global No
innodb_data_home_dir Yes Yes Yes Global No
Innodb_data_pending_fsyncs Yes Global No
Innodb_data_pending_reads Yes Global No
Innodb_data_pending_writes Yes Global No
Innodb_data_read Yes Global No
Innodb_data_reads Yes Global No
Innodb_data_writes Yes Global No
Innodb_data_written Yes Global No
Innodb_dblwr_pages_written Yes Global No
Innodb_dblwr_writes Yes Global No
innodb_disable_sort_file_cache Yes Yes Yes Global Yes
innodb_doublewrite Yes Yes Yes Global No
innodb_fast_shutdown Yes Yes Yes Global Yes
innodb_file_format Yes Yes Yes Global Yes
innodb_file_format_check Yes Yes Yes Global No
innodb_file_format_max Yes Yes Yes Global Yes
innodb_file_per_table Yes Yes Yes Global Yes
innodb_flush_log_at_timeout Yes Global Yes
innodb_flush_log_at_trx_commit Yes Yes Yes Global Yes
innodb_flush_method Yes Yes Yes Global No
innodb_flush_neighbors Yes Yes Yes Global Yes
innodb_flushing_avg_loops Yes Yes Yes Global Yes
innodb_force_load_corrupted Yes Yes Yes Global No
innodb_force_recovery Yes Yes Yes Global No
innodb_ft_aux_table Yes Yes Yes Global Yes
innodb_ft_cache_size Yes Yes Yes Global No
innodb_ft_enable_diag_print Yes Yes Yes Global Yes
innodb_ft_enable_stopword Yes Yes Yes Global Yes
innodb_ft_max_token_size Yes Yes Yes Global No
innodb_ft_min_token_size Yes Yes Yes Global No
innodb_ft_num_word_optimize Yes Yes Yes Global Yes
innodb_ft_server_stopword_table Yes Yes Yes Global Yes
innodb_ft_sort_pll_degree Yes Yes Yes Global No
innodb_ft_user_stopword_table Yes Yes Yes Both Yes
Innodb_have_atomic_builtins Yes Global No
innodb_io_capacity Yes Yes Yes Global Yes
innodb_io_capacity_max Yes Yes Yes Global Yes
innodb_large_prefix Yes Yes Yes Global Yes
innodb_lock_wait_timeout Yes Yes Yes Both Yes
innodb_locks_unsafe_for_binlog Yes Yes Yes Global No
innodb_log_buffer_size Yes Yes Yes Global No
innodb_log_compressed_pages Yes Yes Yes Global Yes
innodb_log_file_size Yes Yes Yes Global No
innodb_log_files_in_group Yes Yes Yes Global No
innodb_log_group_home_dir Yes Yes Yes Global No
Innodb_log_waits Yes Global No
Innodb_log_write_requests Yes Global No
Innodb_log_writes Yes Global No
innodb_lru_scan_depth Yes Yes Yes Global Yes
innodb_max_dirty_pages_pct Yes Yes Yes Global Yes
innodb_max_dirty_pages_pct_lwm Yes Yes Yes Global Yes
innodb_max_purge_lag Yes Yes Yes Global Yes
innodb_max_purge_lag_delay Yes Yes Yes Global Yes
innodb_monitor_disable Yes Yes Yes Global Yes
innodb_monitor_enable Yes Yes Yes Global Yes
innodb_monitor_reset Yes Yes Yes Global Yes
innodb_monitor_reset_all Yes Yes Yes Global Yes
Innodb_num_open_files Yes Global No
innodb_old_blocks_pct Yes Yes Yes Global Yes
innodb_old_blocks_time Yes Yes Yes Global Yes
innodb_online_alter_log_max_size Yes Yes Yes Global Yes
innodb_open_files Yes Yes Yes Global No
innodb_optimize_fulltext_only Yes Yes Yes Global Yes
Innodb_os_log_fsyncs Yes Global No
Innodb_os_log_pending_fsyncs Yes Global No
Innodb_os_log_pending_writes Yes Global No
Innodb_os_log_written Yes Global No
innodb_page_size Yes Yes Yes Global No
Innodb_page_size Yes Global No
Innodb_pages_created Yes Global No
Innodb_pages_read Yes Global No
Innodb_pages_written Yes Global No
innodb_print_all_deadlocks Yes Yes Yes Global Yes
innodb_purge_batch_size Yes Yes Yes Global Yes
innodb_purge_threads Yes Yes Yes Global No
innodb_random_read_ahead Yes Yes Yes Global Yes
innodb_read_ahead_threshold Yes Yes Yes Global Yes
innodb_read_io_threads Yes Yes Yes Global No
innodb_read_only Yes Yes Yes Global No
innodb_replication_delay Yes Yes Yes Global Yes
innodb_rollback_on_timeout Yes Yes Yes Global No
innodb_rollback_segments Yes Yes Yes Global Yes
Innodb_row_lock_current_waits Yes Global No
Innodb_row_lock_time Yes Global No
Innodb_row_lock_time_avg Yes Global No
Innodb_row_lock_time_max Yes Global No
Innodb_row_lock_waits Yes Global No
Innodb_rows_deleted Yes Global No
Innodb_rows_inserted Yes Global No
Innodb_rows_read Yes Global No
Innodb_rows_updated Yes Global No
innodb_sort_buffer_size Yes Yes Yes Global No
innodb_spin_wait_delay Yes Yes Yes Global Yes
innodb_stats_auto_recalc Yes Yes Yes Global Yes
innodb_stats_method Yes Yes Yes Global Yes
innodb_stats_on_metadata Yes Yes Yes Global Yes
innodb_stats_persistent Yes Yes Yes Global Yes
innodb_stats_persistent_sample_pages Yes Yes Yes Global Yes
innodb_stats_sample_pages Yes Yes Yes Global Yes
innodb_stats_transient_sample_pages Yes Yes Yes Global Yes
innodb-status-file Yes Yes
innodb_strict_mode Yes Yes Yes Both Yes
innodb_support_xa Yes Yes Yes Both Yes
innodb_sync_array_size Yes Yes Yes Global No
innodb_sync_spin_loops Yes Yes Yes Global Yes
innodb_table_locks Yes Yes Yes Both Yes
innodb_temp_data_file_path Yes Yes Yes Global No
innodb_thread_concurrency Yes Yes Yes Global Yes
innodb_thread_sleep_delay Yes Yes Yes Global Yes
Innodb_truncated_status_writes Yes Global No
innodb_undo_directory Yes Yes Yes Global No
innodb_undo_logs Yes Yes Yes Global Yes
innodb_undo_tablespaces Yes Yes Yes Global No
innodb_use_native_aio Yes Yes Yes Global No
innodb_use_sys_malloc Yes Yes Yes Global No
innodb_version Yes Global No
innodb_write_io_threads Yes Yes Yes Global No
insert_id Yes Session Yes
install Yes
install-manual Yes
interactive_timeout Yes Yes Yes Both Yes
join_buffer_size Yes Yes Yes Both Yes
keep_files_on_create Yes Yes Yes Both Yes
Key_blocks_not_flushed Yes Global No
Key_blocks_unused Yes Global No
Key_blocks_used Yes Global No
key_buffer_size Yes Yes Yes Global Yes
key_cache_age_threshold Yes Yes Yes Global Yes
key_cache_block_size Yes Yes Yes Global Yes
key_cache_division_limit Yes Yes Yes Global Yes
Key_read_requests Yes Global No
Key_reads Yes Global No
Key_write_requests Yes Global No
Key_writes Yes Global No
language Yes Yes Yes Global No
large_files_support Yes Global No
large_page_size Yes Global No
large-pages Yes Yes Global No
- Variable: large_pages Yes Global No
last_insert_id Yes Session Yes
Last_query_cost Yes Session No
Last_query_partial_plans Yes Session No
lc-messages Yes Yes Both Yes
- Variable: lc_messages Yes Both Yes
lc-messages-dir Yes Yes Global No
- Variable: lc_messages_dir Yes Global No
lc_time_names Yes Both Yes
license Yes Global No
local_infile Yes Global Yes
lock_wait_timeout Yes Yes Yes Both Yes
locked_in_memory Yes Global No
log_bin Yes Global No
log-bin Yes Yes Yes Global No
log_bin_basename Yes Global No
log-bin-index Yes Yes
log_bin_use_v1_row_events Yes Yes Yes Global No
log-bin-use-v1-row-events Yes Yes Global No
- Variable: log_bin_use_v1_row_events Yes Global No
log-error Yes Yes Global No
- Variable: log_error Yes Global No
log-isam Yes Yes
log-output Yes Yes Global Yes
- Variable: log_output Yes Global Yes
log-queries-not-using-indexes Yes Yes Global Yes
- Variable: log_queries_not_using_indexes Yes Global Yes
log-raw Yes Yes
log-short-format Yes Yes
log-slave-updates Yes Yes Global No
- Variable: log_slave_updates Yes Global No
log_slave_updates Yes Yes Yes Global No
log_slow_admin_statements Yes Global Yes
log-slow-admin-statements Yes Yes
log_slow_slave_statements Yes Global Yes
log-slow-slave-statements Yes Yes
log-tc Yes Yes
log-tc-size Yes Yes
log_throttle_queries_not_using_indexes Yes Global Yes
log-warnings Yes Yes Global Yes
- Variable: log_warnings Yes Global Yes
long_query_time Yes Yes Yes Both Yes
low-priority-updates Yes Yes Both Yes
- Variable: low_priority_updates Yes Both Yes
lower_case_file_system Yes Yes Yes Global No
lower_case_table_names Yes Yes Yes Global No
master-info-file Yes Yes
master_info_repository Yes Global Yes
master-info-repository Yes Yes
- Variable: master_info_repository
master-retry-count Yes Yes
master_verify_checksum Yes Global Yes
master-verify-checksum Yes Yes
- Variable: master_verify_checksum
max_allowed_packet Yes Yes Yes Global Yes
max_binlog_cache_size Yes Yes Yes Global Yes
max-binlog-dump-events Yes Yes
max_binlog_size Yes Yes Yes Global Yes
max_binlog_stmt_cache_size Yes Yes Yes Global Yes
max_connect_errors Yes Yes Yes Global Yes
max_connections Yes Yes Yes Global Yes
max_delayed_threads Yes Yes Yes Both Yes
max_error_count Yes Yes Yes Both Yes
max_heap_table_size Yes Yes Yes Both Yes
max_insert_delayed_threads Yes Both Yes
max_join_size Yes Yes Yes Both Yes
max_length_for_sort_data Yes Yes Yes Both Yes
max_prepared_stmt_count Yes Yes Yes Global Yes
max_relay_log_size Yes Yes Yes Global Yes
max_seeks_for_key Yes Yes Yes Both Yes
max_sort_length Yes Yes Yes Both Yes
max_sp_recursion_depth Yes Yes Yes Both Yes
Max_used_connections Yes Global No
max_user_connections Yes Yes Yes Both Yes
max_write_lock_count Yes Yes Yes Global Yes
memlock Yes Yes Yes Global No
metadata_locks_cache_size Yes Global No
metadata_locks_hash_instances Yes Global No
min-examined-row-limit Yes Yes Yes Both Yes
myisam-block-size Yes Yes
myisam_data_pointer_size Yes Yes Yes Global Yes
myisam_max_sort_file_size Yes Yes Yes Global Yes
myisam_mmap_size Yes Yes Yes Global No
myisam-recover-options Yes Yes
- Variable: myisam_recover_options
myisam_recover_options Yes Global No
myisam_repair_threads Yes Yes Yes Both Yes
myisam_sort_buffer_size Yes Yes Yes Both Yes
myisam_stats_method Yes Yes Yes Both Yes
myisam_use_mmap Yes Yes Yes Global Yes
named_pipe Yes Global No
Ndb_conflict_fn_max Yes Global No
Ndb_conflict_fn_old Yes Global No
Ndb_number_of_data_nodes Yes Global No
net_buffer_length Yes Yes Yes Both Yes
net_read_timeout Yes Yes Yes Both Yes
net_retry_count Yes Yes Yes Both Yes
net_write_timeout Yes Yes Yes Both Yes
new Yes Yes Yes Both Yes
no-defaults Yes
Not_flushed_delayed_rows Yes Global No
old Yes Yes Yes Global No
old-alter-table Yes Yes Both Yes
- Variable: old_alter_table Yes Both Yes
old_passwords Yes Both Yes
old-style-user-limits Yes Yes
Open_files Yes Global No
open-files-limit Yes Yes Global No
- Variable: open_files_limit Yes Global No
Open_streams Yes Global No
Open_table_definitions Yes Global No
Open_tables Yes Both No
Opened_files Yes Global No
Opened_table_definitions Yes Both No
Opened_tables Yes Both No
optimizer_prune_level Yes Yes Yes Both Yes
optimizer_search_depth Yes Yes Yes Both Yes
optimizer_switch Yes Yes Yes Both Yes
optimizer_trace Yes Both Yes
optimizer_trace_features Yes Both Yes
optimizer_trace_limit Yes Both Yes
optimizer_trace_max_mem_size Yes Both Yes
optimizer_trace_offset Yes Both Yes
partition Yes Yes
- Variable: have_partitioning
performance_schema Yes Yes Yes Global No
Performance_schema_accounts_lost Yes Global No
performance_schema_accounts_size Yes Yes Yes Global No
Performance_schema_cond_classes_lost Yes Global No
Performance_schema_cond_instances_lost Yes Global No
performance_schema_digests_size Yes Yes Yes Global No
performance_schema_events_stages_history_long_size Yes Yes Yes Global No
performance_schema_events_stages_history_size Yes Yes Yes Global No
performance_schema_events_statements_history_long_size Yes Yes Yes Global No
performance_schema_events_statements_history_size Yes Yes Yes Global No
performance_schema_events_waits_history_long_size Yes Yes Yes Global No
performance_schema_events_waits_history_size Yes Yes Yes Global No
Performance_schema_file_classes_lost Yes Global No
Performance_schema_file_handles_lost Yes Global No
Performance_schema_file_instances_lost Yes Global No
Performance_schema_hosts_lost Yes Global No
performance_schema_hosts_size Yes Yes Yes Global No
performance-schema-instrument Yes Yes
Performance_schema_locker_lost Yes Global No
performance_schema_max_cond_classes Yes Yes Yes Global No
performance_schema_max_cond_instances Yes Yes Yes Global No
performance_schema_max_file_classes Yes Yes Yes Global No
performance_schema_max_file_handles Yes Yes Yes Global No
performance_schema_max_file_instances Yes Yes Yes Global No
performance_schema_max_mutex_classes Yes Yes Yes Global No
performance_schema_max_mutex_instances Yes Yes Yes Global No
performance_schema_max_rwlock_classes Yes Yes Yes Global No
performance_schema_max_rwlock_instances Yes Yes Yes Global No
performance_schema_max_socket_classes Yes Yes Yes Global No
performance_schema_max_socket_instances Yes Yes Yes Global No
performance_schema_max_stage_classes Yes Yes Yes Global No
performance_schema_max_statement_classes Yes Yes Yes Global No
performance_schema_max_table_handles Yes Yes Yes Global No
performance_schema_max_table_instances Yes Yes Yes Global No
performance_schema_max_thread_classes Yes Yes Yes Global No
performance_schema_max_thread_instances Yes Yes Yes Global No
Performance_schema_mutex_classes_lost Yes Global No
Performance_schema_mutex_instances_lost Yes Global No
Performance_schema_rwlock_classes_lost Yes Global No
Performance_schema_rwlock_instances_lost Yes Global No
Performance_schema_session_connect_attrs_lost Yes Global No
performance_schema_session_connect_attrs_size Yes Yes Yes Global No
performance_schema_setup_actors_size Yes Yes Yes Global No
performance_schema_setup_objects_size Yes Yes Yes Global No
Performance_schema_socket_classes_lost Yes Global No
Performance_schema_socket_instances_lost Yes Global No
Performance_schema_stage_classes_lost Yes Global No
Performance_schema_statement_classes_lost Yes Global No
Performance_schema_table_handles_lost Yes Global No
Performance_schema_table_instances_lost Yes Global No
Performance_schema_thread_classes_lost Yes Global No
Performance_schema_thread_instances_lost Yes Global No
Performance_schema_users_lost Yes Global No
performance_schema_users_size Yes Yes Yes Global No
pid-file Yes Yes Global No
- Variable: pid_file Yes Global No
plugin Yes Yes
plugin_dir Yes Yes Yes Global No
plugin-load Yes Yes
plugin-load-add Yes Yes
port Yes Yes Yes Global No
port-open-timeout Yes Yes
preload_buffer_size Yes Yes Yes Both Yes
Prepared_stmt_count Yes Global No
print-defaults Yes
profiling Yes Both Yes
profiling_history_size Yes Yes Yes Both Yes
protocol_version Yes Global No
proxy_user Yes Session No
pseudo_slave_mode Yes Session Yes
pseudo_thread_id Yes Session Yes
Qcache_free_blocks Yes Global No
Qcache_free_memory Yes Global No
Qcache_hits Yes Global No
Qcache_inserts Yes Global No
Qcache_lowmem_prunes Yes Global No
Qcache_not_cached Yes Global No
Qcache_queries_in_cache Yes Global No
Qcache_total_blocks Yes Global No
Queries Yes Both No
query_alloc_block_size Yes Yes Yes Both Yes
query_cache_limit Yes Yes Yes Global Yes
query_cache_min_res_unit Yes Yes Yes Global Yes
query_cache_size Yes Yes Yes Global Yes
query_cache_type Yes Yes Yes Both Yes
query_cache_wlock_invalidate Yes Yes Yes Both Yes
query_prealloc_size Yes Yes Yes Both Yes
Questions Yes Both No
rand_seed1 Yes Session Yes
rand_seed2 Yes Session Yes
range_alloc_block_size Yes Yes Yes Both Yes
read_buffer_size Yes Yes Yes Both Yes
read_only Yes Yes Yes Global Yes
read_rnd_buffer_size Yes Yes Yes Both Yes
relay-log Yes Yes Global No
- Variable: relay_log Yes Global No
relay_log_basename Yes Global No
relay-log-index Yes Yes Global No
- Variable: relay_log_index Yes Global No
relay_log_index Yes Yes Yes Global No
relay-log-info-file Yes Yes
- Variable: relay_log_info_file
relay_log_info_file Yes Yes Yes Global No
relay-log-info-repository Yes Yes
- Variable: relay_log_info_repository
relay_log_info_repository Yes Global Yes
relay_log_purge Yes Yes Yes Global Yes
relay_log_recovery Yes Yes Yes Global Yes
relay-log-recovery Yes Yes
- Variable: relay_log_recovery
relay_log_space_limit Yes Yes Yes Global No
remove Yes
replicate-do-db Yes Yes
replicate-do-table Yes Yes
replicate-ignore-db Yes Yes
replicate-ignore-table Yes Yes
replicate-rewrite-db Yes Yes
replicate-same-server-id Yes Yes
replicate-wild-do-table Yes Yes
replicate-wild-ignore-table Yes Yes
report-host Yes Yes Global No
- Variable: report_host Yes Global No
report-password Yes Yes Global No
- Variable: report_password Yes Global No
report-port Yes Yes Global No
- Variable: report_port Yes Global No
report-user Yes Yes Global No
- Variable: report_user Yes Global No
Rpl_semi_sync_master_clients Yes Global No
rpl_semi_sync_master_enabled Yes Global Yes
Rpl_semi_sync_master_net_avg_wait_time Yes Global No
Rpl_semi_sync_master_net_wait_time Yes Global No
Rpl_semi_sync_master_net_waits Yes Global No
Rpl_semi_sync_master_no_times Yes Global No
Rpl_semi_sync_master_no_tx Yes Global No
Rpl_semi_sync_master_status Yes Global No
Rpl_semi_sync_master_timefunc_failures Yes Global No
rpl_semi_sync_master_timeout Yes Global Yes
rpl_semi_sync_master_trace_level Yes Global Yes
Rpl_semi_sync_master_tx_avg_wait_time Yes Global No
Rpl_semi_sync_master_tx_wait_time Yes Global No
Rpl_semi_sync_master_tx_waits Yes Global No
rpl_semi_sync_master_wait_no_slave Yes Global Yes
Rpl_semi_sync_master_wait_pos_backtraverse Yes Global No
Rpl_semi_sync_master_wait_sessions Yes Global No
Rpl_semi_sync_master_yes_tx Yes Global No
rpl_semi_sync_slave_enabled Yes Global Yes
Rpl_semi_sync_slave_status Yes Global No
rpl_semi_sync_slave_trace_level Yes Global Yes
Rsa_public_key Yes Global No
safe-user-create Yes Yes
secure-auth Yes Yes Global Yes
- Variable: secure_auth Yes Global Yes
secure-file-priv Yes Yes Global No
- Variable: secure_file_priv Yes Global No
Select_full_join Yes Both No
Select_full_range_join Yes Both No
Select_range Yes Both No
Select_range_check Yes Both No
Select_scan Yes Both No
server-id Yes Yes Global Yes
- Variable: server_id Yes Global Yes
server_uuid Yes Global No
sha256_password_private_key_path Yes Global No
sha256_password_public_key_path Yes Global No
shared_memory Yes Global No
shared_memory_base_name Yes Global No
show-slave-auth-info Yes Yes
skip-character-set-client-handshake Yes Yes
skip-concurrent-insert Yes Yes
- Variable: concurrent_insert
skip-event-scheduler Yes Yes
skip-external-locking Yes Yes Global No
- Variable: skip_external_locking Yes Global No
skip-grant-tables Yes Yes
skip-host-cache Yes Yes
skip-log-warnings Yes
skip-name-resolve Yes Yes Global No
- Variable: skip_name_resolve Yes Global No
skip-networking Yes Yes Global No
- Variable: skip_networking Yes Global No
skip-new Yes Yes
skip-partition Yes Yes
skip-show-database Yes Yes Global No
- Variable: skip_show_database Yes Global No
skip-slave-start Yes Yes
skip-ssl Yes Yes
skip-stack-trace Yes Yes
skip-symbolic-links Yes
slave_allow_batching Yes Yes Yes Global Yes
slave_checkpoint_group Yes Yes Yes Global Yes
slave-checkpoint-group Yes Yes
- Variable: slave_checkpoint_group
slave_checkpoint_period Yes Yes Yes Global Yes
slave-checkpoint-period Yes Yes
- Variable: slave_checkpoint_period
slave_compressed_protocol Yes Yes Yes Global Yes
slave_exec_mode Yes Yes Yes Global Yes
Slave_heartbeat_period Yes Global No
Slave_last_heartbeat Yes Global No
slave-load-tmpdir Yes Yes Global No
- Variable: slave_load_tmpdir Yes Global No
slave_max_allowed_packet Yes Global Yes
slave-max-allowed-packet Yes Yes
- Variable: slave_max_allowed_packet
slave-net-timeout Yes Yes Global Yes
- Variable: slave_net_timeout Yes Global Yes
Slave_open_temp_tables Yes Global No
slave_parallel_workers Yes Global Yes
slave-parallel-workers Yes Yes
- Variable: slave_parallel_workers
slave_pending_jobs_size_max Yes Global Yes
slave-pending-jobs-size-max Yes
- Variable: slave_pending_jobs_size_max
Slave_received_heartbeats Yes Global No
Slave_retried_transactions Yes Global No
slave-rows-search-algorithms Yes Yes
- Variable: slave_rows_search_algorithms
slave_rows_search_algorithms Yes Global Yes
Slave_running Yes Global No
slave-skip-errors Yes Yes Global No
- Variable: slave_skip_errors Yes Global No
slave_sql_verify_checksum Yes Global Yes
slave-sql-verify-checksum Yes Yes
slave_transaction_retries Yes Yes Yes Global Yes
slave_type_conversions Yes Yes Yes Global No
Slow_launch_threads Yes Both No
slow_launch_time Yes Yes Yes Global Yes
Slow_queries Yes Both No
slow-query-log Yes Yes Global Yes
- Variable: slow_query_log Yes Global Yes
slow_query_log_file Yes Yes Yes Global Yes
slow-start-timeout Yes Yes
socket Yes Yes Yes Global No
sort_buffer_size Yes Yes Yes Both Yes
Sort_merge_passes Yes Both No
Sort_range Yes Both No
Sort_rows Yes Both No
Sort_scan Yes Both No
sporadic-binlog-dump-fail Yes Yes
sql_auto_is_null Yes Both Yes
sql_big_selects Yes Both Yes
sql_big_tables Yes Both Yes
sql_buffer_result Yes Both Yes
sql_log_bin Yes Both Yes
sql_log_off Yes Both Yes
sql-mode Yes Yes Both Yes
- Variable: sql_mode Yes Both Yes
sql_notes Yes Both Yes
sql_quote_show_create Yes Both Yes
sql_safe_updates Yes Both Yes
sql_select_limit Yes Both Yes
sql_slave_skip_counter Yes Global Yes
sql_warnings Yes Both Yes
ssl Yes Yes
Ssl_accept_renegotiates Yes Global No
Ssl_accepts Yes Global No
ssl-ca Yes Yes Global No
- Variable: ssl_ca Yes Global No
Ssl_callback_cache_hits Yes Global No
ssl-capath Yes Yes Global No
- Variable: ssl_capath Yes Global No
ssl-cert Yes Yes Global No
- Variable: ssl_cert Yes Global No
ssl-cipher Yes Yes Global No
- Variable: ssl_cipher Yes Global No
Ssl_cipher Yes Both No
Ssl_cipher_list Yes Both No
Ssl_client_connects Yes Global No
Ssl_connect_renegotiates Yes Global No
ssl-crl Yes Yes Global No
- Variable: ssl_crl Yes Global No
ssl-crlpath Yes Yes Global No
- Variable: ssl_crlpath Yes Global No
Ssl_ctx_verify_depth Yes Global No
Ssl_ctx_verify_mode Yes Global No
Ssl_default_timeout Yes Both No
Ssl_finished_accepts Yes Global No
Ssl_finished_connects Yes Global No
ssl-key Yes Yes Global No
- Variable: ssl_key Yes Global No
Ssl_server_not_after Yes Both No
Ssl_server_not_before Yes Both No
Ssl_session_cache_hits Yes Global No
Ssl_session_cache_misses Yes Global No
Ssl_session_cache_mode Yes Global No
Ssl_session_cache_overflows Yes Global No
Ssl_session_cache_size Yes Global No
Ssl_session_cache_timeouts Yes Global No
Ssl_sessions_reused Yes Both No
Ssl_used_session_cache_entries Yes Global No
Ssl_verify_depth Yes Both No
Ssl_verify_mode Yes Both No
ssl-verify-server-cert Yes Yes
Ssl_version Yes Both No
standalone Yes Yes
storage_engine Yes Both Yes
stored_program_cache Yes Yes Yes Global Yes
super-large-pages Yes Yes
symbolic-links Yes Yes
sync_binlog Yes Yes Yes Global Yes
sync_frm Yes Yes Yes Global Yes
sync_master_info Yes Yes Yes Global Yes
sync_relay_log Yes Yes Yes Global Yes
sync_relay_log_info Yes Yes Yes Global Yes
sysdate-is-now Yes Yes
system_time_zone Yes Global No
table_definition_cache Yes Global Yes
Table_locks_immediate Yes Global No
Table_locks_waited Yes Global No
table_open_cache Yes Global Yes
Table_open_cache_hits Yes Both No
table_open_cache_instances Yes Global No
Table_open_cache_misses Yes Both No
Table_open_cache_overflows Yes Both No
tc-heuristic-recover Yes Yes
Tc_log_max_pages_used Yes Global No
Tc_log_page_size Yes Global No
Tc_log_page_waits Yes Global No
temp-pool Yes Yes
thread_cache_size Yes Yes Yes Global Yes
thread_concurrency Yes Yes Yes Global No
thread_handling Yes Yes Yes Global No
thread_stack Yes Yes Yes Global No
Threads_cached Yes Global No
Threads_connected Yes Global No
Threads_created Yes Global No
Threads_running Yes Global No
time_format Yes Global No
time_zone Yes Both Yes
timed_mutexes Yes Yes Yes Global Yes
timestamp Yes Session Yes
tmp_table_size Yes Yes Yes Both Yes
tmpdir Yes Yes Yes Global No
transaction_alloc_block_size Yes Yes Yes Both Yes
transaction-isolation Yes Yes
- Variable: tx_isolation
transaction_prealloc_size Yes Yes Yes Both Yes
transaction-read-only Yes Yes
- Variable: tx_read_only
tx_isolation Yes Both Yes
tx_read_only Yes Both Yes
unique_checks Yes Both Yes
updatable_views_with_limit Yes Yes Yes Both Yes
Uptime Yes Global No
Uptime_since_flush_status Yes Global No
user Yes Yes
validate-password Yes Yes
validate_password_dictionary_file Yes Global No
validate_password_length Yes Global Yes
validate_password_mixed_case_count Yes Global Yes
validate_password_number_count Yes Global Yes
validate_password_policy Yes Global Yes
validate_password_special_char_count Yes Global Yes
validate_user_plugins Yes Global No
verbose Yes Yes
version Yes Global No
version_comment Yes Global No
version_compile_machine Yes Global No
version_compile_os Yes Global No
wait_timeout Yes Yes Yes Both Yes
warning_count Yes Session No

[a] This option is dynamic, but only the server should set this information. You should not set the value of this variable manually.

[b] This option is dynamic, but only the server should set this information. You should not set the value of this variable manually.





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