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可修改参数列表（MySQL 8.0）

最近更新时间：2023.10.31 15:06:06

首次发布时间：2023.03.15 17:15:36

本文介绍云数据库 MySQL 版为数据库版本 MySQL 8.0 提供的可修改参数，以及参数的默认值、修改后是否需要重启和取值范围。

序号	参数名	参数默认值	是否需要重启	取值范围
1	auto_increment_increment	1	否	[1-65535]
2	auto_increment_offset	1	否	[1-65535]
3	automatic_sp_privileges	ON	否	[ON\|OFF]
4	avoid_temporal_upgrade	OFF	否	[ON\|OFF]
5	back_log	3000	是	[0-65535]
6	binlog_cache_size	2097152	否	[4096-16777216]
7	binlog_checksum	CRC32	是	[CRC32\|NONE]
8	binlog_order_commits	ON	否	[ON\|OFF]
9	binlog_row_image	full	否	[full\|minimal]
10	binlog_rows_query_log_events	OFF	否	[ON\|OFF]
11	binlog_stmt_cache_size	32768	否	[4096-16777216]
12	block_encryption_mode	aes-128-ecb	否	[aes-128-ecb\|aes-192-ecb\|aes-256-ecb\|aes-128-cbc\|aes-192-cbc\|aes-256-cbc]
13	bulk_insert_buffer_size	4194304	否	[0-4294967295]
14	character_set_filesystem	binary	否	[utf8\|latin1\|gbk\|binary]
15	character_set_server	utf8mb3	是	[utf8mb3\|latin1\|gbk\|gb18030\\|utf8mb4]
16	collation_server	utf8_general_ci	是	[utf8mb4_0900_ai_ci\|utf8mb4_0900_as_ci\|utf8mb4_0900_as_cs\|utf8mb4_bin\|utf8mb4_croatian_ci\|utf8mb4_cs_0900_ai_ci\|utf8mb4_cs_0900_as_cs\|utf8mb4_czech_ci\|utf8mb4_danish_ci\|utf8mb4_da_0900_ai_ci\|utf8mb4_da_0900_as_cs\|utf8mb4_de_pb_0900_ai_ci\|utf8mb4_de_pb_0900_as_cs\|utf8mb4_eo_0900_ai_ci\|utf8mb4_eo_0900_as_cs\|utf8mb4_esperanto_ci\|utf8mb4_estonian_ci\|utf8mb4_es_0900_ai_ci\|utf8mb4_es_0900_as_cs\|utf8mb4_es_trad_0900_ai_ci\|utf8mb4_es_trad_0900_as_cs\|utf8mb4_et_0900_ai_ci\|utf8mb4_et_0900_as_cs\|utf8mb4_general_ci\|utf8mb4_german2_ci\|utf8mb4_hr_0900_ai_ci\|utf8mb4_hr_0900_as_cs\|utf8mb4_hungarian_ci\|utf8mb4_hu_0900_ai_ci\|utf8mb4_hu_0900_as_cs\|utf8mb4_icelandic_ci\|utf8mb4_is_0900_ai_ci\|utf8mb4_is_0900_as_cs\|utf8mb4_ja_0900_as_cs\\|utf8mb4_ja_0900_as_cs_ks\|utf8mb4_latvian_ci\|utf8mb4_la_0900_ai_ci\|utf8mb4_la_0900_as_cs\|utf8mb4_lithuanian_ci\|utf8mb4_lt_0900_ai_ci\|utf8mb4_lt_0900_as_cs\|utf8mb4_lv_0900_ai_ci\|utf8mb4_lv_0900_as_cs\|utf8mb4_persian_ci\|utf8mb4_pl_0900_ai_ci\|utf8mb4_pl_0900_as_cs\|utf8mb4_polish_ci\|utf8mb4_romanian_ci\|utf8mb4_roman_ci\|utf8mb4_ro_0900_ai_ci\|utf8mb4_ro_0900_as_cs\|utf8mb4_ru_0900_ai_ci\|utf8mb4_ru_0900_as_cs\|utf8mb4_sinhala_ci\|utf8mb4_sk_0900_ai_ci\|utf8mb4_sk_0900_as_cs\|utf8mb4_slovak_ci\|utf8mb4_slovenian_ci\|utf8mb4_sl_0900_ai_ci\|utf8mb4_sl_0900_as_cs\|utf8mb4_spanish2_ci\|utf8mb4_spanish_ci\|utf8mb4_sv_0900_ai_ci\|utf8mb4_sv_0900_as_cs\|utf8mb4_swedish_ci\|utf8mb4_tr_0900_ai_ci\|utf8mb4_tr_0900_as_cs\|utf8mb4_turkish_ci\|utf8mb4_unicode_520_ci\|utf8mb4_unicode_ci\|utf8mb4_vietnamese_ci\|utf8mb4_vi_0900_ai_ci\|utf8mb4_vi_0900_as_cs\|utf8mb4_zh_0900_as_cs\|utf8_general_ci\|utf8_bin\|utf8_unicode_ci\|utf8_icelandic_ci\|utf8_latvian_ci\|utf8_romanian_ci\|utf8_slovenian_ci\|utf8_polish_ci\|utf8_estonian_ci\|utf8_spanish_ci\|utf8_swedish_ci\|utf8_turkish_ci\|utf8_czech_ci\|utf8_danish_ci\|utf8_lithuanian_ci\|utf8_slovak_ci\|utf8_spanish2_ci\|utf8_roman_ci\|utf8_persian_ci\|utf8_esperanto_ci\|utf8_hungarian_ci\|utf8_sinhala_ci\|latin1_bin\|latin1_danish_ci\|latin1_general_ci\|latin1_general_cs\|latin1_german1_ci\|latin1_german2_ci\|latin1_spanish_ci\|latin1_swedish_ci\|gbk_bin\|gbk_chinese_ci\|gb18030_bin\|gb18030_chinese_ci\|gb18030_unicode_520_ci]
17	concurrent_insert	AUTO	否	[NEVER\|AUTO\|ALWAYS]
18	connect_timeout	10	否	[1-3600]
19	default_storage_engine	InnoDB	是	[InnoDB\|innodb]
20	default_time_zone	+8:00	是	[SYSTEM\|-12:00\|-11:00\|-10:00\|-9:00\|-8:00\|-7:00\|-6:00\|-5:00\|-4:00\|-3:00\|-2:00\|-1:00\|+0:00\|+1:00\|+2:00\|+3:00\|+4:00\|+5:00\|+5:30\|+5:45\|+6:00\|+6:30\|+7:00\|+8:00\|+9:00\|+10:00\|+11:00\|+12:00\|+13:00]
21	default_week_format	0	否	[0-7]
22	delay_key_write	ON	否	[ON\|OFF\|ALL]
23	delayed_insert_limit	100	否	[1-4294967295]
24	delayed_insert_timeout	300	否	[1-3600]
25	delayed_queue_size	1000	否	[1-4294967295]
26	disconnect_on_expired_password	ON	是	[ON\|OFF]
27	div_precision_increment	4	否	[0-30]
28	end_markers_in_json	OFF	否	[ON\|OFF]
29	eq_range_index_dive_limit	100	否	[0-4294967295]
30	event_scheduler	OFF	否	[ON\|OFF]
31	explicit_defaults_for_timestamp	OFF	否	[ON\|OFF]
32	flush_time	0	否	[0-31536000]
33	ft_max_word_len	84	是	[10-84]
34	ft_min_word_len	4	是	[1-84]
35	ft_query_expansion_limit	20	是	[0-1000]
36	group_concat_max_len	1024	否	[4-1844674407370954752]
37	host_cache_size	644	否	[0-65535]
38	innodb_adaptive_flushing	ON	否	[ON\|OFF]
39	innodb_adaptive_flushing_lwm	10	否	[0-70]
40	innodb_adaptive_hash_index	OFF	否	[ON\|OFF]
41	innodb_adaptive_max_sleep_delay	150000	否	[1-1000000]
42	innodb_autoextend_increment	64	否	[1-1000]
43	innodb_autoinc_lock_mode	2	是	[0\|1\|2]
44	innodb_buffer_pool_dump_at_shutdown	ON	否	[ON\|OFF]
45	innodb_buffer_pool_dump_pct	25	否	[1-100]
46	innodb_buffer_pool_instances	{LEAST(DBInstanceMemory/1073741824, 8)}	是	[1-64]
47	innodb_buffer_pool_load_at_startup	ON	是	[ON\|OFF]
48	innodb_buffer_pool_size	{DBInstanceMemory*1/2}	否	[134217728-1099511627776]
49	innodb_change_buffer_max_size	25	否	[0-50]
50	innodb_change_buffering	all	否	[none\|inserts\|deletes\|changes\|purges\|all]
51	innodb_checksum_algorithm	crc32	否	[innodb\|crc32\|none\|strict_innodb\|strict_crc32\|strict_none]
52	innodb_cmp_per_index_enabled	OFF	否	[ON\|OFF]
53	innodb_commit_concurrency	0	是	[0-1000]
54	innodb_compression_failure_threshold_pct	5	否	[0-100]
55	innodb_compression_level	6	否	[0-9]
56	innodb_compression_pad_pct_max	50	否	[0-70]
57	innodb_concurrency_tickets	5000	否	[1-4294967295]
58	innodb_deadlock_detect	ON	否	[ON\|OFF]
59	innodb_disable_sort_file_cache	ON	否	[ON\|OFF]
60	innodb_flush_log_at_trx_commit	1	否	[0\|1\|2] 注意该参数值从 1 修改为 2 时，日志文件每秒都会写入到磁盘，如果写入前系统崩溃，会导致最后 1 秒的日志丢失；如果修改为 0，会有数据丢失的风险，请谨慎操作。
61	innodb_flush_method	O_DIRECT	是	[fsync\|O_DSYNC\|littlesync\|nosync\|O_DIRECT\|O_DIRECT_NO_FSYNC]
62	innodb_flush_neighbors	0	否	[0\|1\|2]
63	innodb_flush_sync	ON	否	[ON\|OFF]
64	innodb_ft_cache_size	8000000	是	[1600000-80000000]
65	innodb_ft_enable_diag_print	OFF	否	[ON\|OFF]
66	innodb_ft_enable_stopword	ON	否	[ON\|OFF]
67	innodb_ft_max_token_size	84	是	[10-84]
68	innodb_ft_min_token_size	3	是	[0-16]
69	innodb_ft_num_word_optimize	2000	否	[0-10000]
70	innodb_ft_result_cache_limit	2000000000	否	[1000000-4294967295]
71	innodb_ft_sort_pll_degree	2	是	[1-16]
72	innodb_ft_total_cache_size	640000000	是	[32000000-1600000000]
73	innodb_io_capacity	5000	否	[0-18446744073709551615]
74	innodb_io_capacity_max	6000	否	[0-18446744073709551615]
75	innodb_lock_wait_timeout	50	否	[1-1073741824]
76	innodb_log_checksums	ON	否	[ON\|OFF]
77	innodb_log_compressed_pages	OFF	否	[ON\|OFF]
78	innodb_lru_scan_depth	1024	否	[100-18446744073709551615]
79	innodb_max_dirty_pages_pct	75	否	[0-99]
80	innodb_max_dirty_pages_pct_lwm	0	否	[0-99]
81	innodb_max_purge_lag	0	否	[0-4294967295]
82	innodb_max_purge_lag_delay	0	否	[0-10000000]
83	innodb_max_undo_log_size	1073741824	否	[10485760-18446744073709551615]
84	innodb_old_blocks_pct	37	否	[5-95]
85	innodb_old_blocks_time	1000	否	[0-1024]
86	innodb_online_alter_log_max_size	134217728	否	[134217728-2147483647]
87	innodb_open_files	3000	是	[1-8192]
88	innodb_optimize_fulltext_only	OFF	否	[ON\|OFF]
89	innodb_page_cleaners	{LEAST(DBInstanceMemory/1073741824, 8)}	是	[1-64]
90	innodb_print_all_deadlocks	ON	否	[ON\|OFF]
91	innodb_purge_batch_size	300	是	[1-5000]
92	innodb_purge_rseg_truncate_frequency	128	否	[1-128]
93	innodb_purge_threads	1	是	[1-32]
94	innodb_random_read_ahead	OFF	否	[ON\|OFF]
95	innodb_read_ahead_threshold	56	否	[0-1024]
96	innodb_read_io_threads	4	是	[1-64]
97	innodb_rollback_on_timeout	OFF	是	[ON\|OFF]
98	innodb_rollback_segments	128	否	[1-128]
99	innodb_sort_buffer_size	1048576	是	[65536-67108864]
100	innodb_spin_wait_delay	6	否	[0-4294967295]
101	innodb_stats_auto_recalc	ON	否	[ON\|OFF]
102	innodb_stats_method	nulls_equal	否	[nulls_equal\|nulls_unequal\|nulls_ignored]
103	innodb_stats_on_metadata	OFF	否	[ON\|OFF]
104	innodb_stats_persistent	ON	否	[ON\|OFF]
105	innodb_stats_persistent_sample_pages	20	否	[0-4294967295]
106	innodb_stats_transient_sample_pages	8	否	[1-4294967295]
107	innodb_status_output	OFF	否	[ON\|OFF]
108	innodb_status_output_locks	OFF	否	[ON\|OFF]
109	innodb_strict_mode	OFF	否	[ON\|OFF]
110	innodb_sync_array_size	1	是	[1-1024]
111	innodb_sync_spin_loops	30	否	[0-4294967295]
112	innodb_table_locks	ON	否	[ON\|OFF]
113	innodb_thread_concurrency	0	否	[0-1000]
114	innodb_thread_sleep_delay	10000	否	[0-1000000]
115	innodb_write_io_threads	4	是	[1-64]
116	interactive_timeout	7200	否	[10-86400]
117	join_buffer_size	{LEAST(DBInstanceMemory/1048576*128, 262144)}	否	[128-4294967295]
118	key_cache_age_threshold	300	否	[100-4294967295]
119	key_cache_block_size	1024	否	[512-16384]
120	key_cache_division_limit	100	否	[1-100]
121	lc_time_names	en_US	否	[ja_JP\|pt_BR\|en_US]
122	local_infile	ON	否	[ON\|OFF]
123	lock_wait_timeout	31536000	否	[1-31536000]
124	log_error_verbosity	2	否	[1-3]
125	log_queries_not_using_indexes	OFF	否	[ON\|OFF]
126	log_slow_admin_statements	OFF	否	[ON\|OFF]
127	log_throttle_queries_not_using_indexes	0	否	[0-4294967295]
128	long_query_time	1	否	[0.1-31536000]
129	low_priority_updates	OFF	否	[ON\|OFF]
130	max_allowed_packet	1073741824	否	[16384-1073741824]
131	max_binlog_cache_size	18400000000000000000	否	[4096-18446744073709547520]
132	max_binlog_stmt_cache_size	18400000000000000000	否	[4096-18446744073709547520]
133	max_connect_errors	100	否	[0-4294967295]
134	max_error_count	64	否	[0-65535]
135	max_execution_time	0	否	[0-4294967295]
136	max_heap_table_size	67108864	否	[16384-1844674407370954752]
137	max_join_size	18446744073709551615	否	[1-18446744073709551615]
138	max_length_for_sort_data	1024	否	[4-8388608]
139	max_points_in_geometry	65536	否	[3-1048576]
140	max_prepared_stmt_count	16382	否	[0-1048576]
141	max_seeks_for_key	18400000000000000000	否	[1-18446744073709551615]
142	max_sort_length	1024	否	[4-8388608]
143	max_sp_recursion_depth	0	否	[0-255]
144	max_write_lock_count	102400	否	[1-102400]
145	min_examined_row_limit	0	否	[0-4294967295]
146	myisam_sort_buffer_size	262144	否	[262144-16777216]
147	mysql_native_password_proxy_users	OFF	否	[ON\|OFF]
148	net_buffer_length	16384	否	[1024-1048576]
149	net_read_timeout	30	否	[1-31536000]
150	net_retry_count	10	否	[1-4294967295]
151	net_write_timeout	60	否	[1-31536000]
152	ngram_token_size	2	是	[1-10]
153	open_files_limit	1048576	是	[1-18446744073709551615]
154	optimizer_prune_level	1	否	[0\|1]
155	optimizer_search_depth	62	否	[0-62]
156	optimizer_trace_limit	1	否	[0-4294967295]
157	optimizer_trace_max_mem_size	16384	否	[0-4294967295]
158	optimizer_trace_offset	-1	否	[-2147483648-2147483647]
159	preload_buffer_size	32768	否	[1024-1073741824]
160	query_alloc_block_size	8192	否	[1024-16384]
161	query_prealloc_size	8192	否	[8192-1048576]
162	range_alloc_block_size	4096	否	[4096-18446744073709551615]
163	range_optimizer_max_mem_size	8388608	是	[0-18446744073709551615]
164	read_buffer_size	{LEAST(DBInstanceMemory/1048576*128, 262144)}	否	[8200-2147479552]
165	relay_log_recovery	ON	是	[ON\|OFF]
166	session_track_gtids	OFF	否	[OFF\|OWN_GTID\|ALL_GTIDS]
167	sha256_password_proxy_users	OFF	否	[ON\|OFF]
168	show_old_temporals	OFF	否	[ON\|OFF]
169	slow_launch_time	2	否	[1-1024]
170	slow_query_log	ON	否	[ON\|OFF]
171	sort_buffer_size	262144	否	[32768-4294967295]
172	sql_mode	ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION	否	[*ALLOW_INVALID_DATES\|ANSI_QUOTES\|ERROR_FOR_DIVISION_BY_ZERO\|HIGH_NOT_PRECEDENCE\|IGNORE_SPACE\|NO_AUTO_VALUE_ON_ZERO\|NO_BACKSLASH_ESCAPES\|NO_DIR_IN_CREATE\|NO_ENGINE_SUBSTITUTION\|NO_UNSIGNED_SUBTRACTION\|NO_ZERO_DATE\|NO_ZERO_IN_DATE\|ONLY_FULL_GROUP_BY\|PAD_CHAR_TO_FULL_LENGTH\|PIPES_AS_CONCAT\|REAL_AS_FLOAT\|STRICT_ALL_TABLES\|STRICT_TRANS_TABLES\|TIME_TRUNCATE_FRACTIONAL]
173	sql_safe_updates	OFF	否	[ON\|OFF]
174	stored_program_cache	256	否	[16-524288]
175	sync_binlog	1	否	[0-4294967295] 注意该参数值从 1 修改到其他值时，会有数据丢失的风险，请谨慎操作。
176	table_definition_cache	{LEAST(DBInstanceMemory/1073741824*512, 2048)}	否	[400-524288]
177	table_open_cache	{LEAST(DBInstanceMemory/1073741824*256, 2048)}	否	[1-524288]
178	table_open_cache_instances	{LEAST(DBInstanceMemory/1073741824, 16)}	是	[1-64]
179	thread_cache_size	100	否	[0-16384]
180	thread_stack	262144	是	[131072-2147483647]
181	tls_version	TLSv1,TLSv1.1,TLSv1.2	是	[TLSv1,TLSv1.1,TLSv1.2\|TLSv1,TLSv1.1\|TLSv1.2]
182	tmp_table_size	2097152	否	[262144-134217728]
183	transaction_alloc_block_size	8192	否	[1024-131072]
184	transaction_isolation	READ-COMMITTED	否	[READ-UNCOMMITTED\|READ-COMMITTED\|REPEATABLE-READ\|SERIALIZABLE]
185	transaction_prealloc_size	4096	否	[1024-131072]
186	updatable_views_with_limit	YES	否	[YES\|NO]
187	wait_timeout	86400	否	[1-31536000]
188	max_connections	不同规格默认值不同。	否	[100-100000]
189	max_user_connections	0	否	[0\|100-100000]
190	loose_thread_pool_enabled	OFF	是	[ON\|OFF]
191	loose_thread_pool_oversubscribe	16	否	[2-128]
192	loose_thread_pool_size	2	否	[1-64]
193	loose_kill_idle_transaction	0	否	[0-31536000]
194	loose_rds_performance_schema	OFF	是	[ON\|OFF]

常见问题

如何查询云数据库 MySQL 版不支持修改的参数的设定值？

可登录数据库工作台，使用 SQL 语句 SHOW variables like '参数名'查看。

常见问题

如何查询云数据库 MySQL 版不支持修改的参数的设定值？