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【MySQL】查看MySQL Server参数方法

原创 Linux操作系统 作者:secooler 时间:2009-06-08 10:51:53 0 删除 编辑
1.启动windows系统中的MySQL数据库
C:\>net start mysql
The MySQL service is starting.
The MySQL service was started successfully.

2.进入到MySQL命令行界面
C:\>mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.0.77-community-nt MySQL Community Edition (GPL)

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql>

3.查看服务器参数命令演示
mysql> show variables;
+---------------------------------+----------------------------------------------------------------+
| Variable_name                   | Value                                                          |
+---------------------------------+----------------------------------------------------------------+
| auto_increment_increment        | 1                                                              |
| auto_increment_offset           | 1                                                              |
| automatic_sp_privileges         | ON                                                             |
| back_log                        | 50                                                             |
| basedir                         | C:\Program Files\MySQL\MySQL Server 5.0\                       |
| binlog_cache_size               | 32768                                                          |
| bulk_insert_buffer_size         | 8388608                                                        |
| character_set_client            | utf8                                                           |
| character_set_connection        | utf8                                                           |
| character_set_database          | utf8                                                           |
| character_set_filesystem        | binary                                                         |
| character_set_results           | utf8                                                           |
| character_set_server            | utf8                                                           |
| character_set_system            | utf8                                                           |
| character_sets_dir              | C:\Program Files\MySQL\MySQL Server 5.0\share\charsets\        |
| collation_connection            | utf8_general_ci                                                |
| collation_database              | utf8_general_ci                                                |
| collation_server                | utf8_general_ci                                                |
| completion_type                 | 0                                                              |
| concurrent_insert               | 1                                                              |
| connect_timeout                 | 10                                                             |
| datadir                         | C:\Program Files\MySQL\MySQL Server 5.0\Data\                  |
| date_format                     | %Y-%m-%d                                                       |
| datetime_format                 | %Y-%m-%d %H:%i:%s                                              |
| default_week_format             | 0                                                              |
| delay_key_write                 | ON                                                             |
| delayed_insert_limit            | 100                                                            |
| delayed_insert_timeout          | 300                                                            |
| delayed_queue_size              | 1000                                                           |
| div_precision_increment         | 4                                                              |
| keep_files_on_create            | OFF                                                            |
| engine_condition_pushdown       | OFF                                                            |
| expire_logs_days                | 0                                                              |
| flush                           | OFF                                                            |
| flush_time                      | 1800                                                           |
| ft_boolean_syntax               | + -><()~*:""&|                                                 |
| ft_max_word_len                 | 84                                                             |
| ft_min_word_len                 | 4                                                              |
| ft_query_expansion_limit        | 20                                                             |
| ft_stopword_file                | (built-in)                                                     |
| group_concat_max_len            | 1024                                                           |
| have_archive                    | YES                                                            |
| have_bdb                        | NO                                                             |
| have_blackhole_engine           | YES                                                            |
| have_compress                   | YES                                                            |
| have_crypt                      | NO                                                             |
| have_csv                        | NO                                                             |
| have_dynamic_loading            | YES                                                            |
| have_example_engine             | NO                                                             |
| have_federated_engine           | YES                                                            |
| have_geometry                   | YES                                                            |
| have_innodb                     | YES                                                            |
| have_isam                       | NO                                                             |
| have_merge_engine               | YES                                                            |
| have_ndbcluster                 | NO                                                             |
| have_openssl                    | DISABLED                                                       |
| have_ssl                        | DISABLED                                                       |
| have_query_cache                | YES                                                            |
| have_raid                       | NO                                                             |
| have_rtree_keys                 | YES                                                            |
| have_symlink                    | YES                                                            |
| hostname                        | houswlt                                                        |
| init_connect                    |                                                                |
| init_file                       |                                                                |
| init_slave                      |                                                                |
| innodb_additional_mem_pool_size | 2097152                                                        |
| innodb_autoextend_increment     | 8                                                              |
| innodb_buffer_pool_awe_mem_mb   | 0                                                              |
| innodb_buffer_pool_size         | 49283072                                                       |
| innodb_checksums                | ON                                                             |
| innodb_commit_concurrency       | 0                                                              |
| innodb_concurrency_tickets      | 500                                                            |
| innodb_data_file_path           | ibdata1:10M:autoextend                                         |
| innodb_data_home_dir            |                                                                |
| innodb_adaptive_hash_index      | ON                                                             |
| innodb_doublewrite              | ON                                                             |
| innodb_fast_shutdown            | 1                                                              |
| innodb_file_io_threads          | 4                                                              |
| innodb_file_per_table           | OFF                                                            |
| innodb_flush_log_at_trx_commit  | 1                                                              |
| innodb_flush_method             |                                                                |
| innodb_force_recovery           | 0                                                              |
| innodb_lock_wait_timeout        | 50                                                             |
| innodb_locks_unsafe_for_binlog  | OFF                                                            |
| innodb_log_arch_dir             |                                                                |
| innodb_log_archive              | OFF                                                            |
| innodb_log_buffer_size          | 1048576                                                        |
| innodb_log_file_size            | 25165824                                                       |
| innodb_log_files_in_group       | 2                                                              |
| innodb_log_group_home_dir       | .\                                                             |
| innodb_max_dirty_pages_pct      | 90                                                             |
| innodb_max_purge_lag            | 0                                                              |
| innodb_mirrored_log_groups      | 1                                                              |
| innodb_open_files               | 300                                                            |
| innodb_rollback_on_timeout      | OFF                                                            |
| innodb_support_xa               | ON                                                             |
| innodb_sync_spin_loops          | 20                                                             |
| innodb_table_locks              | ON                                                             |
| innodb_thread_concurrency       | 8                                                              |
| innodb_thread_sleep_delay       | 10000                                                          |
| interactive_timeout             | 28800                                                          |
| join_buffer_size                | 131072                                                         |
| key_buffer_size                 | 26214400                                                       |
| key_cache_age_threshold         | 300                                                            |
| key_cache_block_size            | 1024                                                           |
| key_cache_division_limit        | 100                                                            |
| language                        | C:\Program Files\MySQL\MySQL Server 5.0\share\english\         |
| large_files_support             | ON                                                             |
| large_page_size                 | 0                                                              |
| large_pages                     | OFF                                                            |
| lc_time_names                   | en_US                                                          |
| license                         | GPL                                                            |
| local_infile                    | ON                                                             |
| log                             | OFF                                                            |
| log_bin                         | OFF                                                            |
| log_bin_trust_function_creators | OFF                                                            |
| log_error                       | C:\Program Files\MySQL\MySQL Server 5.0\Data\houswlt.err       |
| log_queries_not_using_indexes   | OFF                                                            |
| log_slave_updates               | OFF                                                            |
| log_slow_queries                | OFF                                                            |
| log_warnings                    | 1                                                              |
| long_query_time                 | 10                                                             |
| low_priority_updates            | OFF                                                            |
| lower_case_file_system          | ON                                                             |
| lower_case_table_names          | 1                                                              |
| max_allowed_packet              | 1048576                                                        |
| max_binlog_cache_size           | 4294963200                                                     |
| max_binlog_size                 | 1073741824                                                     |
| max_connect_errors              | 10                                                             |
| max_connections                 | 100                                                            |
| max_delayed_threads             | 20                                                             |
| max_error_count                 | 64                                                             |
| max_heap_table_size             | 16777216                                                       |
| max_insert_delayed_threads      | 20                                                             |
| max_join_size                   | 18446744073709551615                                           |
| max_length_for_sort_data        | 1024                                                           |
| max_prepared_stmt_count         | 16382                                                          |
| max_relay_log_size              | 0                                                              |
| max_seeks_for_key               | 4294967295                                                     |
| max_sort_length                 | 1024                                                           |
| max_sp_recursion_depth          | 0                                                              |
| max_tmp_tables                  | 32                                                             |
| max_user_connections            | 0                                                              |
| max_write_lock_count            | 4294967295                                                     |
| multi_range_count               | 256                                                            |
| myisam_data_pointer_size        | 6                                                              |
| myisam_max_sort_file_size       | 107374182400                                                   |
| myisam_recover_options          | OFF                                                            |
| myisam_repair_threads           | 1                                                              |
| myisam_sort_buffer_size         | 36700160                                                       |
| myisam_stats_method             | nulls_unequal                                                  |
| named_pipe                      | OFF                                                            |
| net_buffer_length               | 16384                                                          |
| net_read_timeout                | 30                                                             |
| net_retry_count                 | 10                                                             |
| net_write_timeout               | 60                                                             |
| new                             | OFF                                                            |
| old_passwords                   | OFF                                                            |
| open_files_limit                | 622                                                            |
| optimizer_prune_level           | 1                                                              |
| optimizer_search_depth          | 62                                                             |
| pid_file                        | C:\Program Files\MySQL\MySQL Server 5.0\Data\houswlt.pid       |
| plugin_dir                      |                                                                |
| port                            | 3306                                                           |
| preload_buffer_size             | 32768                                                          |
| profiling                       | OFF                                                            |
| profiling_history_size          | 15                                                             |
| protocol_version                | 10                                                             |
| query_alloc_block_size          | 8192                                                           |
| query_cache_limit               | 1048576                                                        |
| query_cache_min_res_unit        | 4096                                                           |
| query_cache_size                | 0                                                              |
| query_cache_type                | ON                                                             |
| query_cache_wlock_invalidate    | OFF                                                            |
| query_prealloc_size             | 8192                                                           |
| range_alloc_block_size          | 4096                                                           |
| read_buffer_size                | 65536                                                          |
| read_only                       | OFF                                                            |
| read_rnd_buffer_size            | 262144                                                         |
| relay_log                       |                                                                |
| relay_log_index                 |                                                                |
| relay_log_info_file             | relay-log.info                                                 |
| relay_log_purge                 | ON                                                             |
| relay_log_space_limit           | 0                                                              |
| rpl_recovery_rank               | 0                                                              |
| secure_auth                     | OFF                                                            |
| secure_file_priv                |                                                                |
| shared_memory                   | OFF                                                            |
| shared_memory_base_name         | MYSQL                                                          |
| server_id                       | 0                                                              |
| skip_external_locking           | ON                                                             |
| skip_networking                 | OFF                                                            |
| skip_show_database              | OFF                                                            |
| slave_compressed_protocol       | OFF                                                            |
| slave_load_tmpdir               | C:\WINDOWS\TEMP\                                               |
| slave_net_timeout               | 3600                                                           |
| slave_skip_errors               | OFF                                                            |
| slave_transaction_retries       | 10                                                             |
| slow_launch_time                | 2                                                              |
| sort_buffer_size                | 262144                                                         |
| sql_big_selects                 | ON                                                             |
| sql_mode                        | STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION |
| sql_notes                       | ON                                                             |
| sql_warnings                    | OFF                                                            |
| ssl_ca                          |                                                                |
| ssl_capath                      |                                                                |
| ssl_cert                        |                                                                |
| ssl_cipher                      |                                                                |
| ssl_key                         |                                                                |
| storage_engine                  | InnoDB                                                         |
| sync_binlog                     | 0                                                              |
| sync_frm                        | ON                                                             |
| system_time_zone                | China Standard Time                                            |
| table_cache                     | 256                                                            |
| table_lock_wait_timeout         | 50                                                             |
| table_type                      | InnoDB                                                         |
| thread_cache_size               | 8                                                              |
| thread_stack                    | 196608                                                         |
| time_format                     | %H:%i:%s                                                       |
| time_zone                       | SYSTEM                                                         |
| timed_mutexes                   | OFF                                                            |
| tmp_table_size                  | 18874368                                                       |
| tmpdir                          | C:\WINDOWS\TEMP\                                               |
| transaction_alloc_block_size    | 8192                                                           |
| transaction_prealloc_size       | 4096                                                           |
| tx_isolation                    | REPEATABLE-READ                                                |
| updatable_views_with_limit      | YES                                                            |
| version                         | 5.0.77-community-nt                                            |
| version_comment                 | MySQL Community Edition (GPL)                                  |
| version_compile_machine         | ia32                                                           |
| version_compile_os              | Win32                                                          |
| wait_timeout                    | 28800                                                          |
+---------------------------------+----------------------------------------------------------------+

232 rows in set (0.01 sec)

4.查看服务器运行状态值演示
mysql> show status;
+-----------------------------------+----------+
| Variable_name                     | Value    |
+-----------------------------------+----------+
| Aborted_clients                   | 0        |
| Aborted_connects                  | 1        |
| Binlog_cache_disk_use             | 0        |
| Binlog_cache_use                  | 0        |
| Bytes_received                    | 95       |
| Bytes_sent                        | 180      |
| Com_admin_commands                | 0        |
| Com_alter_db                      | 0        |
| Com_alter_table                   | 0        |
| Com_analyze                       | 0        |
| Com_backup_table                  | 0        |
| Com_begin                         | 0        |
| Com_call_procedure                | 0        |
| Com_change_db                     | 0        |
| Com_change_master                 | 0        |
| Com_check                         | 0        |
| Com_checksum                      | 0        |
| Com_commit                        | 0        |
| Com_create_db                     | 0        |
| Com_create_function               | 0        |
| Com_create_index                  | 0        |
| Com_create_table                  | 0        |
| Com_create_user                   | 0        |
| Com_dealloc_sql                   | 0        |
| Com_delete                        | 0        |
| Com_delete_multi                  | 0        |
| Com_do                            | 0        |
| Com_drop_db                       | 0        |
| Com_drop_function                 | 0        |
| Com_drop_index                    | 0        |
| Com_drop_table                    | 0        |
| Com_drop_user                     | 0        |
| Com_execute_sql                   | 0        |
| Com_flush                         | 0        |
| Com_grant                         | 0        |
| Com_ha_close                      | 0        |
| Com_ha_open                       | 0        |
| Com_ha_read                       | 0        |
| Com_help                          | 0        |
| Com_insert                        | 0        |
| Com_insert_select                 | 0        |
| Com_kill                          | 0        |
| Com_load                          | 0        |
| Com_load_master_data              | 0        |
| Com_load_master_table             | 0        |
| Com_lock_tables                   | 0        |
| Com_optimize                      | 0        |
| Com_preload_keys                  | 0        |
| Com_prepare_sql                   | 0        |
| Com_purge                         | 0        |
| Com_purge_before_date             | 0        |
| Com_rename_table                  | 0        |
| Com_repair                        | 0        |
| Com_replace                       | 0        |
| Com_replace_select                | 0        |
| Com_reset                         | 0        |
| Com_restore_table                 | 0        |
| Com_revoke                        | 0        |
| Com_revoke_all                    | 0        |
| Com_rollback                      | 0        |
| Com_savepoint                     | 0        |
| Com_select                        | 1        |
| Com_set_option                    | 0        |
| Com_show_binlog_events            | 0        |
| Com_show_binlogs                  | 0        |
| Com_show_charsets                 | 0        |
| Com_show_collations               | 0        |
| Com_show_column_types             | 0        |
| Com_show_create_db                | 0        |
| Com_show_create_table             | 0        |
| Com_show_databases                | 0        |
| Com_show_errors                   | 0        |
| Com_show_fields                   | 0        |
| Com_show_grants                   | 0        |
| Com_show_innodb_status            | 0        |
| Com_show_keys                     | 0        |
| Com_show_logs                     | 0        |
| Com_show_master_status            | 0        |
| Com_show_ndb_status               | 0        |
| Com_show_new_master               | 0        |
| Com_show_open_tables              | 0        |
| Com_show_privileges               | 0        |
| Com_show_processlist              | 0        |
| Com_show_slave_hosts              | 0        |
| Com_show_slave_status             | 0        |
| Com_show_status                   | 1        |
| Com_show_storage_engines          | 0        |
| Com_show_tables                   | 0        |
| Com_show_triggers                 | 0        |
| Com_show_variables                | 0        |
| Com_show_warnings                 | 0        |
| Com_slave_start                   | 0        |
| Com_slave_stop                    | 0        |
| Com_stmt_close                    | 0        |
| Com_stmt_execute                  | 0        |
| Com_stmt_fetch                    | 0        |
| Com_stmt_prepare                  | 0        |
| Com_stmt_reset                    | 0        |
| Com_stmt_send_long_data           | 0        |
| Com_truncate                      | 0        |
| Com_unlock_tables                 | 0        |
| Com_update                        | 0        |
| Com_update_multi                  | 0        |
| Com_xa_commit                     | 0        |
| Com_xa_end                        | 0        |
| Com_xa_prepare                    | 0        |
| Com_xa_recover                    | 0        |
| Com_xa_rollback                   | 0        |
| Com_xa_start                      | 0        |
| Compression                       | OFF      |
| Connections                       | 6        |
| Created_tmp_disk_tables           | 0        |
| Created_tmp_files                 | 5        |
| Created_tmp_tables                | 1        |
| Delayed_errors                    | 0        |
| Delayed_insert_threads            | 0        |
| Delayed_writes                    | 0        |
| Flush_commands                    | 1        |
| Handler_commit                    | 0        |
| Handler_delete                    | 0        |
| Handler_discover                  | 0        |
| Handler_prepare                   | 0        |
| Handler_read_first                | 0        |
| Handler_read_key                  | 0        |
| Handler_read_next                 | 0        |
| Handler_read_prev                 | 0        |
| Handler_read_rnd                  | 0        |
| Handler_read_rnd_next             | 0        |
| Handler_rollback                  | 0        |
| Handler_savepoint                 | 0        |
| Handler_savepoint_rollback        | 0        |
| Handler_update                    | 0        |
| Handler_write                     | 132      |
| Innodb_buffer_pool_pages_data     | 64       |
| Innodb_buffer_pool_pages_dirty    | 0        |
| Innodb_buffer_pool_pages_flushed  | 0        |
| Innodb_buffer_pool_pages_free     | 2944     |
| Innodb_buffer_pool_pages_misc     | 0        |
| Innodb_buffer_pool_pages_total    | 3008     |
| Innodb_buffer_pool_read_ahead_rnd | 1        |
| Innodb_buffer_pool_read_ahead_seq | 0        |
| Innodb_buffer_pool_read_requests  | 166      |
| Innodb_buffer_pool_reads          | 13       |
| Innodb_buffer_pool_wait_free      | 0        |
| Innodb_buffer_pool_write_requests | 0        |
| Innodb_data_fsyncs                | 3        |
| Innodb_data_pending_fsyncs        | 0        |
| Innodb_data_pending_reads         | 0        |
| Innodb_data_pending_writes        | 0        |
| Innodb_data_read                  | 3231744  |
| Innodb_data_reads                 | 74       |
| Innodb_data_writes                | 3        |
| Innodb_data_written               | 1536     |
| Innodb_dblwr_pages_written        | 0        |
| Innodb_dblwr_writes               | 0        |
| Innodb_log_waits                  | 0        |
| Innodb_log_write_requests         | 0        |
| Innodb_log_writes                 | 1        |
| Innodb_os_log_fsyncs              | 3        |
| Innodb_os_log_pending_fsyncs      | 0        |
| Innodb_os_log_pending_writes      | 0        |
| Innodb_os_log_written             | 512      |
| Innodb_page_size                  | 16384    |
| Innodb_pages_created              | 0        |
| Innodb_pages_read                 | 64       |
| Innodb_pages_written              | 0        |
| Innodb_row_lock_current_waits     | 0        |
| Innodb_row_lock_time              | 0        |
| Innodb_row_lock_time_avg          | 0        |
| Innodb_row_lock_time_max          | 0        |
| Innodb_row_lock_waits             | 0        |
| Innodb_rows_deleted               | 0        |
| Innodb_rows_inserted              | 0        |
| Innodb_rows_read                  | 0        |
| Innodb_rows_updated               | 0        |
| Key_blocks_not_flushed            | 0        |
| Key_blocks_unused                 | 22484    |
| Key_blocks_used                   | 0        |
| Key_read_requests                 | 0        |
| Key_reads                         | 0        |
| Key_write_requests                | 0        |
| Key_writes                        | 0        |
| Last_query_cost                   | 0.000000 |
| Max_used_connections              | 1        |
| Not_flushed_delayed_rows          | 0        |
| Open_files                        | 12       |
| Open_streams                      | 0        |
| Open_tables                       | 6        |
| Opened_tables                     | 0        |
| Prepared_stmt_count               | 0        |
| Qcache_free_blocks                | 0        |
| Qcache_free_memory                | 0        |
| Qcache_hits                       | 0        |
| Qcache_inserts                    | 0        |
| Qcache_lowmem_prunes              | 0        |
| Qcache_not_cached                 | 0        |
| Qcache_queries_in_cache           | 0        |
| Qcache_total_blocks               | 0        |
| Queries                           | 13       |
| Questions                         | 2        |
| Rpl_status                        | NULL     |
| Select_full_join                  | 0        |
| Select_full_range_join            | 0        |
| Select_range                      | 0        |
| Select_range_check                | 0        |
| Select_scan                       | 1        |
| Slave_open_temp_tables            | 0        |
| Slave_retried_transactions        | 0        |
| Slave_running                     | OFF      |
| Slow_launch_threads               | 0        |
| Slow_queries                      | 0        |
| Sort_merge_passes                 | 0        |
| Sort_range                        | 0        |
| Sort_rows                         | 0        |
| Sort_scan                         | 0        |
| Ssl_accept_renegotiates           | 0        |
| Ssl_accepts                       | 0        |
| Ssl_callback_cache_hits           | 0        |
| Ssl_cipher                        |          |
| Ssl_cipher_list                   |          |
| Ssl_client_connects               | 0        |
| Ssl_connect_renegotiates          | 0        |
| Ssl_ctx_verify_depth              | 0        |
| Ssl_ctx_verify_mode               | 0        |
| Ssl_default_timeout               | 0        |
| Ssl_finished_accepts              | 0        |
| Ssl_finished_connects             | 0        |
| Ssl_session_cache_hits            | 0        |
| Ssl_session_cache_misses          | 0        |
| Ssl_session_cache_mode            | NONE     |
| Ssl_session_cache_overflows       | 0        |
| Ssl_session_cache_size            | 0        |
| Ssl_session_cache_timeouts        | 0        |
| Ssl_sessions_reused               | 0        |
| Ssl_used_session_cache_entries    | 0        |
| Ssl_verify_depth                  | 0        |
| Ssl_verify_mode                   | 0        |
| Ssl_version                       |          |
| Table_locks_immediate             | 12       |
| Table_locks_waited                | 0        |
| Tc_log_max_pages_used             | 0        |
| Tc_log_page_size                  | 0        |
| Tc_log_page_waits                 | 0        |
| Threads_cached                    | 0        |
| Threads_connected                 | 1        |
| Threads_created                   | 1        |
| Threads_running                   | 1        |
| Uptime                            | 317      |
| Uptime_since_flush_status         | 13       |
+-----------------------------------+----------+
249 rows in set (0.00 sec)

5.针对上面列出来的参数针对不同的情况可以对MySQL数据库进行优化,每一个参数都值得研究一下

-- The End --

来自 “ ITPUB博客 ” ,链接:http://blog.itpub.net/519536/viewspace-605518/,如需转载,请注明出处,否则将追究法律责任。

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Oracle ACE 总监,阿里云MVP,北京大学理学硕士,恩墨学院创始人,教育专家,中国区 Cloudera 首位官方授权大数据讲师,金牌培训专家,BDA大数据联盟创始人,OCM联盟创始人,ACCUG创始人、ACOUG核心专家,Blogger。

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