SQL > MYSQL - Q&A > too many connections 에러 메세지 뜰때 (설정확인, 프로세서 확인) mysql
 
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작성일 : 09-12-31 09:30
too many connections 에러 메세지 뜰때 (설정확인, 프로세서 확인) mysql
 글쓴이 : 덩벙이 (211.♡.155.10)
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[Mysql] too many connections 에러 메세지 뜰때 (설정확인, 프로세서 확인) mysql

1. Mysql 설정된 내용보기
     > mysqladmin -u root -p variables

     > 패스워드 입력

 

     위의 결과에서
     max_connections | 100 
     wait_timeout | 300

     와 같은 것을 볼수 있습니다 . (설정에 따라 숫자는 다르게 나타납니다.)
     max_connections, wait_timeout 의 수치를 올려준다.

 

2. MySQL실행시에 주는 실행옵션값은 다음과 같다.
    > ./safe_mysqld -O max_connections=1000 -O table_cache=256 -O wait_timeout=800 &

 

3. 살아있는 프로세서 확인하기
    > mysqladmin -u root -p processlist


해보면...

[root@smart01 mysql]# ./bin/mysqladmin -u root -p processlist
Enter password:
+----+-------+--------------------+---------+---------+------+-------+------------------+
| Id | User  | Host               | db      | Command | Time | State | Info             |
+----+-------+--------------------+---------+---------+------+-------+------------------+
| 7  | smart | 192.168.1.186:1992 | testDB | Sleep   | 1372 |       |                  |
| 8  | smart | 192.168.1.186:1993 | testDB | Sleep   | 4    |       |                  |
| 9  | smart | 192.168.1.186:1994 | testDB | Sleep   | 1599 |       |                  |
| 13 | root  | localhost          |         | Query   | 0    |       | show processlist |
+----+-------+--------------------+---------+---------+------+-------+------------------+

[root@smart01 mysql]# ./bin/mysqladmin -u root -p variables
Enter password:
+-----------------------------------------+----------------------------------------------------------+
| Variable_name                           | Value                                                    |
+-----------------------------------------+----------------------------------------------------------+
| auto_increment_increment                | 1                                                        |
| auto_increment_offset                   | 1                                                        |
| automatic_sp_privileges                 | ON                                                       |
| back_log                                | 50                                                       |
| basedir                                 | /usr/local/mysql-5.0.82-linux-i686/                      |
| 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                      | /usr/local/mysql-5.0.82-linux-i686/share/mysql/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                                 | /usr/local/mysql/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                              | 0                                                        |
| 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_community_features                 | YES                                                      |
| have_profiling                          | YES                                                      |
| have_crypt                              | YES                                                      |
| have_csv                                | YES                                                      |
| have_dynamic_loading                    | NO                                                       |
| have_example_engine                     | NO                                                       |
| have_federated_engine                   | DISABLED                                                 |
| have_geometry                           | YES                                                      |
| have_innodb                             | YES                                                      |
| have_isam                               | NO                                                       |
| have_merge_engine                       | YES                                                      |
| have_ndbcluster                         | DISABLED                                                 |
| have_openssl                            | DISABLED                                                 |
| have_ssl                                | DISABLED                                                 |
| have_query_cache                        | YES                                                      |
| have_raid                               | NO                                                       |
| have_rtree_keys                         | YES                                                      |
| have_symlink                            | YES                                                      |
| hostname                                | smart01                                                  |
| init_connect                            |                                                          |
| init_file                               |                                                          |
| init_slave                              |                                                          |
| innodb_additional_mem_pool_size         | 1048576                                                  |
| innodb_autoextend_increment             | 8                                                        |
| innodb_buffer_pool_awe_mem_mb           | 0                                                        |
| innodb_buffer_pool_size                 | 8388608                                                  |
| 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                    | 5242880                                                  |
| 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                                                    |
| innodb_use_legacy_cardinality_algorithm | ON                                                       |
| interactive_timeout                     | 28800                                                    |
| join_buffer_size                        | 131072                                                   |
| key_buffer_size                         | 16777216                                                 |
| key_cache_age_threshold                 | 300                                                      |
| key_cache_block_size                    | 1024                                                     |
| key_cache_division_limit                | 100                                                      |
| language                                | /usr/local/mysql-5.0.82-linux-i686/share/mysql/english/  |
| large_files_support                     | ON                                                       |
| large_page_size                         | 0                                                        |
| large_pages                             | OFF                                                      |
| lc_time_names                           | en_US                                                    |
| license                                 | GPL                                                      |
| local_infile                            | ON                                                       |
| locked_in_memory                        | OFF                                                      |
| log                                     | OFF                                                      |
| log_bin                                 | ON                                                       |
| log_bin_trust_function_creators         | OFF                                                      |
| log_error                               |                                                          |
| 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                  | OFF                                                      |
| lower_case_table_names                  | 0                                                        |
| max_allowed_packet                      | 1048576                                                  |
| max_binlog_cache_size                   | 4294963200                                               |
| max_binlog_size                         | 1073741824              &

 
 

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