[opencms-dev] MySQLNonTransientConnectionException - too many connections
Achim Westermann
Achim.Westermann at gmx.de
Wed May 4 10:05:32 CEST 2011
Hi Paul-Inge,
I think before tuning mysql you should be sure to avoid unnecessary queries. I don't know so I ask: Did you tune the flex cache settings? like Marc Fleury said: "Cache is king" (http://ottoyuen.com/library/articles/blue.pdf).
cheers,
Achim
-------- Original-Nachricht --------
> Datum: Wed, 4 May 2011 09:53:21 +0200
> Von: Paul-Inge Flakstad <flakstad at npolar.no>
> An: The OpenCms mailing list <opencms-dev at opencms.org>
> Betreff: Re: [opencms-dev] MySQLNonTransientConnectionException - too many connections
> Well, things are not well...
>
> The site is EXTREMELY slow again, no doubt due to the amount of traffic.
>
> It was fine yesterday, and earlier this morning. (I'm guessing something
> happened the moment that the amount of requests increased as people arrived
> at work around 9am.)
>
> When attempting to open a page:
> 1.) Page starts loading, but takes forever to complete OR
> 2.) Page never completes, instead you get a 503 (from Apache, not OpenCms)
>
> As far as I can see, Java/MySQL is not hogging CPU/memory during "hanging
> requests".
>
> This site should be able to handle tens of thousands pageviews per day,
> and should handle about 3000-5000 pageviews per day. Most request are made
> during working hours.
>
> As of now, I'm guessing we're nowhere near those numbers.
>
> NOTE: There are also 2 other opencms instances, hosting smaller sites,
> running on the same Tomcat.
>
> I tried restarting MySQL. It stopped, and won't start now. Looking into it
> now.
>
> Oh, and I found this in the Apache log:
> [Wed May 04 08:27:45 2011] [error] (70007)The timeout specified has
> expired: ajp_ilink_receive() can't receive header
> [Wed May 04 08:27:45 2011] [error] ajp_read_header: ajp_ilink_receive
> failed
> [Wed May 04 08:27:45 2011] [error] (120006)APR does not understand this
> error code: proxy: read response failed from 127.0.0.1:8009 (localhost)
> [Wed May 04 08:27:48 2011] [error] (70007)The timeout specified has
> expired: ajp_ilink_receive() can't receive header
> [Wed May 04 08:27:48 2011] [error] ajp_read_header: ajp_ilink_receive
> failed
> [Wed May 04 08:27:48 2011] [error] (120006)APR does not understand
>
>
> MySQL:
>
> ######### BEGIN my.cnf ##########
> [root at abel ~]# vi /etc/my.cnf
> [mysqld]
> datadir=/var/lib/mysql
> socket=/var/lib/mysql/mysql.sock
> user=mysql
>
> #skip-name-resolve
>
> # Set some reasonable max-sizes
> max_allowed_packet=128M
> max_connections=200
> max_connect_errors=100
> max_tmp_tables=128M
>
> # In-memory cache
> query_cache_size=128M
> table_cache=512
> thread_cache_size=128
> key_buffer_size=4096M # size of the buffer used for index blocks: aka "key
> cache"
>
> # Try number of CPU's*2 for thread_concurrency
> thread_concurrency=4
>
> # Enable logging of slow queres, default 10 seconds
> log-slow-queries
> # Log queries taking longer than 5 seconds
> long_query_time=5
>
> # Default to using old password format for compatibility with mysql 3.x
> # clients (those using the mysqlclient10 compatibility package).
> old_passwords=1
>
> [mysqld_safe]
> log-error=/var/log/mysqld.log
> pid-file=/var/run/mysqld/mysqld.pid
> ############# END my.cnf ############
>
> ############# BEGIN mysqld-slow.log ############
> # Query_time: 60 Lock_time: 0 Rows_sent: 0 Rows_examined: 0
> use npcms;
> INSERT INTO CMS_RESOURCE_LOCKS
> (RESOURCE_PATH,USER_ID,PROJECT_ID,LOCK_TYPE) VALUES
> ('/sites/np/en/people/oystein.varpe/index.html','bfe07a29-724e-11e0-806c-00237dea8b58','66017d61-6cb8-11df-91d1-00237dea8b58',4);
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp port: 0 Unix socket: /var/lib/mysql/mysql.sock
> Time Id Command Argument
> /usr/libexec/mysqld, Version: 5.0.77-log (Source distribution). started
> with:
> Tcp p
> ############# END mysqld-slow.log ############
>
> mysql> show processlist;
> +-----+------+-----------------+---------+---------+------+-------+------------------+
> | Id | User | Host | db | Command | Time | State | Info
> |
> +-----+------+-----------------+---------+---------+------+-------+------------------+
> | 60 | root | localhost:50548 | npcms | Sleep | 7487 | | NULL
> |
> | 90 | root | localhost:59594 | npcms | Sleep | 7490 | | NULL
> |
> | 91 | root | localhost:59595 | npcms | Sleep | 7134 | | NULL
> |
> | 100 | root | localhost:59604 | npcms | Sleep | 980 | | NULL
> |
> | 253 | root | localhost:51290 | opencms | Sleep | 1 | | NULL
> |
> | 254 | root | localhost:51291 | opencms | Sleep | 1564 | | NULL
> |
> | 256 | root | localhost:56245 | npcms | Sleep | 379 | | NULL
> |
> | 257 | root | localhost:56246 | npcms | Sleep | 7487 | | NULL
> |
> | 258 | root | localhost:56249 | npcms | Sleep | 980 | | NULL
> |
> | 259 | root | localhost:56250 | npcms | Sleep | 7487 | | NULL
> |
> | 260 | root | localhost:56251 | npcms | Sleep | 4 | | NULL
> |
> | 261 | root | localhost:56254 | npcms | Sleep | 7489 | | NULL
> |
> | 262 | root | localhost:56255 | npcms | Sleep | 7487 | | NULL
> |
> | 263 | root | localhost:56256 | npcms | Sleep | 7489 | | NULL
> |
> | 266 | root | localhost:56259 | npcms | Sleep | 980 | | NULL
> |
> | 267 | root | localhost:56260 | npcms | Sleep | 7488 | | NULL
> |
> | 270 | root | localhost:56263 | npcms | Sleep | 3729 | | NULL
> |
> | 271 | root | localhost:56264 | npcms | Sleep | 7487 | | NULL
> |
> | 272 | root | localhost:56265 | npcms | Sleep | 7134 | | NULL
> |
> | 274 | root | localhost:56267 | npcms | Sleep | 7487 | | NULL
> |
> | 276 | root | localhost:56269 | npcms | Sleep | 7489 | | NULL
> |
> | 277 | root | localhost:56270 | npcms | Sleep | 7487 | | NULL
> |
> | 278 | root | localhost:56271 | npcms | Sleep | 7487 | | NULL
> |
> | 279 | root | localhost:56272 | npcms | Sleep | 7488 | | NULL
> |
> | 280 | root | localhost:56273 | npcms | Sleep | 7134 | | NULL
> |
> | 281 | root | localhost:56274 | npcms | Sleep | 7488 | | NULL
> |
> | 282 | root | localhost:40350 | opencms | Sleep | 417 | | NULL
> |
> | 290 | root | localhost:42042 | accms | Sleep | 610 | | NULL
> |
> | 296 | root | localhost | NULL | Query | 0 | NULL | show
> processlist |
> +-----+------+-----------------+---------+---------+------+-------+------------------+
> 29 rows in set (0.00 sec)
>
> mysql> show status;
> +-----------------------------------+----------+
> | Variable_name | Value |
> +-----------------------------------+----------+
> | Aborted_clients | 58 |
> | Aborted_connects | 1 |
> | Binlog_cache_disk_use | 0 |
> | Binlog_cache_use | 0 |
> | Bytes_received | 144 |
> | Bytes_sent | 6446 |
> | 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 | 2 |
> | 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 | 295 |
> | Created_tmp_disk_tables | 0 |
> | Created_tmp_files | 51 |
> | Created_tmp_tables | 2 |
> | 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 | 250 |
> | Handler_rollback | 0 |
> | Handler_savepoint | 0 |
> | Handler_savepoint_rollback | 0 |
> | Handler_update | 0 |
> | Handler_write | 381 |
> | Innodb_buffer_pool_pages_data | 25 |
> | Innodb_buffer_pool_pages_dirty | 0 |
> | Innodb_buffer_pool_pages_flushed | 1 |
> | Innodb_buffer_pool_pages_free | 487 |
> | Innodb_buffer_pool_pages_misc | 0 |
> | Innodb_buffer_pool_pages_total | 512 |
> | Innodb_buffer_pool_read_ahead_rnd | 1 |
> | Innodb_buffer_pool_read_ahead_seq | 0 |
> | Innodb_buffer_pool_read_requests | 554 |
> | Innodb_buffer_pool_reads | 18 |
> | Innodb_buffer_pool_wait_free | 0 |
> | Innodb_buffer_pool_write_requests | 1 |
> | Innodb_data_fsyncs | 7 |
> | Innodb_data_pending_fsyncs | 0 |
> | Innodb_data_pending_reads | 0 |
> | Innodb_data_pending_writes | 0 |
> | Innodb_data_read | 2592768 |
> | Innodb_data_reads | 31 |
> | Innodb_data_writes | 7 |
> | Innodb_data_written | 35328 |
> | Innodb_dblwr_pages_written | 1 |
> | Innodb_dblwr_writes | 1 |
> | Innodb_log_waits | 0 |
> | Innodb_log_write_requests | 0 |
> | Innodb_log_writes | 2 |
> | Innodb_os_log_fsyncs | 5 |
> | Innodb_os_log_pending_fsyncs | 0 |
> | Innodb_os_log_pending_writes | 0 |
> | Innodb_os_log_written | 1024 |
> | Innodb_page_size | 16384 |
> | Innodb_pages_created | 0 |
> | Innodb_pages_read | 25 |
> | Innodb_pages_written | 1 |
> | 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 | 25 |
> | Innodb_rows_updated | 0 |
> | Key_blocks_not_flushed | 0 |
> | Key_blocks_unused | 3413964 |
> | Key_blocks_used | 15508 |
> | Key_read_requests | 48359034 |
> | Key_reads | 31139 |
> | Key_write_requests | 227591 |
> | Key_writes | 130452 |
> | Last_query_cost | 0.000000 |
> | Max_used_connections | 124 |
> | Not_flushed_delayed_rows | 0 |
> | Open_files | 413 |
> | Open_streams | 0 |
> | Open_tables | 315 |
> | Opened_tables | 0 |
> | Prepared_stmt_count | 0 |
> | Qcache_free_blocks | 65 |
> | Qcache_free_memory | 36690328 |
> | Qcache_hits | 13165331 |
> | Qcache_inserts | 1098712 |
> | Qcache_lowmem_prunes | 0 |
> | Qcache_not_cached | 235351 |
> | Qcache_queries_in_cache | 32218 |
> | Qcache_total_blocks | 64620 |
> | Queries | 14543660 |
> | Questions | 3 |
> | Rpl_status | NULL |
> | Select_full_join | 0 |
> | Select_full_range_join | 0 |
> | Select_range | 0 |
> | Select_range_check | 0 |
> | Select_scan | 2 |
> | 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 | 2995944 |
> | Table_locks_waited | 852 |
> | Tc_log_max_pages_used | 0 |
> | Tc_log_page_size | 0 |
> | Tc_log_page_waits | 0 |
> | Threads_cached | 95 |
> | Threads_connected | 29 |
> | Threads_created | 124 |
> | Threads_running | 1 |
> | Uptime | 60386 |
> | Uptime_since_flush_status | 14543660 |
> +-----------------------------------+----------+
> 249 rows in set (0.00 sec)
>
> mysql> show variables;
> +---------------------------------+------------------------------------------------------------+
> | Variable_name | Value
> |
> +---------------------------------+------------------------------------------------------------+
> | auto_increment_increment | 1
> |
> | auto_increment_offset | 1
> |
> | automatic_sp_privileges | ON
> |
> | back_log | 50
> |
> | bdb_cache_size | 8384512
> |
> | bdb_log_buffer_size | 262144
> |
> | bdb_logdir |
> |
> | bdb_max_lock | 10000
> |
> | bdb_shared_data | OFF
> |
> | bdb_tmpdir | /tmp/
> |
> | binlog_cache_size | 32768
> |
> | bulk_insert_buffer_size | 8388608
> |
> | completion_type | 0
> |
> | concurrent_insert | 1
> |
> | connect_timeout | 10
> |
> | 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 | NO
> |
> | have_bdb | YES
> |
> | have_blackhole_engine | NO
> |
> | have_compress | YES
> |
> | have_crypt | YES
> |
> | have_csv | NO
> |
> | have_dynamic_loading | YES
> |
> | have_example_engine | NO
> |
> | have_federated_engine | NO
> |
> | 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
> |
> | 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
> |
> | interactive_timeout | 28800
> |
> | join_buffer_size | 131072
> |
> | key_buffer_size | 4294967296
> |
> | key_cache_age_threshold | 300
> |
> | key_cache_block_size | 1024
> |
> | key_cache_division_limit | 100
> |
> | language | /usr/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 | OFF
> |
> | log_bin_trust_function_creators | OFF
> |
> | log_error |
> |
> | log_queries_not_using_indexes | OFF
> |
> | log_slave_updates | OFF
> |
> | log_slow_queries | ON
> |
> | log_warnings | 1
> |
> | long_query_time | 5
> |
> | low_priority_updates | OFF
> |
> | lower_case_file_system | OFF
> |
> | lower_case_table_names | 0
> |
> | max_allowed_packet | 134217728
> |
> | max_binlog_cache_size | 18446744073709547520
> |
> | max_binlog_size | 1073741824
> |
> | max_connect_errors | 100
> |
> | max_connections | 200
> |
> | 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 | 18446744073709551615
> |
> | max_sort_length | 1024
> |
> | max_sp_recursion_depth | 0
> |
> | max_tmp_tables | 134217728
> |
> | max_user_connections | 0
> |
> | max_write_lock_count | 18446744073709551615
> |
> | multi_range_count | 256
> |
> | myisam_data_pointer_size | 6
> |
> | myisam_max_sort_file_size | 9223372036853727232
> |
> | myisam_recover_options | OFF
> |
> | myisam_repair_threads | 1
> |
> | myisam_sort_buffer_size | 8388608
> |
> | myisam_stats_method | nulls_unequal
> |
> | net_buffer_length | 16384
> |
> | net_read_timeout | 30
> |
> | net_retry_count | 10
> |
> | net_write_timeout | 60
> |
> | new | OFF
> |
> | old_passwords | ON
> |
> | open_files_limit | 1234
> |
> | optimizer_prune_level | 1
> |
> | optimizer_search_depth | 62
> |
> | pid_file | /var/run/mysqld/mysqld.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 | 134217728
> |
> | query_cache_type | ON
> |
> | query_cache_wlock_invalidate | OFF
> |
> | query_prealloc_size | 8192
> |
> | range_alloc_block_size | 4096
> |
> | read_buffer_size | 131072
> |
> | 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 |
> |
> | server_id | 0
> |
> | skip_external_locking | ON
> |
> | skip_networking | OFF
> |
> | skip_show_database | OFF
> |
> | slave_compressed_protocol | OFF
> |
> | slave_load_tmpdir | /tmp/
> |
> | slave_net_timeout | 3600
> |
> | slave_skip_errors | OFF
> |
> | slave_transaction_retries | 10
> |
> | slow_launch_time | 2
> |
> | socket | /var/lib/mysql/mysql.sock
> |
> | sort_buffer_size | 2097144
> |
> | sql_big_selects | ON
> |
> | sql_mode |
> |
> | sql_notes | ON
> |
> | sql_warnings | OFF
> |
> | ssl_ca |
> |
> | ssl_capath |
> |
> | ssl_cert |
> |
> | ssl_cipher |
> |
> | ssl_key |
> |
> | storage_engine | MyISAM
> |
> | sync_binlog | 0
> |
> | sync_frm | ON
> |
> | system_time_zone | CEST
> |
> | table_cache | 512
> |
> | table_lock_wait_timeout | 50
> |
> | table_type | MyISAM
> |
> | thread_cache_size | 128
> |
> | thread_stack | 262144
> |
> | time_format | %H:%i:%s
> |
> | time_zone | SYSTEM
> |
> | timed_mutexes | OFF
> |
> | tmp_table_size | 33554432
> |
> | tmpdir | /tmp/
> |
> | transaction_alloc_block_size | 8192
> |
> | transaction_prealloc_size | 4096
> |
> | tx_isolation | REPEATABLE-READ
> |
> | updatable_views_with_limit | YES
> |
> | version | 5.0.77-log
> |
> | version_bdb | Sleepycat Software: Berkeley DB
> 4.1.24: (January 29, 2009) |
> | version_comment | Source distribution
> |
> | version_compile_machine | x86_64
> |
> | version_compile_os | redhat-linux-gnu
> |
> | wait_timeout | 28800
> |
> +---------------------------------+------------------------------------------------------------+
> 239 rows in set (0.00 sec)
>
> Relevant parts of the config files:
> -----------------------------------
>
> ######### BEGIN opencms.properties ##########
> #
> # Configuration of the driver manager
> #################################################################################
> driver.vfs=db
> driver.project=db
> driver.user=db
> driver.history=db
>
> #
> # Declaration of database pools
> #################################################################################
> db.pools=default
>
> #
> # Configuration of the default database pool
> #################################################################################
> # name of the JDBC driver
> db.pool.default.jdbcDriver=org.gjt.mm.mysql.Driver
>
> # URL of the JDBC driver
> db.pool.default.jdbcUrl=jdbc:mysql://localhost:3306/npcms
>
> # optional parameters for the URL of the JDBC driver
> db.pool.default.jdbcUrl.params=?characterEncoding\=UTF-8
>
> # user name to connect to the database
> db.pool.default.user=xxx
>
> # password to connect to the database
> db.pool.default.password=xxx
>
> # the URL to make the JDBC DriverManager return connections from the DBCP
> pool
> db.pool.default.poolUrl=opencms:default
>
> # the maximum number of objects that can be borrowed from the pool
> # NOTE: The value should not increase MySQL's max_connections!
> #db.pool.default.maxActive=25
> db.pool.default.maxActive=200
>
> # the maximum amount of time before throwing an exception when the pool is
> exhausted
> db.pool.default.maxWait=2000
>
> # the minimum number of objects that will kept connected
> db.pool.default.minIdle=3
>
> # the maximum number of objects that can sit idled in the pool
> db.pool.default.maxIdle=100
>
> # action to take when the pool is exhausted {grow|block|fail}
> db.pool.default.whenExhaustedAction=grow
>
> # connections will be validated before they are borrowed from the pool
> db.pool.default.testOnBorrow=false
>
> # connections will be validated by evictor thread
> db.pool.default.testWhileIdle=true
>
> # number of milliseconds to sleep between runs of the evictor thread
> # -1 means no idle connection evictor thread will be run
> db.pool.default.timeBetweenEvictionRuns=1800000
>
> # number of connections tested in a run of the evictor thread
> db.pool.default.numTestsPerEvictionRun=3
>
> # minimum amount of time in milliseconds a connection may be idle in the
> pool before it is eligable for eviction
> db.pool.default.minEvictableIdleTime=600000
>
> # the query to validate connections
> db.pool.default.testQuery=SELECT STRUCTURE_ID FROM CMS_OFFLINE_STRUCTURE
> WHERE RESOURCE_PATH = '/'
> #db.pool.default.testQuery=
>
> # number of attempts to connect to the database during startup (default =
> 10)
> db.pool.default.connects=10
>
> # sleep time between two attempts to connect to the database during
> startup in ms (default = 5000)
> db.pool.default.wait=5000
>
> #
> # Configuration for statement pooling
> #################################################################################
> db.statements.default.pooling=true
> #db.statements.default.maxActive=200
> db.statements.default.maxActive=900
> db.statements.default.maxWait=2000
> db.statements.default.maxIdle=100
> #db.statements.default.whenExhaustedAction=block
> db.statements.default.whenExhaustedAction=grow
>
> #
> # Configuration of the database driver manager
> #################################################################################
> db.name=mysql_41
>
> db.vfs.driver=org.opencms.db.mysql.CmsVfsDriver
> db.vfs.pool=opencms:default
> db.vfs.sqlmanager=org.opencms.db.mysql.CmsSqlManager
>
> db.project.driver=org.opencms.db.mysql.CmsProjectDriver
> db.project.pool=opencms:default
> db.project.sqlmanager=org.opencms.db.mysql.CmsSqlManager
>
> db.user.driver=org.opencms.db.mysql.CmsUserDriver
> db.user.pool=opencms:default
> db.user.sqlmanager=org.opencms.db.mysql.CmsSqlManager
>
> db.history.driver=org.opencms.db.mysql.CmsHistoryDriver
> db.history.pool=opencms:default
> db.history.sqlmanager=org.opencms.db.mysql.CmsSqlManager
>
> db.cos.pool=opencms:default
> ######### END opencms.properties ##########
>
> ######### BEGIN server.xml ##########
> <!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
> <Connector port="8080" maxHttpHeaderSize="8192"
> maxThreads="512" minSpareThreads="10" maxSpareThreads="100"
> maxProcessors="512" acceptCount="400"
> enableLookups="false" redirectPort="8443"
> connectionTimeout="20000" disableUploadTimeout="true" />
>
> <!-- Define an AJP 1.3 Connector on port 8009 -->
> <Connector port="8009"
> maxThreads="512" minSpareThreads="10" maxSpareThreads="100"
> maxProcessors="512" acceptCount="400"
> emptySessionPath="true" protocol="AJP/1.3" URIEncoding="utf-8"
> />
> ######### END server.xml ##########
>
> ######### BEGIN httpd.conf ##########
> <IfModule prefork.c>
> StartServers 8
> MinSpareServers 50
> MaxSpareServers 200
> ServerLimit 1024
> MaxClients 512
> MaxRequestsPerChild 4000
> </IfModule>
>
> <IfModule worker.c>
> StartServers 2
> MaxClients 512
> MinSpareThreads 50
> MaxSpareThreads 200
> ThreadsPerChild 25
> MaxRequestsPerChild 4000
> </IfModule>
> ######### END httpd.conf ##########
>
> Thanks,
> Paul
>
> > -----Original Message-----
> > From: opencms-dev-bounces at opencms.org
> > [mailto:opencms-dev-bounces at opencms.org] On Behalf Of
> > Paul-Inge Flakstad
> > Sent: 3. mai 2011 17:10
> > To: The OpenCms mailing list
> > Subject: Re: [opencms-dev]
> > MySQLNonTransientConnectionException - too many connections
> >
> > Hi Hernan,
> >
> > I used all of yesterday to dig deep in the config of all
> > Tomat, Apache, MySQL and OpenCms. Experimented for a while, it
> > worked better (today I started seeing "Too many files open"
> > exceptions though).
> >
> > After implementing the changes you suggested here, it seems
> > everything is A LOT better - probably very much due to the
> > key_buffer_size, which provided the major change after
> > yesterday's experimenting.
> >
> > I'll just have to wait and see if things are stable now.
> >
> > Thank you so much for your help! :)
> >
> > Best regards,
> > Paul
> >
> > > -----Original Message-----
> > > From: opencms-dev-bounces at opencms.org
> > > [mailto:opencms-dev-bounces at opencms.org] On Behalf Of HERNAN - TFSLA
> > > Sent: 3. mai 2011 00:22
> > > To: opencms-dev at opencms.org
> > > Subject: Re: [opencms-dev]
> > > MySQLNonTransientConnectionException - too many connections
> > >
> > >
> > > If both JAVA and MYSQL are hunging at the same time, most
> > > probably, you have
> > > an issue with a process / coding rather than config.
> > > Nevertheless, your
> > > config is not a very happy one :)
> > >
> > > 1) First of all, you should probably enable SLOW QUERIES and
> > > during the high
> > > cpu usage show a process list on MYSQL (queries on execution).
> > >
> > > 2) if you are using MYISAM table format, adjust the
> > > KEY_BUFFER_SIZE value to
> > > 4gb (1/3 of the total ram). If you are using INNODB, do that for
> > > INNODB_BUFFER_POOL_SIZE.
> > >
> > > 3) change your TABLE_CACHE to something like 512,
> > > thread_cache to 32 and
> > > change max_tmp_tables to 128mb.
> > >
> > > 4) change max_connections to something like 200. There is no
> > > reason to put
> > > it on 2000 for a small site.
> > >
> > > 5) change MAX_ACTIVE on the opencms.properties to 200 (it should be
> > > sufficient with 25 for small sites, but it depends on a lot
> > > of factors such
> > > as connection types, cycling, session duration, etc).
> > >
> > > 6) on my.cnf add the following line: --skip-name-resolve
> > >
> > > I'm also assuming your flexcache configuration is in place
> > > for every major
> > > JSP and you have an Apache cache / content expiration strategy.
> > >
> > > Please, change all on we continue from there. If the problem
> > > presents itself
> > > again, please post the SHOW PROCESS LIST and slow queries results.
> > >
> > >
> > > Paul-Inge Flakstad wrote:
> > > >
> > > > Hi,
> > > >
> > > > Thanks for the help, I appreciate it very much!
> > > >
> > > > Our server admin says Java and MySQL are both at 100% CPU
> > > when the system
> > > > hangs.
> > > >
> > > > The box is a new dual-core with 16GB RAM.
> > > >
> > > > Here's the config (I removed some irrelevant parts):
> > > >
> > > >
> > > > The connector is AJP 1.3 - defined in server.xml:
> > > > <Connector port="8009" emptySessionPath="true" protocol="AJP/1.3"
> > > > URIEncoding="utf-8" />
> > > >
> > > >
> > > > opencms.properties
> > > > ------------------
> > > > #
> > > > # Configuration of the driver manager
> > > >
> > > ##############################################################
> > > ###################
> > > > driver.vfs=db
> > > > driver.project=db
> > > > driver.user=db
> > > > driver.history=db
> > > >
> > > > #
> > > > # Declaration of database pools
> > > >
> > > ##############################################################
> > > ###################
> > > > db.pools=default
> > > >
> > > > #
> > > > # Configuration of the default database pool
> > > >
> > > ##############################################################
> > > ###################
> > > > # name of the JDBC driver
> > > > db.pool.default.jdbcDriver=org.gjt.mm.mysql.Driver
> > > >
> > > > # URL of the JDBC driver
> > > > db.pool.default.jdbcUrl=jdbc:mysql://localhost:3306/npcms
> > > >
> > > > # optional parameters for the URL of the JDBC driver
> > > > db.pool.default.jdbcUrl.params=?characterEncoding\=UTF-8
> > > >
> > > > # user name to connect to the database
> > > > db.pool.default.user=xxxxxxxxx
> > > >
> > > > # password to connect to the database
> > > > db.pool.default.password=xxxxxxxxxx
> > > >
> > > > # the URL to make the JDBC DriverManager return connections
> > > from the DBCP
> > > > pool
> > > > db.pool.default.poolUrl=opencms:default
> > > >
> > > > # the maximum number of objects that can be borrowed from the pool
> > > > db.pool.default.maxActive=25
> > > >
> > > > # the maximum amount of time before throwing an exception
> > > when the pool is
> > > > exhausted
> > > > db.pool.default.maxWait=2000
> > > >
> > > > # the minimum number of objects that will kept connected
> > > > db.pool.default.minIdle=3
> > > >
> > > > # the maximum number of objects that can sit idled in the pool
> > > > db.pool.default.maxIdle=10
> > > >
> > > > # action to take when the pool is exhausted {grow|block|fail}
> > > > db.pool.default.whenExhaustedAction=grow
> > > >
> > > > # connections will be validated before they are borrowed
> > > from the pool
> > > > db.pool.default.testOnBorrow=false
> > > >
> > > > # connections will be validated by evictor thread
> > > > db.pool.default.testWhileIdle=true
> > > >
> > > > # number of milliseconds to sleep between runs of the
> > evictor thread
> > > > # -1 means no idle connection evictor thread will be run
> > > > db.pool.default.timeBetweenEvictionRuns=3600000
> > > >
> > > > # number of connections tested in a run of the evictor thread
> > > > db.pool.default.numTestsPerEvictionRun=3
> > > >
> > > > # minimum amount of time in milliseconds a connection may
> > > be idle in the
> > > > pool before it is eligable for eviction
> > > > db.pool.default.minEvictableIdleTime=1800000
> > > >
> > > > # the query to validate connections
> > > > db.pool.default.testQuery=SELECT STRUCTURE_ID FROM
> > > CMS_OFFLINE_STRUCTURE
> > > > WHERE RESOURCE_PATH = '/'
> > > > #db.pool.default.testQuery=
> > > >
> > > > # number of attempts to connect to the database during
> > > startup (default =
> > > > 10)
> > > > db.pool.default.connects=10
> > > >
> > > > # sleep time between two attempts to connect to the
> > database during
> > > > startup in ms (default = 5000)
> > > > db.pool.default.wait=5000
> > > >
> > > > #
> > > > # Configuration for statement pooling
> > > >
> > > ##############################################################
> > > ###################
> > > > db.statements.default.pooling=true
> > > > db.statements.default.maxActive=200
> > > > db.statements.default.maxWait=2000
> > > > db.statements.default.maxIdle=100
> > > > db.statements.default.whenExhaustedAction=block
> > > >
> > > > #
> > > > # Configuration of the database driver manager
> > > >
> > > ##############################################################
> > > ###################
> > > > db.name=mysql_41
> > > >
> > > > db.vfs.driver=org.opencms.db.mysql.CmsVfsDriver
> > > > db.vfs.pool=opencms:default
> > > > db.vfs.sqlmanager=org.opencms.db.mysql.CmsSqlManager
> > > >
> > > > db.project.driver=org.opencms.db.mysql.CmsProjectDriver
> > > > db.project.pool=opencms:default
> > > > db.project.sqlmanager=org.opencms.db.mysql.CmsSqlManager
> > > >
> > > > db.user.driver=org.opencms.db.mysql.CmsUserDriver
> > > > db.user.pool=opencms:default
> > > > db.user.sqlmanager=org.opencms.db.mysql.CmsSqlManager
> > > >
> > > > db.history.driver=org.opencms.db.mysql.CmsHistoryDriver
> > > > db.history.pool=opencms:default
> > > > db.history.sqlmanager=org.opencms.db.mysql.CmsSqlManager
> > > >
> > > > db.cos.pool=opencms:default
> > > > #
> > > > # End of opencms.properties
> > > >
> > > ##############################################################
> > > ###################
> > > >
> > > >
> > > > mysql> show variables;
> > > >
> > > +---------------------------------+---------------------------
> > > ---------------------------------+
> > > > | Variable_name | Value
> > >
> > > > |
> > > >
> > > +---------------------------------+---------------------------
> > > ---------------------------------+
> > > > | auto_increment_increment | 1
> > >
> > > > |
> > > > | auto_increment_offset | 1
> > >
> > > > |
> > > > | automatic_sp_privileges | ON
> > >
> > > > |
> > > > | back_log | 50
> > >
> > > > |
> > > > | basedir | /usr/
> > >
> > > > |
> > > > | bdb_cache_size | 8384512
> > >
> > > > |
> > > > | bdb_home | /var/lib/mysql/
> > >
> > > > |
> > > > | bdb_log_buffer_size | 262144
> > >
> > > > |
> > > > | bdb_logdir |
> > >
> > > > |
> > > > | bdb_max_lock | 10000
> > >
> > > > |
> > > > | bdb_shared_data | OFF
> > >
> > > > |
> > > > | bdb_tmpdir | /tmp/
> > >
> > > > |
> > > > | binlog_cache_size | 32768
> > >
> > > > |
> > > > | bulk_insert_buffer_size | 8388608
> > >
> > > > |
> > > > | completion_type | 0
> > >
> > > > |
> > > > | concurrent_insert | 1
> > >
> > > > |
> > > > | connect_timeout | 10
> > >
> > > > |
> > > > | 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 | NO
> > >
> > > > |
> > > > | have_bdb | YES
> > >
> > > > |
> > > > | have_blackhole_engine | NO
> > >
> > > > |
> > > > | have_compress | YES
> > >
> > > > |
> > > > | have_crypt | YES
> > >
> > > > |
> > > > | have_csv | NO
> > >
> > > > |
> > > > | have_dynamic_loading | YES
> > >
> > > > |
> > > > | have_example_engine | NO
> > >
> > > > |
> > > > | have_federated_engine | NO
> > >
> > > > |
> > > > | 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
> > >
> > > > |
> > > > | 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
> > >
> > > > |
> > > > | interactive_timeout | 28800
> > >
> > > > |
> > > > | join_buffer_size | 131072
> > >
> > > > |
> > > > | key_buffer_size | 8384512
> > >
> > > > |
> > > > | key_cache_age_threshold | 300
> > >
> > > > |
> > > > | key_cache_block_size | 1024
> > >
> > > > |
> > > > | key_cache_division_limit | 100
> > >
> > > > |
> > > > | large_files_support | ON
> > >
> > > > |
> > > > | large_page_size | 0
> > >
> > > > |
> > > > | large_pages | OFF
> > >
> > > > |
> > > > | local_infile | ON
> > >
> > > > |
> > > > | locked_in_memory | OFF
> > >
> > > > |
> > > > | log | OFF
> > >
> > > > |
> > > > | log_bin | OFF
> > >
> > > > |
> > > > | 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 | 67108864
> > >
> > > > |
> > > > | max_binlog_cache_size | 18446744073709547520
> > >
> > > > |
> > > > | max_binlog_size | 1073741824
> > >
> > > > |
> > > > | max_connect_errors | 10
> > >
> > > > |
> > > > | max_connections | 2048
> > >
> > > > |
> > > > | 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 | 18446744073709551615
> > >
> > > > |
> > > > | max_sort_length | 1024
> > >
> > > > |
> > > > | max_sp_recursion_depth | 0
> > >
> > > > |
> > > > | max_tmp_tables | 32
> > >
> > > > |
> > > > | max_user_connections | 0
> > >
> > > > |
> > > > | max_write_lock_count | 18446744073709551615
> > >
> > > > |
> > > > | multi_range_count | 256
> > >
> > > > |
> > > > | myisam_data_pointer_size | 6
> > >
> > > > |
> > > > | myisam_max_sort_file_size | 9223372036853727232
> > >
> > > > |
> > > > | myisam_recover_options | OFF
> > >
> > > > |
> > > > | myisam_repair_threads | 1
> > >
> > > > |
> > > > | myisam_sort_buffer_size | 8388608
> > >
> > > > |
> > > > | myisam_stats_method | nulls_unequal
> > >
> > > > |
> > > > | net_buffer_length | 16384
> > >
> > > > |
> > > > | net_read_timeout | 30
> > >
> > > > |
> > > > | net_retry_count | 10
> > >
> > > > |
> > > > | net_write_timeout | 60
> > >
> > > > |
> > > > | new | OFF
> > >
> > > > |
> > > > | old_passwords | ON
> > >
> > > > |
> > > > | open_files_limit | 10240
> > >
> > > > |
> > > > | optimizer_prune_level | 1
> > >
> > > > |
> > > > | optimizer_search_depth | 62
> > >
> > > > |
> > > > | pid_file |
> > > /var/run/mysqld/mysqld.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 | 131072
> > >
> > > > |
> > > > | 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 |
> > >
> > > > |
> > > > | server_id | 0
> > >
> > > > |
> > > > | skip_external_locking | ON
> > >
> > > > |
> > > > | skip_networking | OFF
> > >
> > > > |
> > > > | skip_show_database | OFF
> > >
> > > > |
> > > > | slave_compressed_protocol | OFF
> > >
> > > > |
> > > > | slave_load_tmpdir | /tmp/
> > >
> > > > |
> > > > | slave_net_timeout | 3600
> > >
> > > > |
> > > > | slave_skip_errors | OFF
> > >
> > > > |
> > > > | slave_transaction_retries | 10
> > >
> > > > |
> > > > | slow_launch_time | 2
> > >
> > > > |
> > > > | socket |
> > > /var/lib/mysql/mysql.sock
> > > > |
> > > > | sort_buffer_size | 2097144
> > >
> > > > |
> > > > | sql_big_selects | ON
> > >
> > > > |
> > > > | sql_mode |
> > >
> > > > |
> > > > | sql_notes | ON
> > >
> > > > |
> > > > | sql_warnings | OFF
> > >
> > > > |
> > > > | ssl_ca |
> > >
> > > > |
> > > > | ssl_capath |
> > >
> > > > |
> > > > | ssl_cert |
> > >
> > > > |
> > > > | ssl_cipher |
> > >
> > > > |
> > > > | ssl_key |
> > >
> > > > |
> > > > | storage_engine | MyISAM
> > >
> > > > |
> > > > | sync_binlog | 0
> > >
> > > > |
> > > > | sync_frm | ON
> > >
> > > > |
> > > > | table_cache | 64
> > >
> > > > |
> > > > | table_lock_wait_timeout | 50
> > >
> > > > |
> > > > | table_type | MyISAM
> > >
> > > > |
> > > > | thread_cache_size | 0
> > >
> > > > |
> > > > | thread_stack | 262144
> > >
> > > > |
> > > > | timed_mutexes | OFF
> > >
> > > > |
> > > > | tmp_table_size | 33554432
> > >
> > > > |
> > > > | transaction_alloc_block_size | 8192
> > >
> > > > |
> > > > | transaction_prealloc_size | 4096
> > >
> > > > |
> > > > | tx_isolation | REPEATABLE-READ
> > >
> > > > |
> > > > | updatable_views_with_limit | YES
> > >
> > > > |
> > > > | wait_timeout | 28800
> > >
> > > > |
> > > >
> > > +---------------------------------+---------------------------
> > > ---------------------------------+
> > > >
> > > >
> > > > mysql> show status;
> > > > +-----------------------------------+-----------+
> > > > | Variable_name | Value |
> > > > +-----------------------------------+-----------+
> > > > | Aborted_clients | 34 |
> > > > | Aborted_connects | 1 |
> > > > | Binlog_cache_disk_use | 0 |
> > > > | Binlog_cache_use | 0 |
> > > > | Bytes_received | 128 |
> > > > | Bytes_sent | 162 |
> > > > | 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 | 942289 |
> > > > | Created_tmp_disk_tables | 0 |
> > > > | Created_tmp_files | 93 |
> > > > | 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 | 25 |
> > > > | Innodb_buffer_pool_pages_dirty | 0 |
> > > > | Innodb_buffer_pool_pages_flushed | 1 |
> > > > | Innodb_buffer_pool_pages_free | 487 |
> > > > | Innodb_buffer_pool_pages_misc | 0 |
> > > > | Innodb_buffer_pool_pages_total | 512 |
> > > > | Innodb_buffer_pool_read_ahead_rnd | 1 |
> > > > | Innodb_buffer_pool_read_ahead_seq | 0 |
> > > > | Innodb_buffer_pool_read_requests | 560 |
> > > > | Innodb_buffer_pool_reads | 18 |
> > > > | Innodb_buffer_pool_wait_free | 0 |
> > > > | Innodb_buffer_pool_write_requests | 1 |
> > > > | Innodb_data_fsyncs | 7 |
> > > > | Innodb_data_pending_fsyncs | 0 |
> > > > | Innodb_data_pending_reads | 0 |
> > > > | Innodb_data_pending_writes | 0 |
> > > > | Innodb_data_read | 2592768 |
> > > > | Innodb_data_reads | 31 |
> > > > | Innodb_data_writes | 7 |
> > > > | Innodb_data_written | 35328 |
> > > > | Innodb_dblwr_pages_written | 1 |
> > > > | Innodb_dblwr_writes | 1 |
> > > > | Innodb_log_waits | 0 |
> > > > | Innodb_log_write_requests | 0 |
> > > > | Innodb_log_writes | 2 |
> > > > | Innodb_os_log_fsyncs | 5 |
> > > > | Innodb_os_log_pending_fsyncs | 0 |
> > > > | Innodb_os_log_pending_writes | 0 |
> > > > | Innodb_os_log_written | 1024 |
> > > > | Innodb_page_size | 16384 |
> > > > | Innodb_pages_created | 0 |
> > > > | Innodb_pages_read | 25 |
> > > > | Innodb_pages_written | 1 |
> > > > | 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 | 25 |
> > > > | Innodb_rows_updated | 0 |
> > > > | Key_blocks_not_flushed | 0 |
> > > > | Key_blocks_unused | 4158 |
> > > > | Key_blocks_used | 6694 |
> > > > | Key_read_requests | 696459654 |
> > > > | Key_reads | 1824563 |
> > > > | Key_write_requests | 4009303 |
> > > > | Key_writes | 118979 |
> > > > | Last_query_cost | 0.000000 |
> > > > | Max_used_connections | 166 |
> > > > | Not_flushed_delayed_rows | 0 |
> > > > | Open_files | 69 |
> > > > | Open_streams | 0 |
> > > > | Open_tables | 64 |
> > > > | 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 | 24309937 |
> > > > | 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 | 33647849 |
> > > > | Table_locks_waited | 1979 |
> > > > | Tc_log_max_pages_used | 0 |
> > > > | Tc_log_page_size | 0 |
> > > > | Tc_log_page_waits | 0 |
> > > > | Threads_cached | 0 |
> > > > | Threads_connected | 85 |
> > > > | Threads_created | 942288 |
> > > > | Threads_running | 2 |
> > > > | Uptime | 16392 |
> > > > | Uptime_since_flush_status | 24309937 |
> > > > +-----------------------------------+-----------+
> > > >
> > > >
> > > > Best regards,
> > > > Paul
> > > >
> > > >> -----Original Message-----
> > > >> From: opencms-dev-bounces at opencms.org
> > > >> [mailto:opencms-dev-bounces at opencms.org] On Behalf Of
> > > HERNAN - TFSLA
> > > >> Sent: 2. mai 2011 14:19
> > > >> To: opencms-dev at opencms.org
> > > >> Subject: Re: [opencms-dev]
> > > >> MySQLNonTransientConnectionException - too many connections
> > > >>
> > > >>
> > > >> Please post your:
> > > >> * opencms.properties
> > > >> * mysql variables status (show status;)
> > > >> * j/connector version
> > > >>
> > > >> Most likely you have your opencms.properties 'default' and is
> > > >> not getting
> > > >> along with some mysql configuration such as wait_timeout.
> > > >>
> > > >> Regards
> > > >> Hernán.
> > > >>
> > > >>
> > > >> Paul-Inge Flakstad wrote:
> > > >> >
> > > >> > Hi guys,
> > > >> >
> > > >> > We recently launched our primary website on OpenCms (yay!).
> > > >> It is curretly
> > > >> > at ~3000 pageviews a day. Not _that_ much traffic, but
> > > >> every so often (way
> > > >> > too often), it "hangs" - often for as long as a minute or more.
> > > >> >
> > > >> > This is what happens:
> > > >> >
> > > >> >
> > > com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException: Data
> > > >> > source rejected establishment of connection, message from
> > > >> server: "Too
> > > >> > many connections"
> > > >> > at
> > > >> com.mysql.jdbc.SQLError.createSQLException(SQLError.java:921)
> > > >> > at
> > com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1070)
> > > >> > at
> > > >> com.mysql.jdbc.Connection.createNewIO(Connection.java:2748)
> > > >> > at
> > com.mysql.jdbc.Connection.<init>(Connection.java:1553)
> > > >> > at
> > > >> >
> > > >> com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriv
> > > >> er.java:285)
> > > >> > at
> > > >> java.sql.DriverManager.getConnection(DriverManager.java:582)
> > > >> > at
> > > >> java.sql.DriverManager.getConnection(DriverManager.java:185)
> > > >> > at
> > > >> >
> > > >> org.apache.commons.dbcp.DriverManagerConnectionFactory.createC
> > > >> onnection(DriverManagerConnectionFactory.java:65)
> > > >> > at
> > > >> >
> > > >> org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(P
> > > >> oolableConnectionFactory.java:294)
> > > >> > at
> > > >> >
> > > >> org.apache.commons.pool.impl.GenericObjectPool.borrowObject(Ge
> > > >> nericObjectPool.java:1148)
> > > >> > at
> > > >> >
> > > >>
> > >
> > org.apache.commons.dbcp.PoolingDriver.connect(PoolingDriver.java:176)
> > > >> > at
> > > >> java.sql.DriverManager.getConnection(DriverManager.java:582)
> > > >> > at
> > > >> java.sql.DriverManager.getConnection(DriverManager.java:207)
> > > >> > at
> > > >> >
> > > >> org.opencms.db.CmsSqlManager.getConnectionByUrl(CmsSqlManager.
> > > >> java:104)
> > > >> > at
> > > >> >
> > > >> org.opencms.db.generic.CmsSqlManager.getConnection(CmsSqlManag
> > > >> er.java:231)
> > > >> > at
> > > >> >
> > > >> org.opencms.db.generic.CmsVfsDriver.readResource(CmsVfsDriver.
> > > >> java:1931)
> > > >> > ... 75 more
> > > >> >
> > > >> > The exception was not present in the several months of
> > > >> development and
> > > >> > beta testing, so it's no doubt the traffic that's causing
> > > >> it. I've never
> > > >> > seen this before, but then again, I've been working mostly
> > > >> on smaller
> > > >> > sites with much less traffic.
> > > >> >
> > > >> > After learning of the setting in MySQL, I have (just now) set
> > > >> > max_connections to 2048. No max_connections was present in
> > > >> my.cnf from
> > > >> > before, so I'm guessing it was 100 (the default value).
> > > >> >
> > > >> > Will this fix things? Should I do anything else, in order
> > > >> to allow many
> > > >> > concurrent users / avoid this exception?
> > > >> >
> > > >> > Best regards,
> > > >> > Paul
> > > >> >
> > > >> > _______________________________________________
> > > >> > This mail is sent to you from the opencms-dev mailing list
> > > >> > To change your list options, or to unsubscribe from the
> > > >> list, please visit
> > > >> > http://lists.opencms.org/mailman/listinfo/opencms-dev
> > > >> >
> > > >> >
> > > >>
> > > >> --
> > > >> View this message in context:
> > > >> http://old.nabble.com/MySQLNonTransientConnectionException---t
> > > > oo-many-connections-tp31521630p31523002.html
> > > >> Sent from the OpenCMS - Dev mailing list archive at Nabble.com.
> > > >>
> > > >>
> > > >> _______________________________________________
> > > >> This mail is sent to you from the opencms-dev mailing list
> > > >> To change your list options, or to unsubscribe from the list,
> > > >> please visit
> > > >> http://lists.opencms.org/mailman/listinfo/opencms-dev
> > > >
> > > > _______________________________________________
> > > > This mail is sent to you from the opencms-dev mailing list
> > > > To change your list options, or to unsubscribe from the
> > > list, please visit
> > > > http://lists.opencms.org/mailman/listinfo/opencms-dev
> > > >
> > > >
> > >
> > > --
> > > View this message in context:
> > > http://old.nabble.com/MySQLNonTransientConnectionException---t
> > oo-many-connections-tp31521630p31527995.html
> > > Sent from the OpenCMS - Dev mailing list archive at Nabble.com.
> > >
> > >
> > > _______________________________________________
> > > This mail is sent to you from the opencms-dev mailing list
> > > To change your list options, or to unsubscribe from the list,
> > > please visit
> > > http://lists.opencms.org/mailman/listinfo/opencms-dev
> >
> > _______________________________________________
> > This mail is sent to you from the opencms-dev mailing list
> > To change your list options, or to unsubscribe from the list,
> > please visit
> > http://lists.opencms.org/mailman/listinfo/opencms-dev
> >
>
> _______________________________________________
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