Got error 127 from storage engine
Hi, Using Linux 9 with mySQL 4.1.11-standard the tables are MyISAM When trying to delete from quit large tables (millions of records) range or records (few thousands) I got the error that there is a problem in the table and we need to do a repair. Then we run the repair table which finished successfully and try to delete again, however this time we got the error Got error 127 from storage engine and the table become corrupted - need to repair it When deleting few records there is no problem However there is no trace to the error in the log file Any Help ? Amir Server parameters 'back_log', '50' 'basedir', '/' 'binlog_cache_size', '32768' 'bulk_insert_buffer_size', '8388608' 'character_set_client', 'utf8' 'character_set_connection', 'utf8' 'character_set_database', 'hebrew' 'character_set_results', 'utf8' 'character_set_server', 'hebrew' 'character_set_system', 'utf8' 'character_sets_dir', '/usr/share/mysql/charsets/' 'collation_connection', 'utf8_general_ci' 'collation_database', 'hebrew_general_ci' 'collation_server', 'hebrew_general_ci' 'concurrent_insert', 'ON' 'connect_timeout', '100' 'datadir', '/var/lib/mysql/' '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' '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', 'NO' 'have_blackhole_engine', 'NO' 'have_compress', 'YES' 'have_crypt', 'YES' 'have_csv', 'NO' 'have_example_engine', 'NO' 'have_geometry', 'YES' 'have_innodb', 'YES' 'have_isam', 'NO' 'have_ndbcluster', 'NO' 'have_openssl', 'NO' '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', '14680064' 'innodb_autoextend_increment', '8' 'innodb_buffer_pool_awe_mem_mb', '0' 'innodb_buffer_pool_size', '1073741824' 'innodb_data_file_path', 'ibdata1:10M:autoextend' 'innodb_data_home_dir', '/var/lib/mysql' 'innodb_fast_shutdown', 'ON' '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_table_locks', 'ON' 'innodb_thread_concurrency', '8' 'interactive_timeout', '100' 'join_buffer_size', '131072' 'key_buffer_size', '8388600' 'key_cache_age_threshold', '300' 'key_cache_block_size', '1024' 'key_cache_division_limit', '100' 'language', '/usr/share/mysql/english/' 'large_files_support', 'ON' 'license', 'GPL' 'local_infile', 'ON' 'locked_in_memory', 'OFF' 'long_query_time', '10' 'low_priority_updates', 'OFF' 'lower_case_file_system', 'OFF' 'lower_case_table_names', '1' 'max_allowed_packet', '1047552' 'max_binlog_cache_size', '4294967295' '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', '4294967295' 'max_length_for_sort_data', '1024' 'max_relay_log_size', '0' 'max_seeks_for_key', '4294967295' 'max_sort_length', '1024' 'max_tmp_tables', '32' 'max_user_connections', '0' 'max_write_lock_count', '4294967295' 'net_buffer_length', '16384' 'net_read_timeout', '30' 'net_retry_count', '10' 'net_write_timeout', '60' 'new', 'OFF' 'old_passwords', 'OFF' 'open_files_limit', '1024' 'pid_file', '/var/lib/mysql/mendelson.lotonet.local.pid' 'port', '3306' 'preload_buffer_size', '32768' 'protocol_version', '10' 'query_alloc_block_size', '8192' 'query_cache_limit', '67108864' 'query_cache_min_res_unit', '4096' 'query_cache_size', '67108864' 'query_cache_type', 'ON' 'query_cache_wlock_invalidate', 'OFF' 'query_prealloc_size', '8192' 'range_alloc_block_size', '2048' 'read_buffer_size', '131072' 'read_only', 'OFF' 'read_rnd_buffer_size', '262144' 'relay_log_purge', 'ON' 'relay_log_space_limit', '0' 'rpl_recovery_rank', '0' 'secure_auth', 'OFF' 'server_id', '0' 'skip_external_locking', 'ON' 'skip_networking', 'OFF' 'skip_show_database', 'OFF' 'slave_net_timeout', '3600' 'slave_transaction_retries', '0' 'slow_launch_time', '2' 'socket', '/var/lib/mysql/mysql.sock' 'sort_buffer_size', '2097144' 'sql_mode', '' 'storage_engine', 'MyISAM' 'sql_notes', 'OFF' 'sql_warnings', 'OFF' 'table_cache', '64' 'table_type', 'MyISAM' 'thread_cache_size', '0' 'thread_stack', '131072'
Lost connection to MySQL server during query - on long queries
Hello, Each time we run long queries (over around 5 seconds) the mySQL server fails and restarts (you can see it in the error log that starts with Database page corruption on disk or a fail.. and then there is a dump...) and the query return with Lost connection to MySQL server during query... Using Linux 9 with mySQL 4.1.11-standard the tables are InnoDB The error is happening from everywhere: mysql command line, Query browser, from local and remote computers, running selects, insert and even check table, EMS client . Java (see below the log) The problem is probably not in the network parameters, see list of the variables below The database is quit big around 5 GB After the error the server restart automatically and continue to run for the short queries We found one place where long queries work - when we run from the query browser the same select * from some big table. However running from the same place check table... reproduce the error !. Again running the same select * from some big table from all the other palaces cause the server to fall Amir Server parameters 'back_log', '50' 'basedir', '/' 'binlog_cache_size', '32768' 'bulk_insert_buffer_size', '8388608' 'character_set_client', 'utf8' 'character_set_connection', 'utf8' 'character_set_database', 'hebrew' 'character_set_results', 'utf8' 'character_set_server', 'hebrew' 'character_set_system', 'utf8' 'character_sets_dir', '/usr/share/mysql/charsets/' 'collation_connection', 'utf8_general_ci' 'collation_database', 'hebrew_general_ci' 'collation_server', 'hebrew_general_ci' 'concurrent_insert', 'ON' 'connect_timeout', '100' 'datadir', '/var/lib/mysql/' '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' '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', 'NO' 'have_blackhole_engine', 'NO' 'have_compress', 'YES' 'have_crypt', 'YES' 'have_csv', 'NO' 'have_example_engine', 'NO' 'have_geometry', 'YES' 'have_innodb', 'YES' 'have_isam', 'NO' 'have_ndbcluster', 'NO' 'have_openssl', 'NO' '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', '14680064' 'innodb_autoextend_increment', '8' 'innodb_buffer_pool_awe_mem_mb', '0' 'innodb_buffer_pool_size', '1073741824' 'innodb_data_file_path', 'ibdata1:10M:autoextend' 'innodb_data_home_dir', '/var/lib/mysql' 'innodb_fast_shutdown', 'ON' '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_table_locks', 'ON' 'innodb_thread_concurrency', '8' 'interactive_timeout', '100' 'join_buffer_size', '131072' 'key_buffer_size', '8388600' 'key_cache_age_threshold', '300' 'key_cache_block_size', '1024' 'key_cache_division_limit', '100' 'language', '/usr/share/mysql/english/' 'large_files_support', 'ON' 'license', 'GPL' 'local_infile', 'ON' 'locked_in_memory', 'OFF' 'long_query_time', '10' 'low_priority_updates', 'OFF' 'lower_case_file_system', 'OFF' 'lower_case_table_names', '1' 'max_allowed_packet', '1047552' 'max_binlog_cache_size', '4294967295' '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', '4294967295' 'max_length_for_sort_data', '1024' 'max_relay_log_size', '0' 'max_seeks_for_key', '4294967295' 'max_sort_length', '1024' 'max_tmp_tables', '32' 'max_user_connections', '0' 'max_write_lock_count', '4294967295' 'net_buffer_length', '16384' 'net_read_timeout', '30' 'net_retry_count', '10' 'net_write_timeout', '60' 'new', 'OFF' 'old_passwords', 'OFF' 'open_files_limit', '1024' 'pid_file', '/var/lib/mysql/mendelson.lotonet.local.pid' 'port', '3306' 'preload_buffer_size', '32768' 'protocol_version', '10' 'query_alloc_block_size', '8192' 'query_cache_limit', '67108864' 'query_cache_min_res_unit', '4096' 'query_cache_size', '67108864' 'query_cache_type', 'ON' 'query_cache_wlock_invalidate', 'OFF' 'query_prealloc_size', '8192' 'range_alloc_block_size', '2048' 'read_buffer_size', '131072' 'read_only', 'OFF' 'read_rnd_buffer_size', '262144' 'relay_log_purge',
Re: Lost connection to MySQL server during query problem
Hi, Yes the server dies during the queries from JDBC. Regarding the client parameters, what if the client doesn't have mySQL installed? Amir Hello. Does SHOW STATUS executed from JDBC client return increased values of this parameters? Could your server die during queries from JDBC (check the error log)? Sometimes you should increase interactive_timeout as well. A lot of variables usually could be changed using SET statement. See: http://dev.mysql.com/doc/mysql/en/system-variables.html Sometimes when querying mySQL 4.1.11 on Linux machine I get the error Lost connection to MySQL server during query. Here are the symptoms 1.When running the query from the server it returns OK 2.When running the query from another machine using the mySQL query browser it returns OK 3.When running the query from another machine from Java using mySQL JDBC it fails with Lost connection to... 4.When running the query from another machine using software like EMS it fails with Lost connection to... 5.The error is always after 4.7 seconds and only in heavy queries (not only SELECT, even DELETES ) The problem is probably not in the communication parameters, like max_allowed_packet or connection_timeout on the server because I increased then Does anyone know how can I control those parameters from JDBC? Amir Shay [EMAIL PROTECTED] wrote: -- For technical support contracts, goto https://order.mysql.com/?ref=ensita This email is sponsored by Ensita.NET http://www.ensita.net/ __ ___ ___ __ / |/ /_ __/ __/ __ \/ /Gleb Paharenko / /|_/ / // /\ \/ /_/ / /__ [EMAIL PROTECTED] /_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.NET ___/ www.mysql.com
Lost connection to MySQL server during query problem
Hi, Sometimes when querying mySQL 4.1.11 on Linux machine I get the error Lost connection to MySQL server during query. Here are the symptoms 1. When running the query from the server it returns OK 2. When running the query from another machine using the mySQL query browser it returns OK 3. When running the query from another machine from Java using mySQL JDBC it fails with Lost connection to... 4. When running the query from another machine using software like EMS it fails with Lost connection to... 5. The error is always after 4.7 seconds and only in heavy queries (not only SELECT, even DELETES ) The problem is probably not in the communication parameters, like max_allowed_packet or connection_timeout on the server because I increased then Does anyone know how can I control those parameters from JDBC? Amir
