/usr/libexec/mysqld Ver 5.0.45-log for redhat-linux-gnu on x86_64 (Source distribution) Copyright (C) 2000 MySQL AB, by Monty and others This software comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to modify and redistribute it under the GPL license Starts the MySQL database server Usage: /usr/libexec/mysqld [OPTIONS] Default options are read from the following files in the given order: /etc/my.cnf ~/.my.cnf /etc/my.cnf The following groups are read: mysqld server mysqld-5.0 The following options may be given as the first argument: --print-defaults Print the program argument list and exit --no-defaults Don't read default options from any options file --defaults-file=# Only read default options from the given file # --defaults-extra-file=# Read this file after the global files are read -?, --help Display this help and exit. --abort-slave-event-count=# Option used by mysql-test for debugging and testing of replication. --allow-suspicious-udfs Allows use of UDFs consisting of only one symbol xxx() without corresponding xxx_init() or xxx_deinit(). That also means that one can load any function from any library, for example exit() from libc.so -a, --ansi Use ANSI SQL syntax instead of MySQL syntax. This mode will also set transaction isolation level 'serializable'. --auto-increment-increment[=#] Auto-increment columns are incremented by this --auto-increment-offset[=#] Offset added to Auto-increment columns. Used when auto-increment-increment != 1 --automatic-sp-privileges Creating and dropping stored procedures alters ACLs. Disable with --skip-automatic-sp-privileges. -b, --basedir=name Path to installation directory. All paths are usually resolved relative to this. --bdb Enable Berkeley DB (if this version of MySQL supports it). Disable with --skip-bdb (will save memory). --bdb-home=name Berkeley home directory. --bdb-lock-detect=name Berkeley lock detect (DEFAULT, OLDEST, RANDOM or YOUNGEST, # sec). --bdb-logdir=name Berkeley DB log file directory. --bdb-no-recover Don't try to recover Berkeley DB tables on start. --bdb-no-sync This option is deprecated, use --skip-sync-bdb-logs instead --bdb-shared-data Start Berkeley DB in multi-process mode. --bdb-tmpdir=name Berkeley DB tempfile name. --big-tables Allow big result sets by saving all temporary sets on file (Solves most 'table full' errors). --bind-address=name IP address to bind to. --binlog-do-db=name Tells the master it should log updates for the specified database, and exclude all others not explicitly mentioned. --binlog-ignore-db=name Tells the master that updates to the given database should not be logged tothe binary log. --bootstrap Used by mysql installation scripts. --character-set-client-handshake Don't ignore client side character set value sent during handshake. --character-set-filesystem=name Set the filesystem character set. -C, --character-set-server=name Set the default character set. --character-sets-dir=name Directory where character sets are. -r, --chroot=name Chroot mysqld daemon during startup. --collation-server=name Set the default collation. --completion-type=# Default completion type. --concurrent-insert[=#] Use concurrent insert with MyISAM. Disable with --concurrent-insert=0 --console Write error output on screen; Don't remove the console window on windows. --core-file Write core on errors. -h, --datadir=name Path to the database root. -C, --default-character-set=name Set the default character set (deprecated option, use --character-set-server instead). --default-collation=name Set the default collation (deprecated option, use --collation-server instead). --default-storage-engine=name Set the default storage engine (table type) for tables. --default-table-type=name (deprecated) Use --default-storage-engine. --default-time-zone=name Set the default time zone. --delay-key-write[=name] Type of DELAY_KEY_WRITE. --delay-key-write-for-all-tables Don't flush key buffers between writes for any MyISAM table (Deprecated option, use --delay-key-write=all instead). --des-key-file=name Load keys for des_encrypt() and des_encrypt from given file. --disconnect-slave-event-count=# Option used by mysql-test for debugging and testing of replication. --enable-locking Deprecated option, use --external-locking instead. --enable-pstack Print a symbolic stack trace on failure. --engine-condition-pushdown Push supported query conditions to the storage engine. -T, --exit-info[=#] Used for debugging; Use at your own risk! --external-locking Use system (external) locking (disabled by default). With this option enabled you can run myisamchk to test (not repair) tables while the MySQL server is running. Disable with --skip-external-locking. --flush Flush tables to disk between SQL commands. --gdb Set up signals usable for debugging --large-pages Enable support for large pages. Disable with --skip-large-pages. --init-connect=name Command(s) that are executed for each new connection --init-file=name Read SQL commands from this file at startup. --init-rpl-role=name Set the replication role. --init-slave=name Command(s) that are executed when a slave connects to this master --innodb Enable InnoDB (if this version of MySQL supports it). Disable with --skip-innodb (will save memory). --innodb_checksums Enable InnoDB checksums validation (enabled by default). Disable with --skip-innodb-checksums. --innodb_data_file_path=name Path to individual files and their sizes. --innodb_data_home_dir=name The common part for InnoDB table spaces. --innodb_doublewrite Enable InnoDB doublewrite buffer (enabled by default). Disable with --skip-innodb-doublewrite. --innodb_fast_shutdown[=#] Speeds up the shutdown process of the InnoDB storage engine. Possible values are 0, 1 (faster) or 2 (fastest - crash-like). --innodb_file_per_table Stores each InnoDB table to an .ibd file in the database dir. --innodb_flush_log_at_trx_commit[=#] Set to 0 (write and flush once per second), 1 (write and flush at each commit) or 2 (write at commit, flush once per second). --innodb_flush_method=name With which method to flush data. --innodb_locks_unsafe_for_binlog Force InnoDB not to use next-key locking. Instead use only row-level locking --innodb_log_arch_dir=name Where full logs should be archived. --innodb_log_archive[=#] Set to 1 if you want to have logs archived. --innodb_log_group_home_dir=name Path to InnoDB log files. --innodb_max_dirty_pages_pct=# Percentage of dirty pages allowed in bufferpool. --innodb_max_purge_lag=# Desired maximum length of the purge queue (0 = no limit) --innodb_rollback_on_timeout Roll back the complete transaction on lock wait timeout, for 4.x compatibility (disabled by default) --innodb_status_file Enable SHOW INNODB STATUS output in the innodb_status. file --innodb_support_xa Enable InnoDB support for the XA two-phase commit --innodb_table_locks Enable InnoDB locking in LOCK TABLES --isam Obsolete. ISAM storage engine is no longer supported. -L, --language=name Client error messages in given language. May be given as a full path. --lc-time-names=name Set the language used for the month names and the days of the week. --local-infile Enable/disable LOAD DATA LOCAL INFILE (takes values 1|0). -l, --log[=name] Log connections and queries to file. --log-bin[=name] Log update queries in binary format. Optional (but strongly recommended to avoid replication problems if server's hostname changes) argument should be the chosen location for the binary log files. --log-bin-index=name File that holds the names for last binary log files. --log-bin-trust-function-creators If equal to 0 (the default), then when --log-bin is used, creation of a stored function is allowed only to users having the SUPER privilege and only if this function may not break binary logging. --log-bin-trust-routine-creators (deprecated) Use log-bin-trust-function-creators. --log-error[=name] Error log file. --log-isam[=name] Log all MyISAM changes to file. -0, --log-long-format Log some extra information to update log. Please note that this option is deprecated; see --log-short-format option. --log-queries-not-using-indexes Log queries that are executed without benefit of any index to the slow log if it is open. --log-short-format Don't log extra information to update and slow-query logs. --log-slave-updates Tells the slave to log the updates from the slave thread to the binary log. You will need to turn it on if you plan to daisy-chain the slaves. --log-slow-admin-statements Log slow OPTIMIZE, ANALYZE, ALTER and other administrative statements to the slow log if it is open. --log-slow-queries[=name] Log slow queries to this log file. Defaults logging to hostname-slow.log file. Must be enabled to activate other slow log options. --log-tc=name Path to transaction coordinator log (used for transactions that affect more than one storage engine, when binary log is disabled) --log-tc-size=# Size of transaction coordinator log. --log-update[=name] The update log is deprecated since version 5.0, is replaced by the binary log and this option justs turns on --log-bin instead. -W, --log-warnings[=#] Log some not critical warnings to the log file. --low-priority-updates INSERT/DELETE/UPDATE has lower priority than selects. --master-connect-retry=# The number of seconds the slave thread will sleep before retrying to connect to the master in case the master goes down or the connection is lost. --master-host=name Master hostname or IP address for replication. If not set, the slave thread will not be started. Note that the setting of master-host will be ignored if there exists a valid master.info file. --master-info-file=name The location and name of the file that remembers the master and where the I/O replication thread is in the master's binlogs. --master-password=name The password the slave thread will authenticate with when connecting to the master. If not set, an empty password is assumed.The value in master.info will take precedence if it can be read. --master-port=# The port the master is listening on. If not set, the compiled setting of MYSQL_PORT is assumed. If you have not tinkered with configure options, this should be 3306. The value in master.info will take precedence if it can be read. --master-retry-count=# The number of tries the slave will make to connect to the master before giving up. --master-ssl Enable the slave to connect to the master using SSL. --master-ssl-ca[=name] Master SSL CA file. Only applies if you have enabled master-ssl. --master-ssl-capath[=name] Master SSL CA path. Only applies if you have enabled master-ssl. --master-ssl-cert[=name] Master SSL certificate file name. Only applies if you have enabled master-ssl --master-ssl-cipher[=name] Master SSL cipher. Only applies if you have enabled master-ssl. --master-ssl-key[=name] Master SSL keyfile name. Only applies if you have enabled master-ssl. --master-user=name The username the slave thread will use for authentication when connecting to the master. The user must have FILE privilege. If the master user is not set, user test is assumed. The value in master.info will take precedence if it can be read. --max-binlog-dump-events=# Option used by mysql-test for debugging and testing of replication. --memlock Lock mysqld in memory. --merge Enable Merge storage engine. Disable with --skip-merge. --myisam-recover[=name] Syntax: myisam-recover[=option[,option...]], where option can be DEFAULT, BACKUP, FORCE or QUICK. --ndbcluster Enable NDB Cluster (if this version of MySQL supports it). Disable with --skip-ndbcluster (will save memory). -n, --new Use very new possible 'unsafe' functions. --old-passwords Use old password encryption method (needed for 4.0 and older clients). --old-style-user-limits Enable old-style user limits (before 5.0.3 user resources were counted per each user+host vs. per account) --pid-file=name Pid file used by safe_mysqld. -P, --port=# Port number to use for connection. --port-open-timeout=# Maximum time in seconds to wait for the port to become free. (Default: no wait) --profiling_history_size=# Limit of query profiling memory --relay-log=name The location and name to use for relay logs. --relay-log-index=name The location and name to use for the file that keeps a list of the last relay logs. --relay-log-info-file=name The location and name of the file that remembers where the SQL replication thread is in the relay logs. --replicate-do-db=name Tells the slave thread to restrict replication to the specified database. To specify more than one database, use the directive multiple times, once for each database. Note that this will only work if you do not use cross-database queries such as UPDATE some_db.some_table SET foo='bar' while having selected a different or no database. If you need cross database updates to work, make sure you have 3.23.28 or later, and use replicate-wild-do-table=db_name.%. --replicate-do-table=name Tells the slave thread to restrict replication to the specified table. To specify more than one table, use the directive multiple times, once for each table. This will work for cross-database updates, in contrast to replicate-do-db. --replicate-ignore-db=name Tells the slave thread to not replicate to the specified database. To specify more than one database to ignore, use the directive multiple times, once for each database. This option will not work if you use cross database updates. If you need cross database updates to work, make sure you have 3.23.28 or later, and use replicate-wild-ignore-table=db_name.%. --replicate-ignore-table=name Tells the slave thread to not replicate to the specified table. To specify more than one table to ignore, use the directive multiple times, once for each table. This will work for cross-datbase updates, in contrast to replicate-ignore-db. --replicate-rewrite-db=name Updates to a database with a different name than the original. Example: replicate-rewrite-db=master_db_name->slave_db_name. --replicate-same-server-id In replication, if set to 1, do not skip events having our server id. Default value is 0 (to break infinite loops in circular replication). Can't be set to 1 if --log-slave-updates is used. --replicate-wild-do-table=name Tells the slave thread to restrict replication to the tables that match the specified wildcard pattern. To specify more than one table, use the directive multiple times, once for each table. This will work for cross-database updates. Example: replicate-wild-do-table=foo%.bar% will replicate only updates to tables in all databases that start with foo and whose table names start with bar. --replicate-wild-ignore-table=name Tells the slave thread to not replicate to the tables that match the given wildcard pattern. To specify more than one table to ignore, use the directive multiple times, once for each table. This will work for cross-database updates. Example: replicate-wild-ignore-table=foo%.bar% will not do updates to tables in databases that start with foo and whose table names start with bar. --report-host=name Hostname or IP of the slave to be reported to to the master during slave registration. Will appear in the output of SHOW SLAVE HOSTS. Leave unset if you do not want the slave to register itself with the master. Note that it is not sufficient for the master to simply read the IP of the slave off the socket once the slave connects. Due to NAT and other routing issues, that IP may not be valid for connecting to the slave from the master or other hosts. --report-password=name Undocumented. --report-port=# Port for connecting to slave reported to the master during slave registration. Set it only if the slave is listening on a non-default port or if you have a special tunnel from the master or other clients to the slave. If not sure, leave this option unset. --report-user=name Undocumented. --rpl-recovery-rank=# Undocumented. --safe-mode Skip some optimize stages (for testing). --safe-show-database Deprecated option; use GRANT SHOW DATABASES instead... --safe-user-create Don't allow new user creation by the user who has no write privileges to the mysql.user table. --safemalloc-mem-limit=# Simulate memory shortage when compiled with the --with-debug=full option. --secure-auth Disallow authentication for accounts that have old (pre-4.1) passwords. --secure-file-priv=name Limit LOAD DATA, SELECT ... OUTFILE, and LOAD_FILE() to files within specified directory --server-id=# Uniquely identifies the server instance in the community of replication partners. -O, --set-variable=name Change the value of a variable. Please note that this option is deprecated;you can set variables directly with --variable-name=value. --show-slave-auth-info Show user and password in SHOW SLAVE HOSTS on this master --skip-grant-tables Start without grant tables. This gives all users FULL ACCESS to all tables! --skip-host-cache Don't cache host names. --skip-locking Deprecated option, use --skip-external-locking instead. --skip-name-resolve Don't resolve hostnames. All hostnames are IP's or 'localhost'. --skip-networking Don't allow connection with TCP/IP. --skip-new Don't use new, possible wrong routines. --skip-show-database Don't allow 'SHOW DATABASE' commands. --skip-slave-start If set, slave is not autostarted. --skip-stack-trace Don't print a stack trace on failure. --skip-symlink Don't allow symlinking of tables. Deprecated option. Use --skip-symbolic-links instead. --skip-thread-priority Don't give threads different priorities. --slave-load-tmpdir=name The location where the slave should put its temporary files when replicating a LOAD DATA INFILE command. --slave-skip-errors=name Tells the slave thread to continue replication when a query returns an error from the provided list. --socket=name Socket file to use for connection. --sporadic-binlog-dump-fail Option used by mysql-test for debugging and testing of replication. --sql-bin-update-same=# The update log is deprecated since version 5.0, is replaced by the binary log and this option does nothing anymore. --sql-mode=name Syntax: sql-mode=option[,option[,option...]] where option can be one of: REAL_AS_FLOAT, PIPES_AS_CONCAT, ANSI_QUOTES, IGNORE_SPACE, ONLY_FULL_GROUP_BY, NO_UNSIGNED_SUBTRACTION. --ssl Enable SSL for connection (automatically enabled with other flags). Disable with --skip-ssl. --ssl-ca=name CA file in PEM format (check OpenSSL docs, implies --ssl). --ssl-capath=name CA directory (check OpenSSL docs, implies --ssl). --ssl-cert=name X509 cert in PEM format (implies --ssl). --ssl-cipher=name SSL cipher to use (implies --ssl). --ssl-key=name X509 key in PEM format (implies --ssl). -s, --symbolic-links Enable symbolic link support. --sysdate-is-now Non-default option to alias SYSDATE() to NOW() to make it safe-replicable. Since 5.0, SYSDATE() returns a `dynamic' value different for different invocations, even within the same statement. --tc-heuristic-recover=name Decision to use in heuristic recover process. Possible values are COMMIT or ROLLBACK. --temp-pool Using this option will cause most temporary files created to use a small set of names, rather than a unique name for each new file. --timed_mutexes Specify whether to time mutexes (only InnoDB mutexes are currently supported) -t, --tmpdir=name Path for temporary files. Several paths may be specified, separated by a colon (:), in this case they are used in a round-robin fashion. --transaction-isolation=name Default transaction isolation level. -s, --use-symbolic-links Enable symbolic link support. Deprecated option; use --symbolic-links instead. -u, --user=name Run mysqld daemon as user. -v, --verbose Used with --help option for detailed help -V, --version Output version information and exit. -W, --warnings[=#] Deprecated; use --log-warnings instead. --back_log=# The number of outstanding connection requests MySQL can have. This comes into play when the main MySQL thread gets very many connection requests in a very short time. --bdb_cache_size=# The buffer that is allocated to cache index and rows for BDB tables. --bdb_lock_max=# Synonym for bdb_max_lock. --bdb_log_buffer_size=# The buffer that is allocated to cache index and rows for BDB tables. --bdb_max_lock=# The maximum number of locks you can have active on a BDB table. --binlog_cache_size=# The size of the cache to hold the SQL statements for the binary log during a transaction. If you often use big, multi-statement transactions you can increase this to get more performance. --bulk_insert_buffer_size=# Size of tree cache used in bulk insert optimisation. Note that this is a limit per thread! --connect_timeout=# The number of seconds the mysqld server is waiting for a connect packet before responding with 'Bad handshake'. --date_format=name The DATE format (For future). --datetime_format=name The DATETIME/TIMESTAMP format (for future). --default_week_format=# The default week format used by WEEK() functions. --delayed_insert_limit=# After inserting delayed_insert_limit rows, the INSERT DELAYED handler will check if there are any SELECT statements pending. If so, it allows these to execute before continuing. --delayed_insert_timeout=# How long a INSERT DELAYED thread should wait for INSERT statements before terminating. --delayed_queue_size=# What size queue (in rows) should be allocated for handling INSERT DELAYED. If the queue becomes full, any client that does INSERT DELAYED will wait until there is room in the queue again. --div_precision_increment=# Precision of the result of '/' operator will be increased on that value. --expire_logs_days=# If non-zero, binary logs will be purged after expire_logs_days days; possible purges happen at startup and at binary log rotation. --flush_time=# A dedicated thread is created to flush all tables at the given interval. --ft_boolean_syntax=name List of operators for MATCH ... AGAINST ( ... IN BOOLEAN MODE) --ft_max_word_len=# The maximum length of the word to be included in a FULLTEXT index. Note: FULLTEXT indexes must be rebuilt after changing this variable. --ft_min_word_len=# The minimum length of the word to be included in a FULLTEXT index. Note: FULLTEXT indexes must be rebuilt after changing this variable. --ft_query_expansion_limit=# Number of best matches to use for query expansion --ft_stopword_file=name Use stopwords from this file instead of built-in list. --group_concat_max_len=# The maximum length of the result of function group_concat. --innodb_additional_mem_pool_size=# Size of a memory pool InnoDB uses to store data dictionary information and other internal data structures. --innodb_autoextend_increment=# Data file autoextend increment in megabytes --innodb_buffer_pool_awe_mem_mb=# If Windows AWE is used, the size of InnoDB buffer pool allocated from the AWE memory. --innodb_buffer_pool_size=# The size of the memory buffer InnoDB uses to cache data and indexes of its tables. --innodb_commit_concurrency=# Helps in performance tuning in heavily concurrent environments. --innodb_concurrency_tickets=# Number of times a thread is allowed to enter InnoDB within the same SQL query after it has once got the ticket --innodb_file_io_threads=# Number of file I/O threads in InnoDB. --innodb_force_recovery=# Helps to save your data in case the disk image of the database becomes corrupt. --innodb_lock_wait_timeout=# Timeout in seconds an InnoDB transaction may wait for a lock before being rolled back. --innodb_log_buffer_size=# The size of the buffer which InnoDB uses to write log to the log files on disk. --innodb_log_file_size=# Size of each log file in a log group. --innodb_log_files_in_group=# Number of log files in the log group. InnoDB writes to the files in a circular fashion. Value 3 is recommended here. --innodb_mirrored_log_groups=# Number of identical copies of log groups we keep for the database. Currently this should be set to 1. --innodb_open_files=# How many files at the maximum InnoDB keeps open at the same time. --innodb_sync_spin_loops=# Count of spin-loop rounds in InnoDB mutexes --innodb_thread_concurrency=# Helps in performance tuning in heavily concurrent environments. Sets the maximum number of threads allowed inside InnoDB. Value 0 will disable the thread throttling. --innodb_thread_sleep_delay=# Time of innodb thread sleeping before joining InnoDB queue (usec). Value 0 disable a sleep --interactive_timeout=# The number of seconds the server waits for activity on an interactive connection before closing it. --join_buffer_size=# The size of the buffer that is used for full joins. --key_buffer_size=# The size of the buffer used for index blocks for MyISAM tables. Increase this to get better index handling (for all reads and multiple writes) to as much as you can afford; 64M on a 256M machine that mainly runs MySQL is quite common. --key_cache_age_threshold=# This characterizes the number of hits a hot block has to be untouched until it is considered aged enough to be downgraded to a warm block. This specifies the percentage ratio of that number of hits to the total number of blocks in key cache --key_cache_block_size=# The default size of key cache blocks --key_cache_division_limit=# The minimum percentage of warm blocks in key cache --long_query_time=# Log all queries that have taken more than long_query_time seconds to execute to file. --lower_case_table_names[=#] If set to 1 table names are stored in lowercase on disk and table names will be case-insensitive. Should be set to 2 if you are using a case insensitive file system --max_allowed_packet=# Max packetlength to send/receive from to server. --max_binlog_cache_size=# Can be used to restrict the total size used to cache a multi-transaction query. --max_binlog_size=# Binary log will be rotated automatically when the size exceeds this value. Will also apply to relay logs if max_relay_log_size is 0. The minimum value for this variable is 4096. --max_connect_errors=# If there is more than this number of interrupted connections from a host this host will be blocked from further connections. --max_connections=# The number of simultaneous clients allowed. --max_delayed_threads=# Don't start more than this number of threads to handle INSERT DELAYED statements. If set to zero, which means INSERT DELAYED is not used. --max_error_count=# Max number of errors/warnings to store for a statement. --max_heap_table_size=# Don't allow creation of heap tables bigger than this. --max_join_size=# Joins that are probably going to read more than max_join_size records return an error. --max_length_for_sort_data=# Max number of bytes in sorted records. --max_prepared_stmt_count=# Maximum number of prepared statements in the server. --max_relay_log_size=# If non-zero: relay log will be rotated automatically when the size exceeds this value; if zero (the default): when the size exceeds max_binlog_size. 0 excepted, the minimum value for this variable is 4096. --max_seeks_for_key=# Limit assumed max number of seeks when looking up rows based on a key --max_sort_length=# The number of bytes to use when sorting BLOB or TEXT values (only the first max_sort_length bytes of each value are used; the rest are ignored). --max_sp_recursion_depth[=#] Maximum stored procedure recursion depth. (discussed with docs). --max_tmp_tables=# Maximum number of temporary tables a client can keep open at a time. --max_user_connections=# The maximum number of active connections for a single user (0 = no limit). --max_write_lock_count=# After this many write locks, allow some read locks to run in between. --multi_range_count=# Number of key ranges to request at once. --myisam_block_size=# Block size to be used for MyISAM index pages. --myisam_data_pointer_size=# Default pointer size to be used for MyISAM tables. --myisam_max_extra_sort_file_size=# Deprecated option --myisam_max_sort_file_size=# Don't use the fast sort index method to created index if the temporary file would get bigger than this. --myisam_repair_threads=# Number of threads to use when repairing MyISAM tables. The value of 1 disables parallel repair. --myisam_sort_buffer_size=# The buffer that is allocated when sorting the index when doing a REPAIR or when creating indexes with CREATE INDEX or ALTER TABLE. --myisam_stats_method=name Specifies how MyISAM index statistics collection code should threat NULLs. Possible values of name are "nulls_unequal" (default behavior for 4.1/5.0), "nulls_equal" (emulate 4.0 behavior), and "nulls_ignored". --net_buffer_length=# Buffer length for TCP/IP and socket communication. --net_read_timeout=# Number of seconds to wait for more data from a connection before aborting the read. --net_retry_count=# If a read on a communication port is interrupted, retry this many times before giving up. --net_write_timeout=# Number of seconds to wait for a block to be written to a connection before aborting the write. --open_files_limit=# If this is not 0, then mysqld will use this value to reserve file descriptors to use with setrlimit(). If this value is 0 then mysqld will reserve max_connections*5 or max_connections + table_cache*2 (whichever is larger) number of files. --optimizer_prune_level[=#] Controls the heuristic(s) applied during query optimization to prune less-promising partial plans from the optimizer search space. Meaning: 0 - do not apply any heuristic, thus perform exhaustive search; 1 - prune plans based on number of retrieved rows. --optimizer_search_depth[=#] Maximum depth of search performed by the query optimizer. Values larger than the number of relations in a query result in better query plans, but take longer to compile a query. Smaller values than the number of tables in a relation result in faster optimization, but may produce very bad query plans. If set to 0, the system will automatically pick a reasonable value; if set to MAX_TABLES+2, the optimizer will switch to the original find_best (used for testing/comparison). --preload_buffer_size=# The size of the buffer that is allocated when preloading indexes --query_alloc_block_size=# Allocation block size for query parsing and execution --query_cache_limit=# Don't cache results that are bigger than this. --query_cache_min_res_unit=# minimal size of unit in wich space for results is allocated (last unit will be trimed after writing all result data. --query_cache_size=# The memory allocated to store results from old queries. --query_cache_type=# 0 = OFF = Don't cache or retrieve results. 1 = ON = Cache all results except SELECT SQL_NO_CACHE ... queries. 2 = DEMAND = Cache only SELECT SQL_CACHE ... queries. --query_cache_wlock_invalidate Invalidate queries in query cache on LOCK for write --query_prealloc_size=# Persistent buffer for query parsing and execution --range_alloc_block_size=# Allocation block size for storing ranges during optimization --read_buffer_size=# Each thread that does a sequential scan allocates a buffer of this size for each table it scans. If you do many sequential scans, you may want to increase this value. --read_only Make all non-temporary tables read-only, with the exception for replication (slave) threads and users with the SUPER privilege --read_rnd_buffer_size=# When reading rows in sorted order after a sort, the rows are read through this buffer to avoid a disk seeks. If not set, then it's set to the value of record_buffer. --record_buffer=# Alias for read_buffer_size --relay_log_purge 0 = do not purge relay logs. 1 = purge them as soon as they are no more needed. --relay_log_space_limit=# Maximum space to use for all relay logs. --slave_compressed_protocol Use compression on master/slave protocol. --slave_net_timeout=# Number of seconds to wait for more data from a master/slave connection before aborting the read. --slave_transaction_retries=# Number of times the slave SQL thread will retry a transaction in case it failed with a deadlock or elapsed lock wait timeout, before giving up and stopping. --slow_launch_time=# If creating the thread takes longer than this value (in seconds), the Slow_launch_threads counter will be incremented. --sort_buffer_size=# Each thread that needs to do a sort allocates a buffer of this size. --sync-bdb-logs Synchronously flush Berkeley DB logs. Enabled by default --sync-binlog=# Synchronously flush binary log to disk after every #th event. Use 0 (default) to disable synchronous flushing. --sync-frm Sync .frm to disk on create. Enabled by default. --table_cache=# The number of open tables for all threads. --table_lock_wait_timeout=# Timeout in seconds to wait for a table level lock before returning an error. Used only if the connection has active cursors. --thread_cache_size=# How many threads we should keep in a cache for reuse. --thread_concurrency=# Permits the application to give the threads system a hint for the desired number of threads that should be run at the same time. --thread_stack=# The stack size for each thread. --time_format=name The TIME format (for future). --tmp_table_size=# If an in-memory temporary table exceeds this size, MySQL will automatically convert it to an on-disk MyISAM table. --transaction_alloc_block_size=# Allocation block size for various transaction-related structures --transaction_prealloc_size=# Persistent buffer for various transaction-related structures --updatable_views_with_limit=# 1 = YES = Don't issue an error message (warning only) if a VIEW without presence of a key of the underlying table is used in queries with a LIMIT clause for updating. 0 = NO = Prohibit update of a VIEW, which does not contain a key of the underlying table and the query uses a LIMIT clause (usually get from GUI tools). --wait_timeout=# The number of seconds the server waits for activity on a connection before closing it. Variables (--variable-name=value) and boolean options {FALSE|TRUE} Value (after reading options) --------------------------------- ----------------------------- help TRUE abort-slave-event-count 0 allow-suspicious-udfs FALSE auto-increment-increment 1 auto-increment-offset 1 automatic-sp-privileges TRUE basedir /usr/ bdb FALSE bdb-home (No default value) bdb-logdir (No default value) bdb-tmpdir (No default value) bind-address (No default value) character-set-client-handshake TRUE character-set-filesystem binary character-set-server latin1 character-sets-dir /usr/share/mysql/charsets/ chroot (No default value) collation-server latin1_swedish_ci completion-type 0 concurrent-insert 1 console FALSE datadir /mnt/data/mysql/ default-character-set latin1 default-collation latin1_swedish_ci default-time-zone (No default value) des-key-file (No default value) disconnect-slave-event-count 0 enable-locking FALSE enable-pstack FALSE engine-condition-pushdown FALSE external-locking FALSE gdb FALSE large-pages FALSE init-connect (No default value) init-file (No default value) init-slave (No default value) innodb TRUE innodb_checksums TRUE innodb_data_home_dir (No default value) innodb_doublewrite TRUE innodb_fast_shutdown 1 innodb_file_per_table TRUE innodb_flush_log_at_trx_commit 2 innodb_flush_method O_DIRECT innodb_locks_unsafe_for_binlog FALSE innodb_log_arch_dir (No default value) innodb_log_group_home_dir (No default value) innodb_max_dirty_pages_pct 90 innodb_max_purge_lag 0 innodb_rollback_on_timeout FALSE innodb_status_file FALSE innodb_support_xa TRUE innodb_table_locks TRUE isam FALSE language /usr/share/mysql/english/ lc-time-names en_US local-infile TRUE log (No default value) log-bin sl1-bin log-bin-index (No default value) log-bin-trust-function-creators FALSE log-bin-trust-routine-creators FALSE log-error log-isam myisam.log log-queries-not-using-indexes FALSE log-short-format FALSE log-slave-updates FALSE log-slow-admin-statements FALSE log-slow-queries (No default value) log-tc tc.log log-tc-size 24576 log-update (No default value) log-warnings 1 low-priority-updates FALSE master-connect-retry 60 master-host (No default value) master-info-file master.info master-password (No default value) master-port 3306 master-retry-count 86400 master-ssl FALSE master-ssl-ca (No default value) master-ssl-capath (No default value) master-ssl-cert (No default value) master-ssl-cipher (No default value) master-ssl-key (No default value) master-user test max-binlog-dump-events 0 memlock FALSE merge TRUE myisam-recover OFF ndbcluster FALSE new FALSE old-passwords TRUE old-style-user-limits FALSE pid-file /mnt/data/mysql/sl1.pid port 3306 port-open-timeout 0 profiling_history_size 15 relay-log (No default value) relay-log-index (No default value) relay-log-info-file relay-log.info replicate-same-server-id FALSE report-host (No default value) report-password (No default value) report-port 3306 report-user (No default value) rpl-recovery-rank 0 safe-user-create FALSE secure-auth FALSE secure-file-priv (No default value) server-id 1 show-slave-auth-info FALSE skip-grant-tables FALSE skip-slave-start FALSE slave-load-tmpdir /tmp/ socket /mnt/data/mysql/mysql.sock sporadic-binlog-dump-fail FALSE sql-mode OFF ssl TRUE ssl-ca /opt/mysql.pdns/.cert/ca-cert.pem ssl-capath (No default value) ssl-cert /opt/mysql.pdns/.cert/server-cert.pem ssl-cipher (No default value) ssl-key /opt/mysql.pdns/.cert/server-key.pem symbolic-links TRUE sysdate-is-now FALSE tc-heuristic-recover (No default value) temp-pool TRUE timed_mutexes FALSE tmpdir (No default value) use-symbolic-links TRUE verbose TRUE warnings 1 back_log 50 bdb_cache_size 8388600 bdb_lock_max 10000 bdb_log_buffer_size 0 bdb_max_lock 10000 binlog_cache_size 32768 bulk_insert_buffer_size 8388608 connect_timeout 5 date_format (No default value) datetime_format (No default value) default_week_format 0 delayed_insert_limit 100 delayed_insert_timeout 300 delayed_queue_size 1000 div_precision_increment 4 expire_logs_days 0 flush_time 0 ft_max_word_len 84 ft_min_word_len 4 ft_query_expansion_limit 20 ft_stopword_file (No default value) group_concat_max_len 1024 innodb_additional_mem_pool_size 1048576 innodb_autoextend_increment 8 innodb_buffer_pool_awe_mem_mb 0 innodb_buffer_pool_size 16777216 innodb_commit_concurrency 0 innodb_concurrency_tickets 500 innodb_file_io_threads 4 innodb_force_recovery 0 innodb_lock_wait_timeout 3 innodb_log_buffer_size 1048576 innodb_log_file_size 67108864 innodb_log_files_in_group 2 innodb_mirrored_log_groups 1 innodb_open_files 300 innodb_sync_spin_loops 20 innodb_thread_concurrency 8 innodb_thread_sleep_delay 10000 interactive_timeout 28800 join_buffer_size 131072 key_buffer_size 8388600 key_cache_age_threshold 300 key_cache_block_size 1024 key_cache_division_limit 100 long_query_time 10 lower_case_table_names 0 max_allowed_packet 1048576 max_binlog_cache_size 18446744073709551615 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_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_block_size 1024 myisam_data_pointer_size 6 myisam_max_extra_sort_file_size 2147483648 myisam_max_sort_file_size 9223372036854775807 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 open_files_limit 0 optimizer_prune_level 1 optimizer_search_depth 62 preload_buffer_size 32768 query_alloc_block_size 8192 query_cache_limit 1048576 query_cache_min_res_unit 4096 query_cache_size 0 query_cache_type 1 query_cache_wlock_invalidate FALSE query_prealloc_size 8192 range_alloc_block_size 2048 read_buffer_size 131072 read_only FALSE read_rnd_buffer_size 262144 record_buffer 131072 relay_log_purge TRUE relay_log_space_limit 0 slave_compressed_protocol FALSE slave_net_timeout 3600 slave_transaction_retries 10 slow_launch_time 2 sort_buffer_size 2097144 sync-bdb-logs TRUE sync-binlog 0 sync-frm TRUE table_cache 64 table_lock_wait_timeout 50 thread_cache_size 0 thread_concurrency 10 thread_stack 262144 time_format (No default value) tmp_table_size 33554432 transaction_alloc_block_size 8192 transaction_prealloc_size 4096 updatable_views_with_limit 1 wait_timeout 28800 To see what values a running MySQL server is using, type 'mysqladmin variables' instead of 'mysqld --verbose --help'.