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  1. #1

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    Where to find or how to create a MySQL my.ini file?

    I installed MySQL on my machine using an .msi file, which did not install the "my.ini". I really have no idea what an "out-of-the-box" my.ini file looks like. Any ideas?

    Thanks,
    Blake

  2. #2
    .NUT jmcilhinney's Avatar
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    Re: Where to find or how to create a MySQL my.ini file?

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  3. #3
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    Re: Where to find or how to create a MySQL my.ini file?

    Here is the TEMPLATE the wizard uses to create my.ini (version 8) so you can also see some of the formulas used, which may be educational.

    ## MySQL Server Instance Configuration File Template
    ## ----------------------------------------------------------------------
    ## Version 1.0.0
    ##
    ## <-- Indicates Template comment. These lines will not be in the output
    ##
    ## Replaceable things must be like:
    ##
    ## # [VARIABLE_NAME]="Formula"
    ## parameter=default value
    ##
    ## For example:
    ##
    ## # [PORT]="port"
    ## port=3306
    ##
    ## Note - In the example, the formula consists of a variable named 'port' which must be defined before processing.
    ##
    ## In addition to the standard max operators (+, -, /, *), the "formula" field supports the following functions:
    ##
    ## rnd(x, y) = Round x to the nearest y
    ## max(x, y) = Max value from x, y
    ## min(x, y) = Min value from x, y
    ##
    ## and named variables.
    ##
    ## For example:
    ##
    ## # [MAX_CONNECTIONS]="max_connections:rnd(max(100,max_connections),1000)"
    ## max_connections=
    ##
    ## ( Note - Uninitialized variables have a value of 0. )
    ##
    ## Finally, there is a special directive named [STATE_CHANGE] that allows for a function to be exectuted at that
    ## point during template processing.
    ##
    ## For example:
    ## # [STATE_CHANGE]="new_variable : 1"
    ##
    ## The following variables must be defined before the formulas are evaluated (otherwise, you get many values set to 0):
    ##
    ## memory - Server Type
    ## Dedicated Server (90% of System Memory), Server (50% of System Memory), All others( rnd(max( 1/12 System Memory, 40*1024*1024), 1024))
    ## myiasm_percentage - Table Type
    ## If main InnoDB, set to 5. Allow userdef.
    ## active_connections - # Connections.
    ## DSS = 20, OLTP = 500, else user_defined.
    ## cpus - Number of CPUS on the machine.
    ##
    # Other default tuning values
    ##
    ## innodb_buffer_pool_size_percentage=2/10
    # [STATE_CHANGE]="over_commit_factor:10"
    ##
    ##
    # MySQL Server Instance Configuration File
    # ----------------------------------------------------------------------
    # Generated by the MySQL Server Instance Configuration Wizard
    #
    #
    # Installation Instructions
    # ----------------------------------------------------------------------
    #
    # On Linux you can copy this file to /etc/my.cnf to set global options,
    # mysql-data-dir/my.cnf to set server-specific options
    # (@localstatedir@ for this installation) or to
    # ~/.my.cnf to set user-specific options.
    #
    # On Windows you should keep this file in the installation directory
    # of your server (e.g. C:\Program Files\MySQL\MySQL Server X.Y). To
    # make sure the server reads the config file use the startup option
    # "--defaults-file".
    #
    # To run the server from the command line, execute this in a
    # command line shell, e.g.
    # mysqld --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini"
    #
    # To install the server as a Windows service manually, execute this in a
    # command line shell, e.g.
    # mysqld --install MySQLXY --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini"
    #
    # And then execute this in a command line shell to start the server, e.g.
    # net start MySQLXY
    #
    #
    # Guidelines for editing this file
    # ----------------------------------------------------------------------
    #
    # In this file, you can use all long options that the program supports.
    # If you want to know the options a program supports, start the program
    # with the "--help" option.
    #
    # More detailed information about the individual options can also be
    # found in the manual.
    #
    # For advice on how to change settings please see
    # http://dev.mysql.com/doc/refman/5.7/...-defaults.html
    #
    #
    # CLIENT SECTION
    # ----------------------------------------------------------------------
    #
    # The following options will be read by MySQL client applications.
    # Note that only client applications shipped by MySQL are guaranteed
    # to read this section. If you want your own MySQL client program to
    # honor these values, you need to specify it as an option during the
    # MySQL client library initialization.
    #
    [client]

    # [CLIENT_PIPE]=""
    # pipe=

    # [CLIENT_SOCKET]="socket"
    # socket=

    # [CLIENT_PORT]="port"
    port=3306

    [mysql]
    no-beep

    # [CLIENT_DEFAULT_CHARACTER_SET]=""
    # default-character-set=


    # SERVER SECTION
    # ----------------------------------------------------------------------
    #
    # The following options will be read by the MySQL Server. Make sure that
    # you have installed the server correctly (see above) so it reads this
    # file.
    #
    # [SERVER_TYPE]="server_type"
    # server_type=
    [mysqld]

    # The next three options are mutually exclusive to SERVER_PORT below.
    # [SERVER_SKIP]=""
    # skip-networking=
    # [SERVER_PIPE]=""
    # enable-named-pipe=
    # [SHARED_MEMORY]=""
    # shared-memory=

    # [SHARED_MEMORY_BASE_NAME]="shared_memory_base_name"
    # shared-memory-base-name=

    # The Pipe the MySQL Server will use
    # [SERVER_SOCKET]="socket"
    # socket=mysql=

    # The TCP/IP Port the MySQL Server will listen on
    # [SERVER_PORT]="port"
    port=3306

    # Path to installation directory. All paths are usually resolved relative to this.
    # [BASE_DIR]="basedir"
    # basedir=

    # Path to the database root
    # [DATA_DIR]="datadir"
    datadir=

    # The default character set that will be used when a new schema or table is
    # created and no character set is defined
    # [SERVER_DEFAULT_CHARACTER_SET]=""
    # character-set-server=

    # The default authentication plugin to be used when connecting to the server
    # [SERVER_DEFAULT_AUTHENTICATION_PLUGIN]="default_authentication_plugin"
    default_authentication_plugin=caching_sha2_password

    # The default storage engine that will be used when create new tables when
    # [DEFAULT_STORAGE_ENGINE]="default_storage_engine"
    default-storage-engine=

    # Set the SQL mode to strict
    # [SQL_MODE]=""
    sql-mode="STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION"

    # General and Slow logging.
    # [LOG_OUT]="log_out"
    log-output=
    # [GEN_QUERY]="gen_query"
    general-log=
    # [GEN_QUERY_FILE]="gen_query_file"
    general_log_file=
    # [SLOW_QUERY]="slow_query"
    slow-query-log=
    # [SLOW_QUERY_FILE]="slow_query_file"
    slow_query_log_file=
    # [LONG_QUERY]="long_query_time"
    long_query_time=

    # Binary Logging.
    # [LOG_BIN]="log_bin"
    log-bin=

    # Error Logging.
    # [LOG_ERR]="log_error"
    log-error=

    # Server Id.
    # [SERVER_ID]="server_id"
    server-id=

    # Specifies the on how table names are stored in the metadata.
    # If set to 0, will throw an error on case-insensitive operative systems
    # If set to 1, table names are stored in lowercase on disk and comparisons are not case sensitive.
    # If set to 2, table names are stored as given but compared in lowercase.
    # This option also applies to database names and table aliases.
    # NOTE: Modify this value after Server initialization won't take effect.
    # [LOWER_CASE_TABLE_NAMES]="lower_case_table_names"
    lower_case_table_names=

    # Secure File Priv.
    # [SECURE_FILE_PRIV]="secure_file_priv"
    # secure-file-priv=

    # The maximum amount of concurrent sessions the MySQL server will
    # allow. One of these connections will be reserved for a user with
    # SUPER privileges to allow the administrator to login even if the
    # connection limit has been reached.
    # [STATE_CHANGE]="max_connections:rnd(min(active_connections*15/10+10,memory/512K),1000)"
    # [MAX_CONNECTIONS]="max_connections:rnd(max(151,max_connections),1000)"
    max_connections=

    # The number of open tables for all threads. Increasing this value
    # increases the number of file descriptors that mysqld requires.
    # Therefore you have to make sure to set the amount of open files
    # allowed to at least 4096 in the variable "open-files-limit" in
    # section [mysqld_safe]
    # [STATE_CHANGE]="buffers_memory:available_memory*7/10"
    # [STATE_CHANGE]="thread_buffers_memory:available_memory*3/10"
    # [STATE_CHANGE]="memory_per_thread:thread_buffers_memory*over_commit_factor/max_connections"
    # [TABLE_OPEN_CACHE]="table_open_cache:2000"
    table_open_cache=

    # Maximum size for internal (in-memory) temporary tables. If a table
    # grows larger than this value, it is automatically converted to disk
    # based table This limitation is for a single table. There can be many
    # of them.
    # [STATE_CHANGE]="buffers_memory:buffers_memory-table_open_cache*8K"
    # [STATE_CHANGE]="big_thread_buffers:memory_per_thread*over_commit_factor"
    # [STATE_CHANGE]="tmp_table_size:max(16M,big_thread_buffers)"
    # [TMP_TABLE_SIZE]="tmp_table_size:min(tmp_table_size,memory*1/10)","USE_BYTES"
    tmp_table_size=

    # How many threads we should keep in a cache for reuse. When a client
    # disconnects, the client's threads are put in the cache if there aren't
    # more than thread_cache_size threads from before. This greatly reduces
    # the amount of thread creations needed if you have a lot of new
    # connections. (Normally this doesn't give a notable performance
    # improvement if you have a good thread implementation.)
    # [THREAD_CACHE_SIZE]="thread_cache_size:min(100,(rnd(max_connections/100,1)+8))"
    thread_cache_size=

    #*** MyISAM Specific options
    # The maximum size of the temporary file MySQL is allowed to use while
    # recreating the index (during REPAIR, ALTER TABLE or LOAD DATA INFILE.
    # If the file-size would be bigger than this, the index will be created
    # through the key cache (which is slower).
    myisam_max_sort_file_size=100G

    # If the temporary file used for fast index creation would be bigger
    # than using the key cache by the amount specified here, then prefer the
    # key cache method. This is mainly used to force long character keys in
    # large tables to use the slower key cache method to create the index.
    # [STATE_CHANGE]="myisam_sort_buffer_size:max(8M,big_thread_buffers)"
    # [MYISAM_SORT_BUFFER_SIZE]="myisam_sort_buffer_size:min(myisam_sort_buffer_size,memory*2/10)","USE_BYTES"
    myisam_sort_buffer_size=

    # Size of the Key Buffer, used to cache index blocks for MyISAM tables.
    # Do not set it larger than 30% of your available memory, as some memory
    # is also required by the OS to cache rows. Even if you're not using
    # MyISAM tables, you should still set it to 8-64M as it will also be
    # used for internal temporary disk tables.
    # [STATE_CHANGE]="myisam_buffers:buffers_memory*(myisam_percentage/100)"
    # [KEY_BUFFER_SIZE]="key_buffer_size:max(8M,myisam_buffers/2)","USE_BYTES"
    key_buffer_size=

    # Size of the buffer used for doing full table scans of MyISAM tables.
    # Allocated per thread, if a full scan is needed.
    # [STATE_CHANGE]="read_buffer_size:min(64K,memory_per_thread*2/100)"
    # [READ_BUFFER_SIZE]="read_buffer_size:min(read_buffer_size,memory/100)","USE_BYTES"
    read_buffer_size=

    # [STATE_CHANGE]="read_rnd_buffer_size:min(256K,memory_per_thread*4/10)"
    # [READ_RND_BUFFER_SIZE]="read_rnd_buffer_size:min(read_rnd_buffer_size,memory*4/100)","USE_BYTES"
    read_rnd_buffer_size=

    #*** INNODB Specific options ***
    # [INNODB_HOME]=""
    # innodb_data_home_dir=

    # Use this option if you have a MySQL server with InnoDB support enabled
    # but you do not plan to use it. This will save memory and disk space
    # and speed up some things.
    # [SKIP_INNODB]
    # skip-innodb

    # If set to 1, InnoDB will flush (fsync) the transaction logs to the
    # disk at each commit, which offers full ACID behavior. If you are
    # willing to compromise this safety, and you are running small
    # transactions, you may set this to 0 or 2 to reduce disk I/O to the
    # logs. Value 0 means that the log is only written to the log file and
    # the log file flushed to disk approximately once per second. Value 2
    # means the log is written to the log file at each commit, but the log
    # file is only flushed to disk approximately once per second.
    innodb_flush_log_at_trx_commit=1

    # The size of the buffer InnoDB uses for buffering log data. As soon as
    # it is full, InnoDB will have to flush it to disk. As it is flushed
    # once per second anyway, it does not make sense to have it very large
    # (even with long transactions).
    # [STATE_CHANGE]="innodb_buffers:max(innodb_buffers-innodb_additional_mem_pool_size,0)"
    # [STATE_CHANGE]="innodb_log_buffer_size:max(1M,innodb_buffers/100)"
    # [INNODB_LOG_BUFFER_SIZE]="innodb_log_buffer_size:min(16M,innodb_log_buffer_size)","USE_BYTES"
    innodb_log_buffer_size=

    # InnoDB, unlike MyISAM, uses a buffer pool to cache both indexes and
    # row data. The bigger you set this the less disk I/O is needed to
    # access data in tables. On a dedicated database server you may set this
    # parameter up to 80% of the machine physical memory size. Do not set it
    # too large, though, because competition of the physical memory may
    # cause paging in the operating system. Note that on 32bit systems you
    # might be limited to 2-3.5G of user level memory per process, so do not
    # set it too high.
    # [INNODB_BUFFER_POOL_SIZE]="innodb_buffer_pool_size:max(innodb_buffers-innodb_log_buffer_size,8M)","USE_BYTES"
    innodb_buffer_pool_size=

    # Size of each log file in a log group. You should set the combined size
    # of log files to about 25%-100% of your buffer pool size to avoid
    # unneeded buffer pool flush activity on log file overwrite. However,
    # note that a larger logfile size will increase the time needed for the
    # recovery process.
    # [INNODB_LOG_FILE_SIZE]="innodb_log_file_size:48M","USE_BYTES"
    innodb_log_file_size=

    # Number of threads allowed inside the InnoDB kernel. The optimal value
    # depends highly on the application, hardware as well as the OS
    # scheduler properties. A too high value may lead to thread thrashing.
    ## originally formula was innodb_thread_concurrency=<<{:M=8,2*([CPUS]+[DISKS])}>>
    ## but since only one disk will be used in a standard configuration
    ## [DISKS] is replaced by 1
    # [INNODB_THREAD_CONCURRENCY]="innodb_thread_concurrency:max(8,2*cpus+1)"
    innodb_thread_concurrency=

    # The increment size (in MB) for extending the size of an auto-extend InnoDB system tablespace file when it becomes full.
    # [INNODB_AUTOEXTEND_INCREMENT]="innodb_autoextend_increment:64"
    innodb_autoextend_increment=

    # The number of regions that the InnoDB buffer pool is divided into.
    # For systems with buffer pools in the multi-gigabyte range, dividing the buffer pool into separate instances can improve concurrency,
    # by reducing contention as different threads read and write to cached pages.
    # [STATE_CHANGE]="innodb_buffer_pool_instances:rnd(innodb_buffer_pool_size/134217728,1)"
    # [INNODB_BUFFER_POOL_INSTANCES]="innodb_buffer_pool_instances:max((innodb_buffer_pool_instances*bitedness), 8)"
    innodb_buffer_pool_instances=

    # Determines the number of threads that can enter InnoDB concurrently.
    # [INNODB_CONCURRENCY_TICKETS]="innodb_concurrency_tickets:5000"
    innodb_concurrency_tickets=

    # Specifies how long in milliseconds (ms) a block inserted into the old sublist must stay there after its first access before
    # it can be moved to the new sublist.
    # [INNODB_OLD_BLOCKS_TIME]="innodb_old_blocks_time:1000"
    innodb_old_blocks_time=

    # It specifies the maximum number of .ibd files that MySQL can keep open at one time. The minimum value is 10.
    # [INNODB_OPEN_FILES]="innodb_open_files:max(300,(table_open_cache*innodb_file_per_table))"
    innodb_open_files=

    # When this variable is enabled, InnoDB updates statistics during metadata statements.
    # [INNODB_STATS_ON_METADATA]="innodb_stats_on_metadata:0"
    innodb_stats_on_metadata=

    # When innodb_file_per_table is enabled (the default in 5.6.6 and higher), InnoDB stores the data and indexes for each newly created table
    # in a separate .ibd file, rather than in the system tablespace.
    # [INNODB_FILE_PER_TABLE]="innodb_file_per_table:1"
    innodb_file_per_table=

    # Use the following list of values: 0 for crc32, 1 for strict_crc32, 2 for innodb, 3 for strict_innodb, 4 for none, 5 for strict_none.
    # [INNODB_CHECKSUM_ALGORITHM]="innodb_checksum_algorithm:0"
    innodb_checksum_algorithm=

    # The number of outstanding connection requests MySQL can have.
    # This option is useful when the main MySQL thread gets many connection requests in a very short time.
    # It then takes some time (although very little) for the main thread to check the connection and start a new thread.
    # The back_log value indicates how many requests can be stacked during this short time before MySQL momentarily
    # stops answering new requests.
    # You need to increase this only if you expect a large number of connections in a short period of time.
    # [BACK_LOG]="back_log:min(900,(rnd(max_connections/5,1)+50))"
    back_log=

    # If this is set to a nonzero value, all tables are closed every flush_time seconds to free up resources and
    # synchronize unflushed data to disk.
    # This option is best used only on systems with minimal resources.
    # [FLUSH_TIME]="flush_time:0"
    flush_time=

    # The minimum size of the buffer that is used for plain index scans, range index scans, and joins that do not use
    # indexes and thus perform full table scans.
    # [JOIN_BUFFER_SIZE]="join_buffer_size:256K","USE_BYTES"
    join_buffer_size=

    # The maximum size of one packet or any generated or intermediate string, or any parameter sent by the
    # mysql_stmt_send_long_data() C API function.
    # [MAX_ALLOWED_PACKET]="max_allowed_packet:4M","USE_BYTES"
    max_allowed_packet=

    # If more than this many successive connection requests from a host are interrupted without a successful connection,
    # the server blocks that host from performing further connections.
    # [MAX_CONNECT_ERRORS]="max_connect_errors:100"
    max_connect_errors=

    # Changes the number of file descriptors available to mysqld.
    # You should try increasing the value of this option if mysqld gives you the error "Too many open files".
    # [OPEN_FILES_LIMIT]="open_files_limit:10+max_connections+table_open_cache*2"
    open_files_limit=

    # If you see many sort_merge_passes per second in SHOW GLOBAL STATUS output, you can consider increasing the
    # sort_buffer_size value to speed up ORDER BY or GROUP BY operations that cannot be improved with query optimization
    # or improved indexing.
    # [SORT_BUFFER_SIZE]="sort_buffer_size:256K","USE_BYTES"
    sort_buffer_size=

    # The number of table definitions (from .frm files) that can be stored in the definition cache.
    # If you use a large number of tables, you can create a large table definition cache to speed up opening of tables.
    # The table definition cache takes less space and does not use file descriptors, unlike the normal table cache.
    # The minimum and default values are both 400.
    # [TABLE_DEFINITION_CACHE]="table_definition_cache:min(2000,(rnd(table_open_cache/2,1)+400))"
    table_definition_cache=

    # Specify the maximum size of a row-based binary log event, in bytes.
    # Rows are grouped into events smaller than this size if possible. The value should be a multiple of 256.
    # [BINLOG_ROW_EVENT_MAX_SIZE]="binlog_row_event_max_size:8192","USE_BYTES"
    binlog_row_event_max_size=

    # If the value of this variable is greater than 0, a replication slave synchronizes its master.info file to disk.
    # (using fdatasync()) after every sync_master_info events.
    # [SYNC_MASTER_INFO]="sync_master_info:10000"
    sync_master_info=

    # If the value of this variable is greater than 0, the MySQL server synchronizes its relay log to disk.
    # (using fdatasync()) after every sync_relay_log writes to the relay log.
    # [SYNC_RELAY_LOG]="sync_relay_log:10000"
    sync_relay_log=

    # If the value of this variable is greater than 0, a replication slave synchronizes its relay-log.info file to disk.
    # (using fdatasync()) after every sync_relay_log_info transactions.
    # [SYNC_RELAY_LOG_INFO]="sync_relay_log_info:10000"
    sync_relay_log_info=

    # Load mysql plugins at start."plugin_x ; plugin_y".
    # [PLUGIN_LOAD]="plugin_load"
    plugin_load=

    # The TCP/IP Port the MySQL Server X Protocol will listen on.
    # [LOOSE_MYSQLX_PORT]="loose_mysqlx_port"
    loose_mysqlx_port=

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