MySQL is a fast, multi-threaded, multi-user open source SQL database server.

The MySQL database is released under the GNU General Public License (GPL). MySQL can be used for free when you are not distributing any part of the MySQL system. For example: If you run a commercial web site using the MySQL Database Software as long as MySQL is not distributed.

Please read the MySQL manual for situations where a commercial license is needed.

More information about MySQL can be found at:

MySQL online manual can be found at:

The latest MySQL version can be downloaded from:

Installing MySQL 5.1.


Operating system used
Windows Vista Home Premium SP 1

Software prerequisites

  1. If you use Windows Vista, disable the User Account Control feature.

  2. Check if port 3306 is not used by another application. To check if a port is already in use open a DOS box and type command:

    netstat -a -b

    Show all listening ports

    Note: If port 3306 is used, you must solve this problem first.

  3. Check if servicename MySQL51 does not exist.
    Select: Start | Control Panel, double click "Administrative Tools" and double click "Services".

    MySQL51 service

    Note: If servicename MySQL51 exist, you must solve this problem first.

  4. Download mysql-essential-5.1.31-win32.msi (The Essentials Package)

  5. Double click mysql-essential-5.1.31-win32.msi and press Next button.

    MySQL 5.1 setup

  6. Select setup type "Custom" and press Next button.

    MySQL 5.1 setup type

  7. Change the MySQL destination folder, e.g.: C:\Tools\mysql and press Next button.

    MySQL 5.1 change location

  8. The wizard is ready to begin installation, press Install button.

    MySQL 5.1 ready to install

  9. When the wizard is finished, press the Next button twice.

    MySQL 5.1 enterprise

  10. Check the box "Configure the MySQL Server now" and press the Finish button.

    MySQL 5.1 complete

  11. The Configuration Wizard screen is displayed, press the Next button.

    MySQL 5.1 configuration wizard

  12. Select "Detailed Configuration" and press the Next button.

    MySQL 5.1 configuration type

  13. Select "Developer Machine" and press the Next button.

    MySQL 5.1 server type

  14. Select "Mutifunctional Database" and press the Next button.

    MySQL 5.1 database usage

  15. Select the drive and directory where the InnoDB tablespace should be placed and press the Next button.

    MySQL 5.1 database usage

  16. Select the number of concurrent connections and press the Next button.

    MySQL 5.1 connections

  17. Set the networking options and press the Next button.

    MySQL 5.1 networking options

  18. Select option "Best Support For Multilingualism", this option makes UTF8 the default character set.
    Press the Next button.

    MySQL 5.1 default character set

  19. Enable both checkboxes, change the Service Name: "MySQL51" and press the Next button.

    MySQL 5.1 windows options

  20. Set the root password (e.g.: mysecret) for your MySQL server and press the Next button.

    MySQL 5.1 security

  21. Press the Execute button to start the configuration.

    MySQL 5.1 ready to execute

  22. If your firewall blocks port 3306, you will see the message below.

    MySQL 5.1 connection error

    To solve this problem, do the following:
    • Please check your firewall settings (ZoneAlarm, McAfee, etc.) and unblock port 3306.

    • Select Start | All Programs | MySQL | MySQL Server 5.1 | MySQL Server Instance Config Wizard

    • After the "MySQL Server Instance Config Wizard" welcome screen is displayed, press the Next button.

      MySQL 5.1 server instance configuration wizard

    • Select "Remove Instance" and press the Next button.

      MySQL 5.1 remove instance

    • Press Execute button.

      MySQL 5.1 execute remove instance

    • Press Finish button.

      MySQL 5.1 finish remove instance

    • Again, select Start | All Programs | MySQL | MySQL Server 5.1 | MySQL Server Instance Config Wizard
      • Again follow step 11 till 19.

      • In step 20, enable "Modify Security Settings"

        Current root password: is empty
        New root password: mysecret
        Confirm: mysecret

        and press Next button.

        MySQL 5.1 unchcek Modify Security Settings

      • Press Execute button.

        MySQL 5.1 ready to execute

      • Press Finish button.

        MySQL 5.1 execute finished

  23. To check if the MySQL server is running, type:
    C:\Tools\mysql\bin>mysql -uroot -pmysecret test

    You should see:
    Welcome to the MySQL monitor. Commands end with ; or \g.
    Your MySQL connection id is 2
    Server version: 5.1.31-community MySQL Community Server (GPL)

    Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

  24. To display more information, type:

    You should see:

    MySQL 5.1 status

  25. The my.ini file used is located in the C:\Tools\mysql directory. This file looks like:

    # 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 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
    # Guildlines 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.
    # ----------------------------------------------------------------------
    # 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.




    # ----------------------------------------------------------------------
    # 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.

    # The TCP/IP Port the MySQL Server will listen on

    #Path to installation directory. All paths are usually resolved relative to this.

    #Path to the database root
    datadir="C:/ProgramData/MySQL/MySQL Server 5.1/Data/"

    # The default character set that will be used when a new schema or table is
    # created and no character set is defined

    # The default storage engine that will be used when create new tables when

    # Set the SQL mode to strict

    # 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.

    # Query cache is used to cache SELECT results and later return them
    # without actual executing the same query once again. Having the query
    # cache enabled may result in significant speed improvements, if your
    # have a lot of identical queries and rarely changing tables. See the
    # "Qcache_lowmem_prunes" status variable to check if the current value
    # is high enough for your load.
    # Note: In case your tables change very often or if your queries are
    # textually different every time, the query cache may result in a
    # slowdown instead of a performance improvement.

    # 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]

    # 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.

    # 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.)

    #*** 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).

    # 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.

    # 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.

    # Size of the buffer used for doing full table scans of MyISAM tables.
    # Allocated per thread, if a full scan is needed.

    # This buffer is allocated when MySQL needs to rebuild the index in
    # REPAIR, OPTIMZE, ALTER table statements as well as in LOAD DATA INFILE
    # into an empty table. It is allocated per thread so be careful with
    # large settings.

    #*** INNODB Specific options ***

    # 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.

    # Additional memory pool that is used by InnoDB to store metadata
    # information. If InnoDB requires more memory for this purpose it will
    # start to allocate it from the OS. As this is fast enough on most
    # recent operating systems, you normally do not need to change this
    # value. SHOW INNODB STATUS will display the current amount used.

    # 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.

    # 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).

    # 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.

    # 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.

    # 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.

  26. According to the C:\tools\mysql\my.ini file:

    default-character-set=utf8 (twice)

    You can change these settings in this file, for example:

    default-character-set=utf8 (in this example, the character set is not changed)

    Note 1:
    Show information about the MySQL character sets.

    Note 2:
    If you change the my.ini file, you must restart MySQL server:
    • Select: Start | Control Panel | Administrative Tools
    • Right click MySQL51 and select Restart

      MySQL 5.1 restart

  27. After the installation, the system environment variable PATH is changed.
    Check if the following is added:
    PATH = ..;C:\tools\mysql\bin

  28. If you have installed PHP 5.2.8 and PHP 5.2.8 should work with MySQL 5.1, then you must change file c:\Windows\php.ini.
    Change line:


  29. Check if you can create a database mobilefishdb, type:
    mysql> create database mobilefishdb;
    mysql> use mobilefishdb;

  30. Check if you can create a USER table, type:
    create table user (
    userid int auto_increment,
    username varchar(255) not null,
    firstname varchar(255) not null,
    lastname varchar(255) not null,
    title varchar(255) null,
    gender enum('m', 'f') null,
    date_of_birth date null,
    password varchar(255) not null,
    email varchar(255) not null,
    phone varchar(255) null,
    primary key (userid)

  31. Check if you can delete the database mobilefishdb, type:
    mysql> drop database mobilefishdb;
    mysql> quit

  32. The WinMySQLadmin.exe is not installed in the bin directoy. It is no longer supported/distributed.
    Use MySQL GUI Tools Bundle for 5.1 instead. It includes the following products which are also supported for MySQL 5.1:
    • MySQL Administrator 1.2 Generally Available
    • MySQL Query Browser 1.2 Generally Available
    • MySQL Migration Toolkit 1.1 Generally Available