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     <h3 class="title">
      <a name="server-configuration-defaults">
      </a>
      7.1.2 Server Configuration Defaults
     </h3>
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  <p>
   The MySQL server has many operating parameters, which you can
      change at server startup using command-line options or
      configuration files (option files). It is also possible to change
      many parameters at runtime. For general instructions on setting
      parameters at startup or runtime, see
   <a class="xref" href="server-options.html" title="7.1.7 Server Command Options">
    Section 7.1.7, “Server Command Options”
   </a>
   , and
   <a class="xref" href="server-system-variables.html" title="7.1.8 Server System Variables">
    Section 7.1.8, “Server System Variables”
   </a>
   .
  </p>
  <p>
   On Windows, MySQL Installer interacts with the user and creates a
      file named
   <code class="filename">
    my.ini
   </code>
   in the base installation
      directory as the default option file.
  </p>
  <div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
   <div class="admon-title">
    Note
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   <p>
    On Windows, the
    <code class="filename">
     .ini
    </code>
    or
    <code class="filename">
     .cnf
    </code>
    option file extension might not be
        displayed.
   </p>
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  <p>
   After completing the installation process, you can edit the
      default option file at any time to modify the parameters used by
      the server. For example, to use a parameter setting in the file
      that is commented with a
   <code class="literal">
    #
   </code>
   character at the
      beginning of the line, remove the
   <code class="literal">
    #
   </code>
   , and modify
      the parameter value if necessary. To disable a setting, either add
      a
   <code class="literal">
    #
   </code>
   to the beginning of the line or remove it.
  </p>
  <p>
   For non-Windows platforms, no default option file is created
      during either the server installation or the data directory
      initialization process. Create your option file by following the
      instructions given in
   <a class="xref" href="option-files.html" title="6.2.2.2 Using Option Files">
    Section 6.2.2.2, “Using Option Files”
   </a>
   . Without an
      option file, the server just starts with its default
      settings—see
   <a class="xref" href="server-configuration-defaults.html" title="7.1.2 Server Configuration Defaults">
    Section 7.1.2, “Server Configuration Defaults”
   </a>
   on how to check those settings.
  </p>
  <p>
   For additional information about option file format and syntax,
      see
   <a class="xref" href="option-files.html" title="6.2.2.2 Using Option Files">
    Section 6.2.2.2, “Using Option Files”
   </a>
   .
  </p>
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