<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head profile="http://internetalchemy.org/2003/02/profile">
<link rel="foaf" type="application/rdf+xml" title="FOAF" href="http://www.openlinksw.com/dataspace/uda/about.rdf" />
<link rel="schema.dc" href="http://purl.org/dc/elements/1.1/" />
<meta name="dc.title" content="7. Data Access Interfaces" />
<meta name="dc.subject" content="7. Data Access Interfaces" />
<meta name="dc.creator" content="OpenLink Software Documentation Team ; " />
<meta name="dc.copyright" content="OpenLink Software, 1999 - 2009" />
<link rel="top" href="index.html" title="OpenLink Virtuoso Universal Server: Documentation" />
<link rel="search" href="/doc/adv_search.vspx" title="Search OpenLink Virtuoso Universal Server: Documentation" />
<link rel="parent" href="accessinterfaces.html" title="Chapter Contents" />
<link rel="prev" href="inprocess.html" title="Virtuoso In-Process Client" />
<link rel="next" href="dataccessclientsconfailandbalance.html" title="Virtuoso Data Access Clients Connection Fail over and Load Balancing Support" />
<link rel="shortcut icon" href="../images/misc/favicon.ico" type="image/x-icon" />
<link rel="stylesheet" type="text/css" href="doc.css" />
<link rel="stylesheet" type="text/css" href="/doc/translation.css" />
<title>7. Data Access Interfaces</title>
<meta http-equiv="Content-Type" content="text/xhtml; charset=UTF-8" />
<meta name="author" content="OpenLink Software Documentation Team ; " />
<meta name="copyright" content="OpenLink Software, 1999 - 2009" />
<meta name="keywords" content="" />
<meta name="GENERATOR" content="OpenLink XSLT Team" />
</head>
<body>
<div id="header">
<a name="accintudsockets" />
<img src="../images/misc/logo.jpg" alt="" />
<h1>7. Data Access Interfaces</h1>
</div>
<div id="navbartop">
<div>
<a class="link" href="accessinterfaces.html">Chapter Contents</a> | <a class="link" href="inprocess.html" title="Virtuoso In-Process Client">Prev</a> | <a class="link" href="dataccessclientsconfailandbalance.html" title="Virtuoso Data Access Clients Connection Fail over and Load Balancing Support">Next</a>
</div>
</div>
<div id="currenttoc">
<form method="post" action="/doc/adv_search.vspx">
<div class="search">Keyword Search: <br />
<input type="text" name="q" /> <input type="submit" name="go" value="Go" />
</div>
</form>
<div>
<a href="http://www.openlinksw.com/">www.openlinksw.com</a>
</div>
<div>
<a href="http://docs.openlinksw.com/">docs.openlinksw.com</a>
</div>
<br />
<div>
<a href="index.html">Book Home</a>
</div>
<br />
<div>
<a href="contents.html">Contents</a>
</div>
<div>
<a href="preface.html">Preface</a>
</div>
<br />
<div class="selected">
<a href="accessinterfaces.html">Data Access Interfaces</a>
</div>
<br />
<div>
<a href="virtclientref.html">ADO.Net Data Provider</a>
</div>
<div>
<a href="isql.html">Interactive SQL Utility</a>
</div>
<div>
<a href="odbcimplementation.html">Virtuoso Driver for ODBC</a>
</div>
<div>
<a href="VirtuosoDriverJDBC.html">Virtuoso Driver for JDBC</a>
</div>
<div>
<a href="virtoledb.html">OLE DB Provider for Virtuoso</a>
</div>
<div>
<a href="inprocess.html">Virtuoso In-Process Client</a>
</div>
<div class="selected">
<a href="accintudsockets.html">Unix Domain Socket Connections</a>
</div>
<div>
<a href="dataccessclientsconfailandbalance.html">Virtuoso Data Access Clients Connection Fail over and Load Balancing Support</a>
</div>
<br />
</div>
<div id="text">
<a name="accintudsockets" />
<h2>7.7. Unix Domain Socket Connections</h2>
<p>Client connections to Virtuoso servers running on the same Unix or Linux
server host can benefit from faster connections utilizing Unix Domain Sockets.
This does not apply to Windows platforms.</p>
<p>By default Virtuoso will open a Unix Domain listen socket in addition
to the TCP listen socket. The name of the UD socket will be:</p>
<div>
<pre class="programlisting">
/tmp/virt-<tcp-listen-port>
</pre>
</div>
<p>When a client attempts to connect to the Virtuoso server using the
specific address <span class="computeroutput">localhost</span> it will
first try connecting to the UD socket, failing that it will silently revert
to the TCP socket.</p>
<p>Unix Domain Socket connections only work if
<span class="computeroutput">localhost</span> is explicitly specified or the
host is unspecified which defaults to a localhost connection.
UD socket connections will <strong>not</strong> work to any other address
such as:</p>
<div>
<pre class="programlisting">
virt.mydomain.com:1111
127.0.0.1:1111
</pre>
</div>
<p>regardless of whether that is the localhost or not.</p>
<p>Unix Domain sockets can be disabled using the
<span class="computeroutput">DisableUnixSocket</span> parameter in the
Parameters section of the Virtuoso INI file.</p>
<p>The <a href="">sys_connected_server_address()</a>
function can be used to check the connection type. It will return </p>
<div>
<pre class="programlisting">
/tmp/virt-<tcp-listen-port>
</pre>
</div>
<p>for connections using UD sockets.</p>
<table border="0" width="90%" id="navbarbottom">
<tr>
<td align="left" width="33%">
<a href="inprocess.html" title="Virtuoso In-Process Client">Previous</a>
<br />Virtuoso In-Process Client</td>
<td align="center" width="34%">
<a href="accessinterfaces.html">Chapter Contents</a>
</td>
<td align="right" width="33%">
<a href="dataccessclientsconfailandbalance.html" title="Virtuoso Data Access Clients Connection Fail over and Load Balancing Support">Next</a>
<br />Virtuoso Data Access Clients Connection Fail over and Load Balancing Support</td>
</tr>
</table>
</div>
<div id="footer">
<div>Copyright© 1999 - 2009 OpenLink Software All rights reserved.</div>
<div id="validation">
<a href="http://validator.w3.org/check/referer">
<img src="http://www.w3.org/Icons/valid-xhtml10" alt="Valid XHTML 1.0!" height="31" width="88" />
</a>
<a href="http://jigsaw.w3.org/css-validator/">
<img src="http://jigsaw.w3.org/css-validator/images/vcss" alt="Valid CSS!" height="31" width="88" />
</a>
</div>
</div>
</body>
</html>
distrib
>
Fedora
>
14
>
x86_64
>
media
>
updates
>
by-pkgid
>
71d40963b505df4524269198e237b3e3
>
files
>
53
