<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Connection attributes</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="FreeTDS User Guide" HREF="index.htm"><LINK REL="UP" TITLE="Preparing ODBC" HREF="prepodbc.htm"><LINK REL="PREVIOUS" TITLE="Preparing ODBC" HREF="prepodbc.htm"><LINK REL="NEXT" TITLE="DSN-less configuration" HREF="dsnless.htm"><LINK REL="STYLESHEET" TYPE="text/css" HREF="userguide.css"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" ><SPAN CLASS="PRODUCTNAME" >FreeTDS</SPAN > User Guide: A Guide to Installing, Configuring, and Running <SPAN CLASS="PRODUCTNAME" >FreeTDS</SPAN ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="prepodbc.htm" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 4. Preparing ODBC</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="dsnless.htm" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="ODBCCONNATTR" >Connection attributes</A ></H1 ><P >The following table defines all possible ODBC connection attributes for the <SPAN CLASS="PRODUCTNAME" >FreeTDS</SPAN > ODBC driver. Which ones you'll need depends on how you set yourself up. They may appear in your connection string, or in <TT CLASS="FILENAME" >odbc.ini</TT >. </P ><P ><DIV CLASS="TABLE" ><A NAME="TAB.CONNECTION.ATTRIBUTES.STRINGONLY" ></A ><P ><B >Table 4-1. Connection attributes used only in connection strings</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><COL><THEAD ><TR ><TH >Name</TH ><TH >Possible Values</TH ><TH >Default</TH ><TH >Meaning</TH ></TR ></THEAD ><TBODY ><TR ><TD ><TT CLASS="LITERAL" >DSN</TT ></TD ><TD >A valid DSN entry</TD ><TD >none</TD ><TD >The <TT CLASS="LITERAL" >DSN</TT > to which <SPAN CLASS="PRODUCTNAME" >FreeTDS</SPAN > should connect. <SPAN CLASS="PRODUCTNAME" >FreeTDS</SPAN > will search <TT CLASS="FILENAME" >odbc.ini</TT > for entry. It lets you specify a connection as for <CODE CLASS="FUNCTION" >SQLConnect</CODE >, but using <CODE CLASS="FUNCTION" >SQLDriverConnect</CODE >. Do not use <TT CLASS="LITERAL" >Servername</TT > and <TT CLASS="LITERAL" >DSN</TT > together. </TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >UID</TT ></TD ><TD >Any valid username</TD ><TD >none</TD ><TD >The username to be used when connecting. To use domain authentication, specify the domain using the format <TT CLASS="REPLACEABLE" ><I >domain\username</I ></TT >.</TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >PWD</TT ></TD ><TD >Any</TD ><TD >empty</TD ><TD >The password to be used when connecting. </TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >WSID</TT ></TD ><TD >Any</TD ><TD >Computer name</TD ><TD >The name of the local computer, sent to server. Can be specified only for a DSN-less connection.</TD ></TR ></TBODY ></TABLE ></DIV > <DIV CLASS="TABLE" ><A NAME="TAB.CONNECTION.ATTRIBUTES.FREETDS.CONF" ></A ><P ><B >Table 4-2. Connection attributes that may appear in <TT CLASS="FILENAME" >odbc.ini</TT ></B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><COL><THEAD ><TR ><TH >Name</TH ><TH >Possible Values</TH ><TH >Default</TH ><TH >Meaning</TH ></TR ></THEAD ><TBODY ><TR ><TD ><TT CLASS="LITERAL" >Servername</TT ></TD ><TD >A valid <TT CLASS="FILENAME" >freetds.conf</TT > server section</TD ><TD >none</TD ><TD >A <TT CLASS="FILENAME" >freetds.conf</TT > servername, not a hostname as known to DNS. If you want to use ODBC-only configuration, use <TT CLASS="LITERAL" >Server</TT > instead.</TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >Server</TT ></TD ><TD >A server name or (ip) address</TD ><TD >none</TD ><TD >Hostname of a server. Used in an ODBC-only configuration. To specify a Microsoft SQL Server instance, use the form <TT CLASS="LITERAL" >server\instance</TT >. </TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >Port</TT ></TD ><TD >Any TCP port</TD ><TD >Depends on the TDS version specified with <B CLASS="COMMAND" >configure</B ></TD ><TD >The TCP port where the dataserver is listening. </TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >TDS_Version</TT ></TD ><TD >Any valid protocol version</TD ><TD >Depends on the TDS version specified with <B CLASS="COMMAND" >configure</B ></TD ><TD >TDS protocol version to use (e.g., 5.0, 7.0).</TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >APP</TT ></TD ><TD >Free form text, up to 30 characters. </TD ><TD >none</TD ><TD >Application name. Identifies the connecting application to the server. </TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >LANGUAGE</TT ></TD ><TD >Any</TD ><TD >us_english</TD ><TD >(Human) language the server should use for error messages.</TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >Address</TT ></TD ><TD >Any</TD ><TD >none</TD ><TD >IP address of the dataserver. Useful if you want to specify a server by address, rather than by name. The format is <TT CLASS="REPLACEABLE" ><I >ip,port</I ></TT > or simply <TT CLASS="REPLACEABLE" ><I >ip</I ></TT > in standard dotted-decimal notation. </TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >Database</TT ></TD ><TD >Any</TD ><TD >none</TD ><TD >Specify which database you want to access. If the database does not exist or the user lacks permission to access it, the connection will fail.</TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >TextSize</TT ></TD ><TD >Any</TD ><TD >DB dependent</TD ><TD >Maximum size returned from server for blobs.</TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >PacketSize</TT ></TD ><TD >Any</TD ><TD >DB dependent</TD ><TD >Size of packets to server. Some users saw some performance gain by increasing this value. Normally you shouldn't set it. </TD ></TR ></TBODY ></TABLE ></DIV ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="prepodbc.htm" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.htm" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="dsnless.htm" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Preparing ODBC</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="prepodbc.htm" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >DSN-less configuration</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
