<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <HTML ><HEAD ><TITLE >Advanced Configurations</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="FreeTDS User Guide" HREF="index.htm"><LINK REL="PREVIOUS" TITLE="Troubleshooting ODBC connections" HREF="odbcdiagnose.htm"><LINK REL="NEXT" TITLE="Localization and TDS 7.0" HREF="localization.htm"><LINK REL="STYLESHEET" TYPE="text/css" HREF="userguide.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=utf-8"></HEAD ><BODY CLASS="CHAPTER" 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="odbcdiagnose.htm" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="localization.htm" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="CHAPTER" ><H1 ><A NAME="CONFIGS" ></A >Chapter 5. Advanced Configurations</H1 ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT ><A HREF="configs.htm#EMULLE" >Big Endian Clients with Buggy <SPAN CLASS="PRODUCTNAME" >SQL Server</SPAN >s</A ></DT ><DT ><A HREF="localization.htm" >Localization and <ACRONYM CLASS="ACRONYM" >TDS</ACRONYM > 7.0</A ></DT ><DT ><A HREF="domains.htm" >Domain Logins</A ></DT ><DT ><A HREF="kerberos.htm" >Kerberos Support</A ></DT ><DT ><A HREF="uothread.htm" >Threading in unixODBC</A ></DT ><DT ><A HREF="appendmode.htm" >Appending Dump Files</A ></DT ><DT ><A HREF="tdspool.htm" >TDS Connection Pooling</A ></DT ><DT ><A HREF="stunnel.htm" >stunnel HOWTO</A ></DT ></DL ></DIV ><P >This chapter details some advanced configurations that need expanded explanation.</P ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="EMULLE" >Big Endian Clients with Buggy <SPAN CLASS="PRODUCTNAME" >SQL Server</SPAN >s</A ></H1 ><P >Several version of Microsoft SQL server have a bug that affects big endian clients. This includes 7.0 GA and 7.0 SP1. Furthermore, <ACRONYM CLASS="ACRONYM" >TDS</ACRONYM > Protocol version 7.0 is natively little endian. <SPAN CLASS="PRODUCTNAME" >SQL Server 2000</SPAN > is also reported not to work from big endian clients without little endian emulation turned on.</P ><DIV CLASS="NOTE" ><P ></P ><TABLE CLASS="NOTE" WIDTH="100%" BORDER="0" ><TR ><TD WIDTH="25" ALIGN="CENTER" VALIGN="TOP" ><IMG SRC="../images/note.gif" HSPACE="5" ALT="Note"></TD ><TD ALIGN="LEFT" VALIGN="TOP" ><P >The terms <SPAN CLASS="emphasis" ><I CLASS="EMPHASIS" >big endian</I ></SPAN > and <SPAN CLASS="emphasis" ><I CLASS="EMPHASIS" >little endian</I ></SPAN > come originally from Gulliver's Travels. In computer science they refer to the the integer byte-order for a processor. Big endian processors, such as Sparc and PowerPC store the most significant byte in the first memory location of a multi-byte integer. Little endian processors, such as Intel and Alpha do it the other way around. So the 16-bit number 258 would be 0x0102 on big endian and 0x0201 on little endian machines.</P ></TD ></TR ></TABLE ></DIV ><P >In this example we want to force connections to a server named <TT CLASS="LITERAL" >mssql</TT > to emulate a little endian client. We are using protocol version 4.2 here, version 7.0 or above will automatically emulate little endian mode regardless of the <TT CLASS="FILENAME" >freetds.conf</TT > setting. <SPAN CLASS="emphasis" ><I CLASS="EMPHASIS" >You shouldn't use this option, set another protocol version instead (7.0, 7.1 or 7.2)</I ></SPAN >.</P ><DIV CLASS="EXAMPLE" ><A NAME="E.G.LITTLEENDIAN" ></A ><P ><B >Example 5-1. Emulate Little Endian <TT CLASS="FILENAME" >freetds.conf</TT > setting</B ></P ><PRE CLASS="PROGRAMLISTING" > [mssql] host = ntbox.mydomain.com port = 1433 tds version = 4.2 emulate little endian = yes </PRE ></DIV ></DIV ></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="odbcdiagnose.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="localization.htm" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Troubleshooting ODBC connections</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Localization and <ACRONYM CLASS="ACRONYM" >TDS</ACRONYM > 7.0</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
