Gecko [ www.utparral.edu.mx ]

Name	Size	Permission
about.htm	5.13 KB	-rw-r--r--
aboutunicode.htm	6.69 KB	-rw-r--r--
acknowledgments.htm	4.39 KB	-rw-r--r--
advocacy.htm	3.67 KB	-rw-r--r--
ambition.htm	3.52 KB	-rw-r--r--
apireference.htm	4.71 KB	-rw-r--r--
appendmode.htm	4.1 KB	-rw-r--r--
askingforhelp.htm	5.36 KB	-rw-r--r--
build.htm	4.73 KB	-rw-r--r--
choosingtdsprotocol.htm	6.62 KB	-rw-r--r--
config.htm	17.16 KB	-rw-r--r--
configs.htm	4.9 KB	-rw-r--r--
confirminstall.htm	16.33 KB	-rw-r--r--
contrib.htm	5.98 KB	-rw-r--r--
contributors.htm	2.47 KB	-rw-r--r--
ctlib.api.summary.htm	14.88 KB	-rw-r--r--
dblib.api.summary.htm	28.32 KB	-rw-r--r--
domains.htm	6.22 KB	-rw-r--r--
dsnless.htm	5.96 KB	-rw-r--r--
envvar.htm	6.93 KB	-rw-r--r--
freetdsconf.htm	18.39 KB	-rw-r--r--
freetdshistory.htm	4.45 KB	-rw-r--r--
gfdl-10.htm	3.11 KB	-rw-r--r--
gfdl-11.htm	3.32 KB	-rw-r--r--
gfdl-1.htm	5.42 KB	-rw-r--r--
gfdl-2.htm	2.9 KB	-rw-r--r--
gfdl-3.htm	4.18 KB	-rw-r--r--
gfdl-4.htm	7.25 KB	-rw-r--r--
gfdl-5.htm	3.37 KB	-rw-r--r--
gfdl-6.htm	2.83 KB	-rw-r--r--
gfdl-7.htm	3.07 KB	-rw-r--r--
gfdl-8.htm	2.8 KB	-rw-r--r--
gfdl-9.htm	2.6 KB	-rw-r--r--
gfdl.htm	4.46 KB	-rw-r--r--
help.htm	5.31 KB	-rw-r--r--
index.htm	23.65 KB	-rw-r--r--
index.html	23.65 KB	-rw-r--r--
install.htm	5.59 KB	-rw-r--r--
interfacesfile.htm	3.64 KB	-rw-r--r--
interfacesformat.htm	4.71 KB	-rw-r--r--
interfaceslocation.htm	2.45 KB	-rw-r--r--
interfacespurpose.htm	4.83 KB	-rw-r--r--
iso8859.htm	5.31 KB	-rw-r--r--
isolatecause.htm	4.39 KB	-rw-r--r--
kerberos.htm	3.92 KB	-rw-r--r--
light.taper.htm	3.03 KB	-rw-r--r--
linker.conclusion.htm	2.75 KB	-rw-r--r--
linker.how.htm	13.61 KB	-rw-r--r--
linker.library.check.htm	5.31 KB	-rw-r--r--
locales.htm	6.89 KB	-rw-r--r--
localization.htm	11.32 KB	-rw-r--r--
logging.htm	7.35 KB	-rw-r--r--
mailinglist.htm	4.1 KB	-rw-r--r--
name.lookup.htm	4.14 KB	-rw-r--r--
odbc.api.summary.htm	16.65 KB	-rw-r--r--
odbcconnattr.htm	7.31 KB	-rw-r--r--
odbcdiagnose.htm	8.88 KB	-rw-r--r--
odbcinionly.htm	3.47 KB	-rw-r--r--
odbcombo.htm	4.44 KB	-rw-r--r--
osissues.htm	10.13 KB	-rw-r--r--
packages.htm	4.43 KB	-rw-r--r--
pagenodata.htm	5.88 KB	-rw-r--r--
perl.htm	7.36 KB	-rw-r--r--
php.htm	7.73 KB	-rw-r--r--
portoverride.htm	3.86 KB	-rw-r--r--
prepodbc.htm	9.89 KB	-rw-r--r--
programming.htm	2.76 KB	-rw-r--r--
projects.htm	11.26 KB	-rw-r--r--
python.htm	4.01 KB	-rw-r--r--
qt.htm	2.69 KB	-rw-r--r--
rtl.define.library.htm	8.43 KB	-rw-r--r--
rtl.htm	7.22 KB	-rw-r--r--
samplecode.htm	48.19 KB	-rw-r--r--
seemtooslow.htm	4.72 KB	-rw-r--r--
serverthere.htm	6.59 KB	-rw-r--r--
software.htm	5.79 KB	-rw-r--r--
stunnel.htm	4.11 KB	-rw-r--r--
sybsql.htm	4.56 KB	-rw-r--r--
tdshistory.htm	5.16 KB	-rw-r--r--
tdspool.htm	7.72 KB	-rw-r--r--
troubleshooting.htm	10.84 KB	-rw-r--r--
unicodefreetds.htm	4.96 KB	-rw-r--r--
unicodegoodbad.htm	4.99 KB	-rw-r--r--
unicode.htm	4.07 KB	-rw-r--r--
unicodeutf.htm	5.32 KB	-rw-r--r--
uodbc.htm	5.7 KB	-rw-r--r--
uothread.htm	3.19 KB	-rw-r--r--
usefreetds.htm	6.26 KB	-rw-r--r--
userguide.css	295 B	-rw-r--r--
what.htm	7.85 KB	-rw-r--r--

Code Editor : tdspool.htm

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<HTML
><HEAD
><TITLE
>TDS Connection Pooling</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="Advanced Configurations"
HREF="configs.htm"><LINK
REL="PREVIOUS"
TITLE="Appending Dump Files"
HREF="appendmode.htm"><LINK
REL="NEXT"
TITLE="stunnel HOWTO"
HREF="stunnel.htm"><LINK
REL="STYLESHEET"
TYPE="text/css"
HREF="userguide.css"><META
HTTP-EQUIV="Content-Type"
CONTENT="text/html; charset=utf-8"></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="appendmode.htm"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 5. Advanced Configurations</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="stunnel.htm"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="TDSPOOL"
>TDS Connection Pooling</A
></H1
><P
>The Connection Pooling server swims in the <TT
CLASS="FILENAME"
>src/pool</TT
> directory.</P
><P
>The <SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
> connection pool is a server process; it emulates a <SPAN
CLASS="PRODUCTNAME"
>SQL Server</SPAN
>.  Any program that can attach to a real <SPAN
CLASS="PRODUCTNAME"
>SQL Server</SPAN
> may instead elect to attach to the pool server.  The pool in turn connects to the <SPAN
CLASS="PRODUCTNAME"
>SQL Server</SPAN
> and database you specify, and attempts to share these connections.  See the <TT
CLASS="FILENAME"
>src/pool/README</TT
> for a more detailed description of its inner workings.</P
><P
>To configure the pool server, first make sure <SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
> has a working entry for the real <SPAN
CLASS="PRODUCTNAME"
>SQL Server</SPAN
> by connecting to it with <SPAN
CLASS="APPLICATION"
>SQSH</SPAN
> or another program.</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 <SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
> connection pool currently only supports <ACRONYM
CLASS="ACRONYM"
>TDS</ACRONYM
> version 4.2.  <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>This restriction applies to both the client-to-pool and pool-to-server connections!</I
></SPAN
></P
></TD
></TR
></TABLE
></DIV
><P
>After FreeTDS has been installed, you will find an executable named <B
CLASS="COMMAND"
>tdspool</B
> in the <TT
CLASS="FILENAME"
>/usr/local/bin</TT
> directory (or whatever directory was specified with the <B
CLASS="COMMAND"
>configure</B
> <CODE
CLASS="OPTION"
>--with-prefix flag</CODE
> option).</P
><P
>Edit <TT
CLASS="FILENAME"
>pool.conf</TT
> in the <SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
>'s <TT
CLASS="FILENAME"
>etc</TT
> directory.  The <TT
CLASS="FILENAME"
>pool.conf</TT
> file is formatted like <TT
CLASS="FILENAME"
>freetds.conf</TT
>, with a section name in brackets and options for each section in key/value pairs.</P
><P
>Just as in <TT
CLASS="FILENAME"
>freetds.conf</TT
> there are two types of sections, a <TT
CLASS="LITERAL"
>[global]</TT
> section whose options affect all pools, and a section with the name of the pool for pool-specific options.  The following options are supported and may appear in either section.</P
><P
><DIV
CLASS="TABLE"
><A
NAME="TAB.POOL.CONF"
></A
><P
><B
>Table 5-1. pool.conf settings</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
>user</TD
><TD
>Any valid user</TD
><TD
>none</TD
><TD
>The username used to connect to the servername.</TD
></TR
><TR
><TD
>password</TD
><TD
>Any</TD
><TD
>none</TD
><TD
>The password of the user at the servername.</TD
></TR
><TR
><TD
>server</TD
><TD
>Any <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>TDS 4.2</I
></SPAN
> entry in the freetds.conf file</TD
><TD
>none</TD
><TD
>The alias from the freetds.conf file representing the servername that will be connected to.</TD
></TR
><TR
><TD
>database</TD
><TD
>Any valid database</TD
><TD
>User's default database</TD
><TD
>The database on the servername to use.</TD
></TR
><TR
><TD
>port</TD
><TD
>Any TCP port</TD
><TD
>none</TD
><TD
>Port on which tdspool will listen.</TD
></TR
><TR
><TD
>min pool conn</TD
><TD
>1 or more</TD
><TD
>none</TD
><TD
>Minimum number of open connections to maintain to the servername.</TD
></TR
><TR
><TD
>max pool conn</TD
><TD
>1 or more</TD
><TD
>none</TD
><TD
>Maximum number of open connections to open against the servername.</TD
></TR
><TR
><TD
>max member age</TD
><TD
>0 (no limit) or a number of seconds</TD
><TD
>0</TD
><TD
>Maximum age of idle members before connection is closed.</TD
></TR
></TBODY
></TABLE
></DIV
></P
><P
>Now, let's put this into practice.
			<DIV
CLASS="EXAMPLE"
><A
NAME="E.G.POOL.CONF"
></A
><P
><B
>Example 5-8. pool.conf</B
></P
><PRE
CLASS="PROGRAMLISTING"
>	[global]
	min pool conn = 5
	max pool conn = 10
	max member age = 120
	
	[mypool]
	user = webuser
	password = secret
	database = ebiz
	server = fooserv
	max pool conn = 7
	port = 5000
	</PRE
></DIV
>
			The <TT
CLASS="LITERAL"
>[global]</TT
> section defines that we will open 5 connections against the server initially, and will increase up to 10 as demand requires.  These connections will be closed after being idle for 2 minutes (120 seconds), but only until there are 5 remaining open.</P
><P
>The <TT
CLASS="LITERAL"
>[mypool]</TT
> section defines a pool named <TT
CLASS="LITERAL"
>mypool</TT
> that will listen on port 5000.  It will login to a <SPAN
CLASS="PRODUCTNAME"
>SQL Server</SPAN
> named <TT
CLASS="LITERAL"
>fooserv</TT
> using the user <TT
CLASS="LITERAL"
>webuser</TT
> and the ever so clever password of <TT
CLASS="LITERAL"
>secret</TT
>.  Once logged in, the connections will use the database <TT
CLASS="LITERAL"
>ebiz</TT
> instead of webuser's default database.  Also, since this <SPAN
CLASS="PRODUCTNAME"
>SQL Server</SPAN
> has a limited number of <ACRONYM
CLASS="ACRONYM"
>CAL</ACRONYM
>s (Client Access Licenses), we are restricting the maximum number of connections to 7, which overrides the <TT
CLASS="LITERAL"
>global</TT
> setting of 10.</P
><P
>Run <B
CLASS="COMMAND"
>tdspool</B
> with the name of the pool you are serving.
<PRE
CLASS="SCREEN"
>	<SAMP
CLASS="PROMPT"
>$ </SAMP
><KBD
CLASS="USERINPUT"
> tdspool mypool</KBD
></PRE
></P
><P
>Before your clients connect to the pool, you must edit your <TT
CLASS="FILENAME"
>freetds.conf</TT
> to include the host and port of the pooling server, and point your clients at it.</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="appendmode.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="stunnel.htm"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Appending Dump Files</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="configs.htm"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>stunnel HOWTO</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>

${this.title}

Code Editor : tdspool.htm