DOCUMENT:Q189410 22-APR-2001 [iis] TITLE :HOWTO: Enable or Disable Connection Pooling in IIS 4.0 PRODUCT :Internet Information Server PROD/VER:WINNT:4.0 OPER/SYS: KEYWORDS:kbGrpDSASP ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server 4.0 ------------------------------------------------------------------------------- SUMMARY ======= ODBC connection pooling is enabled by default for ODBC drivers installed with Microsoft Option Pack 4.0. In Internet Information Server (IIS) 4.0 this setting is handled on a driver-by-driver basis. This article describes how to enable or disable this setting for any given ODBC driver. MORE INFORMATION ================ ODBC connection pooling is configured through a registry setting saved with the ODBC driver information. This can be found in the Windows registry at the following location: \HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI\ Where is the name of the ODBC driver in question. Connection pooling is configured by setting the STRING value CPTIMEOUT to a non-zero value. This value is the number of seconds a connection is held in the pool before being discarded. Setting CPTIMEOUT to 0 disables connection pooling. If the CPTIMEOUT value does not exist, connection pooling will be disabled for that driver. REFERENCES ========== For information on setting this value programmatically, see the following articles in the Microsoft Knowledge Base: Q164221 INF: How to Enable Connection Pooling in an ODBC Application Q166083 INF: How to Enable Connection Pooling in an OLE DB Application ====================================================================== Keywords : kbGrpDSASP Technology : kbiisSearch kbiis400 Version : WINNT:4.0 Issue type : kbhowto ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.